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Nanodevices

RESEARCH

DEPARTMENTS
Nanoelectronics engineering
RESEARCH GROUPS
SystemsEngineerings
nanodevices
spintronics
BTN_PME

DESCRIPTION

The nanodevices group develops integrated sensor solutions for the biomedical, food and environment areas, as well as industrial sensing applications. In the biomedical sensor area, magnetoresistive based protein or DNA chips, and magnetoresistive cytometers (technologies previously developed at INESC MN-Lisbon), are now being tested in different clinical applications. The bioanalyte is labelled with a magnetic nanoparticle or bead, through an intervenient antibody, aptamer, complementary DNA strand, and after recognition, the signal is read in the magnetoresistive sensor array. Label-free technologies are also being developed, using direct molecular fingerprinting of compounds and molecules using microfluidics, an optical detection, starting with discrete assembly of pre-existent modules (microfluidic reactor, light source, optical spectrometer) to the full integration of components at the wafer level in collaboration with partners. The group (together with the spintronics group) is actively involved on the prototyping of tunnel magnetoresistive based sensors for industrial applications.

RESEARCH PROJECTS

Project INVENNTA II (in collaboration with the neuroscience group of J Castillo, at IDIS-H Universitario de Santiago de Compostela)

Team: INL ( Elizabete Fernandes, P.P.Freitas)

           IDIS, T Sobrino, J Castillo

          Other collaborators:  S Cardoso, and T.Dias at INESC MN, under subcontract, supplying MR chip technology

project 1

Platforms, PCBs, and magnetoresistive chips, being used for the multiplexed detection of ischemic stroke patient biomarkers

Conference presentation: Fernandes E., Martins V., Dias T., Germano J., Sobrino T., Cardoso S., Castillo J., Rivas J., Freitas PP. Simultaneous interrogation of multiple targets using a magnetoresistive (MR) biochip platform. Biosensors 2016, Gothenburg, Sweden 25-27 May 2016

Project INVENNTA II (in collaboration with the oncology group of R. Lopez, at IDIS-H Universitario de Santiago de Compostela)

Team: INL ( Alexandre Chicharo, P.P.Freitas, L Dieguez, B.Espina, M.Martins, J.Piteira)

            IDIS, R Lopez

            Other collaborators: S Cardoso at INESC MN, supplying MR cytometer chips

Cell labelled with magnetic beads

Cell labelled with magnetic beads


MR cytometer PCB, with integrated microfluidics and sensors

MR cytometer PCB, with integrated microfluidics and sensors

Conference presentation: A. Chícharo, M. Martins, B. Espiña, S. Cardoso and P. Freitas, High-throughput magnetic flow cytometer for tumour cell quantification, 13th Joint MMM-Intermag Conference, January 11-15, 2016, San Diego, California, US.

Exploiting spin transfer based nano-oscillators and spin Hall devices. Inl hosts one PhD student ( Mohammad Tarequzzaman) and has hosted one post doctoral fellow ( Bertrand Lacoste) with joint co-advising from Ricardo Ferreira (Spintronics), and P.Freitas. (more details in the spintronics group site).

This project is based on a COFUND fellowship holder ( Hongyan Bi) and addresses the specific, accurate, and fast quantification through optical means of compounds within a complex matrix background.

Schematic illustration of the microfluidic sensor integrated with after-channel UV/vis spectrophotometric detection for food ingredient analysis. (b) Collected absorbance change at 266 nm of solutions containing only caffeine, and mixture of AA and caffeine before (A0) and after (A) passing through the enzyme-loaded microfluidic sensor at 5 μL/min. Arrows indicate the time when it is started to sample the solution through the microfluidic channel.

Schematic illustration of the microfluidic sensor integrated with after-channel UV/vis spectrophotometric detection for food ingredient analysis. (b) Collected absorbance change at 266 nm of solutions containing only caffeine, and mixture of AA and caffeine before (A0) and after (A) passing through the enzyme-loaded microfluidic sensor at 5 μL/min. Arrows indicate the time when it is started to sample the solution through the microfluidic channel.

Publication: H. Bi, A. C. Fernandes, S. Cardoso and P. Freitas, Interference-Blind Microfluidic Sensor for Ascorbic Acid Determination by UV/vis Spectroscopy. Sensors and Actuators B: Chemical, 2016, 224, 668-675.

Starting project in collaboration with the Systems Engineering group, and external partners, to develop a fully integrated microspectrometer using CMOS based or a-Si:H based photodiodes, thin film multilayer band pass filters, and LEDS, into a compact format suitable for integration with control and communication hardware for a portable solution.

This project is being developed within the PhD thesis of M.Costa ( NanoFab). The goal is to incorporate magnetoresistive sensors with typical features of 100nm on the tip of AFM cantilevers, providing direct field mapping through an AFM probe.

Resonance characterization of the cantilever with a resonance frequency of ∼250 kHz. (b) Voltage output versus the external applied magnetic field response of an individualSV sensor already integrated in an AFM cantilever.

Resonance characterization of the cantilever with a resonance frequency of ∼250 kHz. (b) Voltage output versus the external applied magnetic field response of an individualSV sensor already integrated in an AFM cantilever.

Publication: “Integration of magnetoresistive sensors with atomic force microscopy cantilevers for scanning magnetoresistance microscopy applications”, M. Costa, J. Gaspar, R. Ferreira, E. Paz, H. Fonseca, M. Martins, S. Cardoso, and P. P. Freitas, IEEE Trans. Magnetics, vol. 51, no. 11, pp. 6503104, Nov. 2015

PUBLICATIONS

55 entries « 1 of 2 »

2018

Yang, H F; Garcia-Sanchez, F; Hu, X K; Sievers, S; Böhnert, T; Costa, J D; Tarequzzaman, M; Ferreira, R; Bieler, M; Schumacher, H W

Excitation and coherent control of magnetization dynamics in magnetic tunnel junctions using acoustic pulses Journal Article

Applied Physics Letters, 113 (7), pp. 072403, 2018.

Links | BibTeX

Tarequzzaman, M; Jenkins, A S; Böhnert, T; Borme, J; Martins, L; E. Paz, Ferreira R; Freitas, P P

Broadband voltage rectifier induced by linear bias dependence in CoFeB/MgO magnetic tunnel junctions Journal Article

Applied Physics Letters, 112 (25), pp. 252401, 2018, (arXiv: 1804.04104).

Abstract | Links | BibTeX

Böhnert, T; Paz, E; Ferreira, R; Freitas, P P

Magnetic tunnel junction thermocouple for thermoelectric power harvesting Journal Article

Physics Letters A, 2018, ISSN: 0375-9601.

Links | BibTeX

Merazzo, K J; Costa, T; Franco, F; Ferreira, R; Zander, M; Türr, M; Becker, T; Freitas, P P; Cardoso, S

Reading magnetic ink patterns with magnetoresistive sensors Journal Article

AIP Advances, 8 (5), pp. 056633, 2018.

Links | BibTeX

Tarequzzaman, M; Böhnert, T; Decker, M; Costa, J D; Borme, J; Lacoste, B; Paz, E; Jenkins, A S; Serrano-Guisan, S; Back, C H; Ferreira, R; Freitas, P P

Magnetic oscillations Excited by Concurrent Spin Injection from a Tunneling Current and a Spin Hall Current Online

2018, visited: 10.04.2018, (arXiv: 1802.02224).

Abstract | Links | BibTeX

Tarequzzaman, M; Bohnert, T; Jenkins, A S; Borme, J; Paz, E; Ferreira, R; Freitas, P P

Influence of MgO Tunnel Barrier Thickness on the Output Power of Three-Terminal Spin Hall Nano-Oscillators Journal Article

IEEE Transactions on Magnetics, pp. 1–4, 2018.

Links | BibTeX

Ferreira, Ricardo; Paz, Elvira

Magnetoresistive sensor Patent

US20180180686A1, 2018.

Abstract | Links | BibTeX

2017

Silva, Ana V; Ferreira, Ricardo; Paz, Elvira; Leitao, Diana C; Devolder, Thibaut; Cardoso, Susana; Freitas, Paulo P

Thermal FMR Spectral Characterization of Very Low RA In-Plane MgO Magnetic Tunnel Junctions Journal Article

IEEE Transactions on Magnetics, 53 (11), pp. 1–5, 2017.

Links | BibTeX

Vidal, Enrique García; Muñoz, Diego Ramírez; Arias, Sergio Iván Ravelo; Moreno, Jaime Sánchez; Cardoso, Susana; Ferreira, Ricardo; Freitas, Paulo

Electronic Energy Meter Based on a Tunnel Magnetoresistive Effect (TMR) Current Sensor Journal Article

Materials, 10 (10), pp. 1134, 2017.

Links | BibTeX

Costa, J D; Serrano-Guisan, S; Lacoste, B; Jenkins, A S; Böhnert, T; Tarequzzaman, M; Borme, J; Deepak, F L; Paz, E; Ventura, J; Ferreira, R; Freitas, P P

High power and low critical current density spin transfer torque nano-oscillators using MgO barriers with intermediate thickness Journal Article

Scientific Reports, 7 (1), 2017.

Links | BibTeX

Böhnert, T; Serrano-Guisan, S; Paz, E; Lacoste, B; Ferreira, R; Freitas, P P

Magnetic tunnel junctions with integrated thermometers for magnetothermopower measurements Journal Article

Journal of Physics: Condensed Matter, 29 (18), pp. 185303, 2017.

Abstract | Links | BibTeX

Kuepferling, M; Garcia-Sanchez, F; Boehnert, T; Ferreira, R; Dutra, R; Sommer, R L; Pasquale, M

Influence of thermal gradients on the vortex dynamics in CoFeB MTJs Inproceedings

2017 IEEE International Magnetics Conference (INTERMAG), pp. 1-1, 2017.

Abstract | Links | BibTeX

Böhnert, Tim ; Dutra, Roberta ; Sommer, Rubem L; Paz, Elvira ; Serrano-Guisan, Santiago ; Ferreira, Ricardo ; Freitas, Paulo P

Influence of the thermal interface resistance on the thermovoltage of a magnetic tunnel junction Journal Article

Physical Review B, 95 , pp. 104441, 2017.

Links | BibTeX

Martins, L; Ventura, J; Ferreira, R; Freitas, P P

Optimization of the buffer surface of CoFeB/MgO/CoFeB-based magnetic tunnel junctions by ion beam milling Journal Article

Applied Surface Science, 424 , pp. 58 - 62, 2017, ISSN: 0169-4332, (7th International Conference on Advanced Nanomaterials, 2nd International Conference on Graphene Technology, 1st International Conference on Spintronics Materials).

Abstract | Links | BibTeX

Yang, H F; Hu, X K; Liebing, N; Böhnert, T; Costa, J D; Tarequzzaman, M; Ferreira, R; Sievers, S; Bieler, M; Schumacher, H W

Electrical measurement of absolute temperature and temperature transients in a buried nanostructure under ultrafast optical heating Journal Article

Applied Physics Letters, 110 (23), pp. 232403, 2017.

Links | BibTeX

2016

Bi, H; Fernandes, A C; Cardoso, S; Freitas, P P

Interference-blind microfluidic sensor for ascorbic acid determination by UV/vis spectroscopy Journal Article

Sensors and Actuactos B, Chemical, 224 , pp. 668, 2016.

BibTeX

Huisman, TJ; Mikhaylovskiy, RV; Costa, JD; Freimuth, F; Paz, E; Ventura, J; Freitas, PP; Blügel, S; Mokrousov, Y; Rasing, Th; Kimel, T

Femtosecond control of electric currents in metallic ferromagnetic heterostructures Journal Article

Nature Nanotechnology, 11 , pp. 455, 2016.

Links | BibTeX

Vieira NCS ; Borme, J ; Machado G ; Cerqueira F ; Freitas PP  ; Zucolotto V; Peres NMR ; Alpuim J.Phys P 

Graphene field-effect transistor array with integrated electrolytic gates scaled to 200 mm Journal Article

Cond Matter, 28 , 2016.

Links | BibTeX

Knudde, S; Farinha, G; Leitao, D C; Ferreira, R; Cardoso, S; Freitas, P P

AlOx barrier growth in magnetic tunnel junctions for sensor applications Journal Article

Journal of Magnetism and Magnetic Materials, 412 , pp. 181-184, 2016.

Links | BibTeX

Romera, M; Talatchian, P; Lebrun, R; Merazzo, K J; Bortolotti, P; Vila, L; Costa, J D; Ferreira, R; Freitas, P P; Cyrille, M C; Ebels, U; Cros, V; Grollier, J

Enhancing the injection locking range of spin torque oscillators through mutual coupling Journal Article

Applied Physics Letters, 109 (25), 2016.

Links | BibTeX

Paz, E; Ferreira, R; Freitas, P P

Linearization of Magnetic Sensors With a Weakly Pinned Free-Layer MTJ Stack Using a Three-Step Annealing Process Journal Article

IEEE Transactions on Magnetics, 52 (7), 2016.

Links | BibTeX

Freitas, P P; Ferreira, R; Cardoso, S

Spintronic Sensors Journal Article

Proceedings of the IEEE, 104 (10), pp. 1894-1918, 2016.

Links | BibTeX

2015

Arias, Ravelo S I; Muñoz, Ramírez D; Cardoso, S; Ferreira, R; Freitas, P

Note: A non-invasive electronic measurement technique to measure the embedded four resistive elements in a Wheatstone bridge sensor Journal Article

Review of Scientific Instruments, 86 (6), pp. 066109, 2015.

Links | BibTeX

Ravelo, A; Sergio, I; Ramirez, D; Cardoso, S; Ferreira, R; Freitas, P P

Total ionizing dose (TID) evaluation of magnetic tunnel junction (MTJ) current sensors Journal Article

Sensors and Actuators a-Physical, 225 (119-127), 2015.

BibTeX

Valadeiro, J; Amaral, J; Leitao, D C; Ferreira, R; Cardoso, S; Freitas, P P

Strategies for pTesla Field Detection Using Magnetoresistive Sensors With a Soft Pinned Sensing Layer Journal Article

IEEE Trans. Magn, 51 (1), pp. 4400204, 2015.

BibTeX

Sievers, S; Liebing, N; Serrano-Guisan, S; Ferreira, R; E. Paz, Caprile A; Manzin, A; Pasquale, M; Skowronski, W; Stobiecki, T; Rott, K; Reiss, G; Langer, J; Ocker, B; Schumacher, H W

Toward Wafer Scale Inductive Characterization of Spin-Transfer Torque Critical Current Density of Magnetic Tunnel Junction Stacks Journal Article

IEEE Trans. Magn, 51 (1), pp. 1400804, 2015.

Links | BibTeX

Caprile, A; Manzin, A; Coisson, M; Pasquale, M; Schumacher, H W; Liebing, N; Sievers, S; Ferreira, R; Serrano-Guisan, S; Paz, E

Static and Dynamic Analysis of Magnetic Tunnel Junctions With Wedged MgO Barrier Journal Article

IEEE Trans. Magn, 51 (1), pp. 4400304, 2015.

Links | BibTeX

V. Silvérioa S. Cardosob, Gaspard Paulo Freitas Moreiraa J P A L N

Design, fabrication and test of an integrated multi-microchannel heat sink for electronics cooling Journal Article

Sensors and Actuactors A, Physical, 235 (14), pp. 235, 2015.

BibTeX

Costa, JD ; Serrano-Guisan, S; Borme, J; Deepak, FL ; Tarequzzaman, M; Paz, E; Ventura, J; Ferreira, R; Freitas, PP

Impact of MgO Thickness on the Performance of Spin-Transfer Torque Nano-Oscillators Journal Article

IEEE Transactions on Magnetics , 51 (11), 2015.

Links | BibTeX

Costa, Margaret ; Gaspar, Joao ; Ferreira, Ricardo ; Paz, Elvira ; Fonseca, Helder ; Martins, Marco ; Cardoso, Susana ; Freitas, Paulo P

Integration of magnetoresistive sensors with atomic force microscopy cantilevers for scanning magnetoresistance microscopy applications Journal Article

IEEE Transactions on Magnetics, 51 , 2015.

BibTeX

A.V.Silva D.C.Leitao, J.Valadeiro J.Amaral P.P.Freitas Cardoso S

Linearization strategies for high sensitivity magnetoresistive sensors Journal Article

Eur. Phys. J. Appl. Phys., 72 , 2015.

BibTeX

D.Couto R. Sousa, Andrade Leander Lopez-Quintela J.Rivas P.P.Freitas M.Lima Porto B.Porto F.Carvalho Fernandes L M M A G E

Polyacrylic acid coated and non-coated iron-oxide nanoparticles are not genotoxic to human T-lymphocites Journal Article

Toxicology Letters, 234 (67), 2015.

BibTeX

Leitao, Diana C; Silva, Ana V; Paz, Elvira; Ferreira, Ricardo; Cardoso, Susana; Freitas, Paulo P

Magnetoresistive nanosensors: controlling magnetism at the nanoscale Journal Article

Nanotechnology, 27 (4), 2015.

BibTeX

2014

D. C. Leitao E. Paz, Silva Moskaltsova Knudde Deepak Ferreira Cardoso A A S F L R S; Freitas, P P

Nanoscale Magnetic Tunnel Junction Sensing Devices With Soft Pinned Sensing Layer and Low Aspect Ratio Journal Article

IEEE Trans. Magn, 50 (11), pp. 4410508, 2014.

Links | BibTeX

Cardoso, F A; Rosado, L S; Franco, F; Ferreira, R; Paz, E; Cardoso, S; Ramos, P M; Piedade, M; Freitas, P P

Improved Magnetic Tunnel Junctions Design for the Detection of Superficial Defects by Eddy Currents Testing Journal Article

IEEE Trans. Magn, 50 (11), pp. 6201304, 2014.

Links | BibTeX

X. Q. Bao R. Ferreira, Paz Leitao Silva Cardoso Freitas E D A S P P; F.Liu, L

Ordered arrays of tilted silicon nanobelts with enhanced solar hydrogen evolution performance Journal Article

Nanoscale, 6 , pp. 2097-2101, 2014.

BibTeX

Roldán, A; Roldán, J B; Reig, C; Cardoso, S; Cardoso, F; Ferreira, R; Freitas, P P

An in-depth noise model for giant magnetoresistance current sensors for circuit design and complementary metal–oxide–semiconductor integration Journal Article

Journal of Applied Physics, 115 (17), pp. 17E514, 2014.

Links | BibTeX

Cardoso, S; Leitao, D C; Gameiro, L; Cardoso, F; Ferreira, R; Paz, E; Freitas, P P

Magnetic tunnel junction sensors with pTesla sensitivity Journal Article

Microsyst. Technol., 20 , pp. 793-802, 2014.

BibTeX

Z. Hou A. Silva, Leitao Ferreira Cardoso D C R S; Freitas, P P

Micromagnetic and magneto-transport simulations of nanodevices based on MgO tunnel junctions for memory and sensing applications Journal Article

Physica B: Condensed Matter, 435 , pp. 163-167, 2014.

Links | BibTeX

Guo, D W; Cardoso, F A; Ferreira, R; Paz, E; Cardoso, S; Freitas, P P

MgO-based magnetic tunnel junction sensors array for non-destructive testing applications Journal Article

J. Appl. Phys., 115 , pp. 17E513, 2014.

Links | BibTeX

F. A. Cardoso L. Rosado, Ferreira Paz Cardoso Ramos Piedade R E S P M M; Freitas, P P

Magnetic tunnel junction based eddy current testing probe for detection of surface defects Journal Article

J. Appl. Phys., 115 (17), pp. 15E16, 2014.

Links | BibTeX

D. C. Leitao A. Silva, Ferreira Paz Deepack Cardoso R E F L S; Freitas, P P

Linear nanometric tunnel junction sensors with exchange pinned sensing layer Journal Article

J. App. Phys., 115 (17), pp. 17E526, 2014.

Links | BibTeX

2013

E. Paz S. Serrano-Guisan, Ferreira R; Freitas, P P

Room temperature direct detection of low frequency magnetic fields in the 100 pT/Hz(0.5) range using large arrays of magnetic tunnel junctions Journal Article

J. App. Phys., 115 (17), pp. 17E501, 2013.

Links | BibTeX

A. Silva D. Leitao, Huo Macedo Ferreira Paz Deepak Cardoso Z R R E F L S; Freitas, P P

Switching Field Variation in MgO Magnetic Tunnel Junction Nanopillars: Experimental Results and Micromagnetic Simulations Journal Article

IEEE Trans. Magn, 49 (7), pp. 4405-4408, 2013.

BibTeX

A. Lopes S. Cardoso, Ferreira Paz Deepak Sanchez Ramirez Ravelo R E F L J D S; Freitas, P P

MgO Magnetic Tunnel Junction Electrical Current Sensor With Integrated Ru Thermal Sensor Journal Article

IEEE Trans. Magn, 49 (7), pp. 3866-3869, 2013.

Links | BibTeX

J. Amaral V. Pinto, Costa Gaspar Ferreira Paz Cardoso T J R E S; Freitas, P P

Integration of TMR Sensors in Silicon Microneedles for Magnetic Measurements of Neurons Journal Article

IEEE Trans. Magn, 49 (7), pp. 3515-3515, 2013.

Links | BibTeX

Cardoso, S; Gameiro, L; Leitao, D C; Cardoso, F; Ferreira, R; Paz, E; Freitas, P P; Schmid, U; Aldavero, J; LeesterSchaede, M

Magnetic tunnel junction sensors with pTesla sensitivity for biomedical imaging Journal Article

Smart Sensors, Actuators, and Mems, pp. 8763, 2013.

Links | BibTeX

F. Delgado K. Lopez, Ferreira R; Fernández-Rossier, J

Intrinsic Spin Noise in MgO Magnetic Tunnel Junctions Journal Article

Appl. Phys. Lett. , 102 (63102), 2013.

Links | BibTeX

Liebing, Niklas; Serrano-Guisan, Santiago; Krzysteczko, Patryk; Rott, Karsten; "u, G; "u, J; Ocker, Berthold; Schumacher, Hans Werner

Tunneling magneto thermocurrent in CoFeB/MgO/CoFeB based magnetic tunnel junctions Journal Article

Applied Physics Letters, 102 (24), pp. 242413, 2013.

Links | BibTeX

2012

Arias, S; Munoz, D; Moreno, J; Cardoso, S; Ferreira, R; Freitas, P P

Fractional Modeling of the AC Large-Signal Frequency Response in Magnetoresistive Current Sensors Journal Article

Sensors, 13 (12), pp. 17516-17533, 2012.

Links | BibTeX

55 entries « 1 of 2 »

GROUP LEADER

paulo_freitas_web

THE TEAM

Elisabete Fernandes
Staff researcher

Hugo Oliveira
Staff researcher

Peng Weng Kung
Group Leader

Chun-Da Liao
Research Fellow

Filipe Alves
Research Fellow

Denis Santos
Research Fellow

Cosimo Spagnolo
Research Engineer

Mohamed Belmoubarik
Research Engineer

Carla Carvalho
Research Fellow

Magdalena Lepicka
Research Fellow

Milan Obradovic
Research Fellow

Purushottam Joshi
Research Fellow

Andrea Cruz
Research Fellow

Miguel Amaral
Master student (U Porto)

DESCRIPTION

The nanodevices group develops integrated sensor solutions for the biomedical, food and environment areas, as well as industrial sensing applications. In the biomedical sensor area, magnetoresistive based protein or DNA chips, and magnetoresistive cytometers (technologies previously developed at INESC MN-Lisbon), are now being tested in different clinical applications. The bioanalyte is labelled with a magnetic nanoparticle or bead, through an intervenient antibody, aptamer, complementary DNA strand, and after recognition, the signal is read in the magnetoresistive sensor array. Label-free technologies are also being developed, using direct molecular fingerprinting of compounds and molecules using microfluidics, an optical detection, starting with discrete assembly of pre-existent modules (microfluidic reactor, light source, optical spectrometer) to the full integration of components at the wafer level in collaboration with partners. The group (together with the spintronics group) is actively involved on the prototyping of tunnel magnetoresistive based sensors for industrial applications.

RESEARCH PROJECTS

Project INVENNTA II (in collaboration with the neuroscience group of J Castillo, at IDIS-H Universitario de Santiago de Compostela)

Team: INL ( Elizabete Fernandes, P.P.Freitas)

           IDIS, T Sobrino, J Castillo

          Other collaborators:  S Cardoso, and T.Dias at INESC MN, under subcontract, supplying MR chip technology

project 1

Platforms, PCBs, and magnetoresistive chips, being used for the multiplexed detection of ischemic stroke patient biomarkers

Conference presentation: Fernandes E., Martins V., Dias T., Germano J., Sobrino T., Cardoso S., Castillo J., Rivas J., Freitas PP. Simultaneous interrogation of multiple targets using a magnetoresistive (MR) biochip platform. Biosensors 2016, Gothenburg, Sweden 25-27 May 2016

Project INVENNTA II (in collaboration with the oncology group of R. Lopez, at IDIS-H Universitario de Santiago de Compostela)

Team: INL ( Alexandre Chicharo, P.P.Freitas, L Dieguez, B.Espina, M.Martins, J.Piteira)

            IDIS, R Lopez

            Other collaborators: S Cardoso at INESC MN, supplying MR cytometer chips

Cell labelled with magnetic beads

Cell labelled with magnetic beads


MR cytometer PCB, with integrated microfluidics and sensors

MR cytometer PCB, with integrated microfluidics and sensors

Conference presentation: A. Chícharo, M. Martins, B. Espiña, S. Cardoso and P. Freitas, High-throughput magnetic flow cytometer for tumour cell quantification, 13th Joint MMM-Intermag Conference, January 11-15, 2016, San Diego, California, US.

Exploiting spin transfer based nano-oscillators and spin Hall devices. Inl hosts one PhD student ( Mohammad Tarequzzaman) and has hosted one post doctoral fellow ( Bertrand Lacoste) with joint co-advising from Ricardo Ferreira (Spintronics), and P.Freitas. (more details in the spintronics group site).

This project is based on a COFUND fellowship holder ( Hongyan Bi) and addresses the specific, accurate, and fast quantification through optical means of compounds within a complex matrix background.

Schematic illustration of the microfluidic sensor integrated with after-channel UV/vis spectrophotometric detection for food ingredient analysis. (b) Collected absorbance change at 266 nm of solutions containing only caffeine, and mixture of AA and caffeine before (A0) and after (A) passing through the enzyme-loaded microfluidic sensor at 5 μL/min. Arrows indicate the time when it is started to sample the solution through the microfluidic channel.

Schematic illustration of the microfluidic sensor integrated with after-channel UV/vis spectrophotometric detection for food ingredient analysis. (b) Collected absorbance change at 266 nm of solutions containing only caffeine, and mixture of AA and caffeine before (A0) and after (A) passing through the enzyme-loaded microfluidic sensor at 5 μL/min. Arrows indicate the time when it is started to sample the solution through the microfluidic channel.

Publication: H. Bi, A. C. Fernandes, S. Cardoso and P. Freitas, Interference-Blind Microfluidic Sensor for Ascorbic Acid Determination by UV/vis Spectroscopy. Sensors and Actuators B: Chemical, 2016, 224, 668-675.

Starting project in collaboration with the Systems Engineering group, and external partners, to develop a fully integrated microspectrometer using CMOS based or a-Si:H based photodiodes, thin film multilayer band pass filters, and LEDS, into a compact format suitable for integration with control and communication hardware for a portable solution.

This project is being developed within the PhD thesis of M.Costa ( NanoFab). The goal is to incorporate magnetoresistive sensors with typical features of 100nm on the tip of AFM cantilevers, providing direct field mapping through an AFM probe.

Resonance characterization of the cantilever with a resonance frequency of ∼250 kHz. (b) Voltage output versus the external applied magnetic field response of an individualSV sensor already integrated in an AFM cantilever.

Resonance characterization of the cantilever with a resonance frequency of ∼250 kHz. (b) Voltage output versus the external applied magnetic field response of an individualSV sensor already integrated in an AFM cantilever.

Publication: “Integration of magnetoresistive sensors with atomic force microscopy cantilevers for scanning magnetoresistance microscopy applications”, M. Costa, J. Gaspar, R. Ferreira, E. Paz, H. Fonseca, M. Martins, S. Cardoso, and P. P. Freitas, IEEE Trans. Magnetics, vol. 51, no. 11, pp. 6503104, Nov. 2015

PUBLICATIONS

55 entries « 1 of 2 »

2018

Yang, H F; Garcia-Sanchez, F; Hu, X K; Sievers, S; Böhnert, T; Costa, J D; Tarequzzaman, M; Ferreira, R; Bieler, M; Schumacher, H W

Excitation and coherent control of magnetization dynamics in magnetic tunnel junctions using acoustic pulses Journal Article

Applied Physics Letters, 113 (7), pp. 072403, 2018.

Links | BibTeX

Tarequzzaman, M; Jenkins, A S; Böhnert, T; Borme, J; Martins, L; E. Paz, Ferreira R; Freitas, P P

Broadband voltage rectifier induced by linear bias dependence in CoFeB/MgO magnetic tunnel junctions Journal Article

Applied Physics Letters, 112 (25), pp. 252401, 2018, (arXiv: 1804.04104).

Abstract | Links | BibTeX

Böhnert, T; Paz, E; Ferreira, R; Freitas, P P

Magnetic tunnel junction thermocouple for thermoelectric power harvesting Journal Article

Physics Letters A, 2018, ISSN: 0375-9601.

Links | BibTeX

Merazzo, K J; Costa, T; Franco, F; Ferreira, R; Zander, M; Türr, M; Becker, T; Freitas, P P; Cardoso, S

Reading magnetic ink patterns with magnetoresistive sensors Journal Article

AIP Advances, 8 (5), pp. 056633, 2018.

Links | BibTeX

Tarequzzaman, M; Böhnert, T; Decker, M; Costa, J D; Borme, J; Lacoste, B; Paz, E; Jenkins, A S; Serrano-Guisan, S; Back, C H; Ferreira, R; Freitas, P P

Magnetic oscillations Excited by Concurrent Spin Injection from a Tunneling Current and a Spin Hall Current Online

2018, visited: 10.04.2018, (arXiv: 1802.02224).

Abstract | Links | BibTeX

Tarequzzaman, M; Bohnert, T; Jenkins, A S; Borme, J; Paz, E; Ferreira, R; Freitas, P P

Influence of MgO Tunnel Barrier Thickness on the Output Power of Three-Terminal Spin Hall Nano-Oscillators Journal Article

IEEE Transactions on Magnetics, pp. 1–4, 2018.

Links | BibTeX

Ferreira, Ricardo; Paz, Elvira

Magnetoresistive sensor Patent

US20180180686A1, 2018.

Abstract | Links | BibTeX

2017

Silva, Ana V; Ferreira, Ricardo; Paz, Elvira; Leitao, Diana C; Devolder, Thibaut; Cardoso, Susana; Freitas, Paulo P

Thermal FMR Spectral Characterization of Very Low RA In-Plane MgO Magnetic Tunnel Junctions Journal Article

IEEE Transactions on Magnetics, 53 (11), pp. 1–5, 2017.

Links | BibTeX

Vidal, Enrique García; Muñoz, Diego Ramírez; Arias, Sergio Iván Ravelo; Moreno, Jaime Sánchez; Cardoso, Susana; Ferreira, Ricardo; Freitas, Paulo

Electronic Energy Meter Based on a Tunnel Magnetoresistive Effect (TMR) Current Sensor Journal Article

Materials, 10 (10), pp. 1134, 2017.

Links | BibTeX

Costa, J D; Serrano-Guisan, S; Lacoste, B; Jenkins, A S; Böhnert, T; Tarequzzaman, M; Borme, J; Deepak, F L; Paz, E; Ventura, J; Ferreira, R; Freitas, P P

High power and low critical current density spin transfer torque nano-oscillators using MgO barriers with intermediate thickness Journal Article

Scientific Reports, 7 (1), 2017.

Links | BibTeX

Böhnert, T; Serrano-Guisan, S; Paz, E; Lacoste, B; Ferreira, R; Freitas, P P

Magnetic tunnel junctions with integrated thermometers for magnetothermopower measurements Journal Article

Journal of Physics: Condensed Matter, 29 (18), pp. 185303, 2017.

Abstract | Links | BibTeX

Kuepferling, M; Garcia-Sanchez, F; Boehnert, T; Ferreira, R; Dutra, R; Sommer, R L; Pasquale, M

Influence of thermal gradients on the vortex dynamics in CoFeB MTJs Inproceedings

2017 IEEE International Magnetics Conference (INTERMAG), pp. 1-1, 2017.

Abstract | Links | BibTeX

Böhnert, Tim ; Dutra, Roberta ; Sommer, Rubem L; Paz, Elvira ; Serrano-Guisan, Santiago ; Ferreira, Ricardo ; Freitas, Paulo P

Influence of the thermal interface resistance on the thermovoltage of a magnetic tunnel junction Journal Article

Physical Review B, 95 , pp. 104441, 2017.

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Martins, L; Ventura, J; Ferreira, R; Freitas, P P

Optimization of the buffer surface of CoFeB/MgO/CoFeB-based magnetic tunnel junctions by ion beam milling Journal Article

Applied Surface Science, 424 , pp. 58 - 62, 2017, ISSN: 0169-4332, (7th International Conference on Advanced Nanomaterials, 2nd International Conference on Graphene Technology, 1st International Conference on Spintronics Materials).

Abstract | Links | BibTeX

Yang, H F; Hu, X K; Liebing, N; Böhnert, T; Costa, J D; Tarequzzaman, M; Ferreira, R; Sievers, S; Bieler, M; Schumacher, H W

Electrical measurement of absolute temperature and temperature transients in a buried nanostructure under ultrafast optical heating Journal Article

Applied Physics Letters, 110 (23), pp. 232403, 2017.

Links | BibTeX

2016

Bi, H; Fernandes, A C; Cardoso, S; Freitas, P P

Interference-blind microfluidic sensor for ascorbic acid determination by UV/vis spectroscopy Journal Article

Sensors and Actuactos B, Chemical, 224 , pp. 668, 2016.

BibTeX

Huisman, TJ; Mikhaylovskiy, RV; Costa, JD; Freimuth, F; Paz, E; Ventura, J; Freitas, PP; Blügel, S; Mokrousov, Y; Rasing, Th; Kimel, T

Femtosecond control of electric currents in metallic ferromagnetic heterostructures Journal Article

Nature Nanotechnology, 11 , pp. 455, 2016.

Links | BibTeX

Vieira NCS ; Borme, J ; Machado G ; Cerqueira F ; Freitas PP  ; Zucolotto V; Peres NMR ; Alpuim J.Phys P 

Graphene field-effect transistor array with integrated electrolytic gates scaled to 200 mm Journal Article

Cond Matter, 28 , 2016.

Links | BibTeX

Knudde, S; Farinha, G; Leitao, D C; Ferreira, R; Cardoso, S; Freitas, P P

AlOx barrier growth in magnetic tunnel junctions for sensor applications Journal Article

Journal of Magnetism and Magnetic Materials, 412 , pp. 181-184, 2016.

Links | BibTeX

Romera, M; Talatchian, P; Lebrun, R; Merazzo, K J; Bortolotti, P; Vila, L; Costa, J D; Ferreira, R; Freitas, P P; Cyrille, M C; Ebels, U; Cros, V; Grollier, J

Enhancing the injection locking range of spin torque oscillators through mutual coupling Journal Article

Applied Physics Letters, 109 (25), 2016.

Links | BibTeX

Paz, E; Ferreira, R; Freitas, P P

Linearization of Magnetic Sensors With a Weakly Pinned Free-Layer MTJ Stack Using a Three-Step Annealing Process Journal Article

IEEE Transactions on Magnetics, 52 (7), 2016.

Links | BibTeX

Freitas, P P; Ferreira, R; Cardoso, S

Spintronic Sensors Journal Article

Proceedings of the IEEE, 104 (10), pp. 1894-1918, 2016.

Links | BibTeX

2015

Arias, Ravelo S I; Muñoz, Ramírez D; Cardoso, S; Ferreira, R; Freitas, P

Note: A non-invasive electronic measurement technique to measure the embedded four resistive elements in a Wheatstone bridge sensor Journal Article

Review of Scientific Instruments, 86 (6), pp. 066109, 2015.

Links | BibTeX

Ravelo, A; Sergio, I; Ramirez, D; Cardoso, S; Ferreira, R; Freitas, P P

Total ionizing dose (TID) evaluation of magnetic tunnel junction (MTJ) current sensors Journal Article

Sensors and Actuators a-Physical, 225 (119-127), 2015.

BibTeX

Valadeiro, J; Amaral, J; Leitao, D C; Ferreira, R; Cardoso, S; Freitas, P P

Strategies for pTesla Field Detection Using Magnetoresistive Sensors With a Soft Pinned Sensing Layer Journal Article

IEEE Trans. Magn, 51 (1), pp. 4400204, 2015.

BibTeX

Sievers, S; Liebing, N; Serrano-Guisan, S; Ferreira, R; E. Paz, Caprile A; Manzin, A; Pasquale, M; Skowronski, W; Stobiecki, T; Rott, K; Reiss, G; Langer, J; Ocker, B; Schumacher, H W

Toward Wafer Scale Inductive Characterization of Spin-Transfer Torque Critical Current Density of Magnetic Tunnel Junction Stacks Journal Article

IEEE Trans. Magn, 51 (1), pp. 1400804, 2015.

Links | BibTeX

Caprile, A; Manzin, A; Coisson, M; Pasquale, M; Schumacher, H W; Liebing, N; Sievers, S; Ferreira, R; Serrano-Guisan, S; Paz, E

Static and Dynamic Analysis of Magnetic Tunnel Junctions With Wedged MgO Barrier Journal Article

IEEE Trans. Magn, 51 (1), pp. 4400304, 2015.

Links | BibTeX

V. Silvérioa S. Cardosob, Gaspard Paulo Freitas Moreiraa J P A L N

Design, fabrication and test of an integrated multi-microchannel heat sink for electronics cooling Journal Article

Sensors and Actuactors A, Physical, 235 (14), pp. 235, 2015.

BibTeX

Costa, JD ; Serrano-Guisan, S; Borme, J; Deepak, FL ; Tarequzzaman, M; Paz, E; Ventura, J; Ferreira, R; Freitas, PP

Impact of MgO Thickness on the Performance of Spin-Transfer Torque Nano-Oscillators Journal Article

IEEE Transactions on Magnetics , 51 (11), 2015.

Links | BibTeX

Costa, Margaret ; Gaspar, Joao ; Ferreira, Ricardo ; Paz, Elvira ; Fonseca, Helder ; Martins, Marco ; Cardoso, Susana ; Freitas, Paulo P

Integration of magnetoresistive sensors with atomic force microscopy cantilevers for scanning magnetoresistance microscopy applications Journal Article

IEEE Transactions on Magnetics, 51 , 2015.

BibTeX

A.V.Silva D.C.Leitao, J.Valadeiro J.Amaral P.P.Freitas Cardoso S

Linearization strategies for high sensitivity magnetoresistive sensors Journal Article

Eur. Phys. J. Appl. Phys., 72 , 2015.

BibTeX

D.Couto R. Sousa, Andrade Leander Lopez-Quintela J.Rivas P.P.Freitas M.Lima Porto B.Porto F.Carvalho Fernandes L M M A G E

Polyacrylic acid coated and non-coated iron-oxide nanoparticles are not genotoxic to human T-lymphocites Journal Article

Toxicology Letters, 234 (67), 2015.

BibTeX

Leitao, Diana C; Silva, Ana V; Paz, Elvira; Ferreira, Ricardo; Cardoso, Susana; Freitas, Paulo P

Magnetoresistive nanosensors: controlling magnetism at the nanoscale Journal Article

Nanotechnology, 27 (4), 2015.

BibTeX

2014

D. C. Leitao E. Paz, Silva Moskaltsova Knudde Deepak Ferreira Cardoso A A S F L R S; Freitas, P P

Nanoscale Magnetic Tunnel Junction Sensing Devices With Soft Pinned Sensing Layer and Low Aspect Ratio Journal Article

IEEE Trans. Magn, 50 (11), pp. 4410508, 2014.

Links | BibTeX

Cardoso, F A; Rosado, L S; Franco, F; Ferreira, R; Paz, E; Cardoso, S; Ramos, P M; Piedade, M; Freitas, P P

Improved Magnetic Tunnel Junctions Design for the Detection of Superficial Defects by Eddy Currents Testing Journal Article

IEEE Trans. Magn, 50 (11), pp. 6201304, 2014.

Links | BibTeX

X. Q. Bao R. Ferreira, Paz Leitao Silva Cardoso Freitas E D A S P P; F.Liu, L

Ordered arrays of tilted silicon nanobelts with enhanced solar hydrogen evolution performance Journal Article

Nanoscale, 6 , pp. 2097-2101, 2014.

BibTeX

Roldán, A; Roldán, J B; Reig, C; Cardoso, S; Cardoso, F; Ferreira, R; Freitas, P P

An in-depth noise model for giant magnetoresistance current sensors for circuit design and complementary metal–oxide–semiconductor integration Journal Article

Journal of Applied Physics, 115 (17), pp. 17E514, 2014.

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Cardoso, S; Leitao, D C; Gameiro, L; Cardoso, F; Ferreira, R; Paz, E; Freitas, P P

Magnetic tunnel junction sensors with pTesla sensitivity Journal Article

Microsyst. Technol., 20 , pp. 793-802, 2014.

BibTeX

Z. Hou A. Silva, Leitao Ferreira Cardoso D C R S; Freitas, P P

Micromagnetic and magneto-transport simulations of nanodevices based on MgO tunnel junctions for memory and sensing applications Journal Article

Physica B: Condensed Matter, 435 , pp. 163-167, 2014.

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Guo, D W; Cardoso, F A; Ferreira, R; Paz, E; Cardoso, S; Freitas, P P

MgO-based magnetic tunnel junction sensors array for non-destructive testing applications Journal Article

J. Appl. Phys., 115 , pp. 17E513, 2014.

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F. A. Cardoso L. Rosado, Ferreira Paz Cardoso Ramos Piedade R E S P M M; Freitas, P P

Magnetic tunnel junction based eddy current testing probe for detection of surface defects Journal Article

J. Appl. Phys., 115 (17), pp. 15E16, 2014.

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D. C. Leitao A. Silva, Ferreira Paz Deepack Cardoso R E F L S; Freitas, P P

Linear nanometric tunnel junction sensors with exchange pinned sensing layer Journal Article

J. App. Phys., 115 (17), pp. 17E526, 2014.

Links | BibTeX

2013

E. Paz S. Serrano-Guisan, Ferreira R; Freitas, P P

Room temperature direct detection of low frequency magnetic fields in the 100 pT/Hz(0.5) range using large arrays of magnetic tunnel junctions Journal Article

J. App. Phys., 115 (17), pp. 17E501, 2013.

Links | BibTeX

A. Silva D. Leitao, Huo Macedo Ferreira Paz Deepak Cardoso Z R R E F L S; Freitas, P P

Switching Field Variation in MgO Magnetic Tunnel Junction Nanopillars: Experimental Results and Micromagnetic Simulations Journal Article

IEEE Trans. Magn, 49 (7), pp. 4405-4408, 2013.

BibTeX

A. Lopes S. Cardoso, Ferreira Paz Deepak Sanchez Ramirez Ravelo R E F L J D S; Freitas, P P

MgO Magnetic Tunnel Junction Electrical Current Sensor With Integrated Ru Thermal Sensor Journal Article

IEEE Trans. Magn, 49 (7), pp. 3866-3869, 2013.

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J. Amaral V. Pinto, Costa Gaspar Ferreira Paz Cardoso T J R E S; Freitas, P P

Integration of TMR Sensors in Silicon Microneedles for Magnetic Measurements of Neurons Journal Article

IEEE Trans. Magn, 49 (7), pp. 3515-3515, 2013.

Links | BibTeX

Cardoso, S; Gameiro, L; Leitao, D C; Cardoso, F; Ferreira, R; Paz, E; Freitas, P P; Schmid, U; Aldavero, J; LeesterSchaede, M

Magnetic tunnel junction sensors with pTesla sensitivity for biomedical imaging Journal Article

Smart Sensors, Actuators, and Mems, pp. 8763, 2013.

Links | BibTeX

F. Delgado K. Lopez, Ferreira R; Fernández-Rossier, J

Intrinsic Spin Noise in MgO Magnetic Tunnel Junctions Journal Article

Appl. Phys. Lett. , 102 (63102), 2013.

Links | BibTeX

Liebing, Niklas; Serrano-Guisan, Santiago; Krzysteczko, Patryk; Rott, Karsten; "u, G; "u, J; Ocker, Berthold; Schumacher, Hans Werner

Tunneling magneto thermocurrent in CoFeB/MgO/CoFeB based magnetic tunnel junctions Journal Article

Applied Physics Letters, 102 (24), pp. 242413, 2013.

Links | BibTeX

2012

Arias, S; Munoz, D; Moreno, J; Cardoso, S; Ferreira, R; Freitas, P P

Fractional Modeling of the AC Large-Signal Frequency Response in Magnetoresistive Current Sensors Journal Article

Sensors, 13 (12), pp. 17516-17533, 2012.

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55 entries « 1 of 2 »

GROUP LEADER

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THE TEAM

Elisabete Fernandes
Staff researcher

Hugo Oliveira
Staff researcher

Alexandre Chicharo
PhD student (IST)

Miguel Amaral
Master student (U Porto)

RESEARCH

Nanoelectronics engineering
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