Nanodevices
DEPARTMENTS
RESEARCH GROUPS
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
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
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.
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.
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
2018 |
Excitation and coherent control of magnetization dynamics in magnetic tunnel junctions using acoustic pulses Journal Article Applied Physics Letters, 113 (7), pp. 072403, 2018. |
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). |
Magnetic tunnel junction thermocouple for thermoelectric power harvesting Journal Article Physics Letters A, 2018, ISSN: 0375-9601. |
Reading magnetic ink patterns with magnetoresistive sensors Journal Article AIP Advances, 8 (5), pp. 056633, 2018. |
2018, visited: 10.04.2018, (arXiv: 1802.02224). |
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. |
Magnetoresistive sensor Patent US20180180686A1, 2018. |
2017 |
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. |
Electronic Energy Meter Based on a Tunnel Magnetoresistive Effect (TMR) Current Sensor Journal Article Materials, 10 (10), pp. 1134, 2017. |
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. |
Magnetic tunnel junctions with integrated thermometers for magnetothermopower measurements Journal Article Journal of Physics: Condensed Matter, 29 (18), pp. 185303, 2017. |
Influence of thermal gradients on the vortex dynamics in CoFeB MTJs Inproceedings 2017 IEEE International Magnetics Conference (INTERMAG), pp. 1-1, 2017. |
Influence of the thermal interface resistance on the thermovoltage of a magnetic tunnel junction Journal Article Physical Review B, 95 , pp. 104441, 2017. |
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). |
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. |
2016 |
Interference-blind microfluidic sensor for ascorbic acid determination by UV/vis spectroscopy Journal Article Sensors and Actuactos B, Chemical, 224 , pp. 668, 2016. |
Femtosecond control of electric currents in metallic ferromagnetic heterostructures Journal Article Nature Nanotechnology, 11 , pp. 455, 2016. |
Graphene field-effect transistor array with integrated electrolytic gates scaled to 200 mm Journal Article Cond Matter, 28 , 2016. |
AlOx barrier growth in magnetic tunnel junctions for sensor applications Journal Article Journal of Magnetism and Magnetic Materials, 412 , pp. 181-184, 2016. |
Enhancing the injection locking range of spin torque oscillators through mutual coupling Journal Article Applied Physics Letters, 109 (25), 2016. |
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. |
Spintronic Sensors Journal Article Proceedings of the IEEE, 104 (10), pp. 1894-1918, 2016. |
2015 |
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. |
Total ionizing dose (TID) evaluation of magnetic tunnel junction (MTJ) current sensors Journal Article Sensors and Actuators a-Physical, 225 (119-127), 2015. |
Strategies for pTesla Field Detection Using Magnetoresistive Sensors With a Soft Pinned Sensing Layer Journal Article IEEE Trans. Magn, 51 (1), pp. 4400204, 2015. |
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. |
Static and Dynamic Analysis of Magnetic Tunnel Junctions With Wedged MgO Barrier Journal Article IEEE Trans. Magn, 51 (1), pp. 4400304, 2015. |
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. |
Impact of MgO Thickness on the Performance of Spin-Transfer Torque Nano-Oscillators Journal Article IEEE Transactions on Magnetics , 51 (11), 2015. |
Integration of magnetoresistive sensors with atomic force microscopy cantilevers for scanning magnetoresistance microscopy applications Journal Article IEEE Transactions on Magnetics, 51 , 2015. |
Linearization strategies for high sensitivity magnetoresistive sensors Journal Article Eur. Phys. J. Appl. Phys., 72 , 2015. |
Polyacrylic acid coated and non-coated iron-oxide nanoparticles are not genotoxic to human T-lymphocites Journal Article Toxicology Letters, 234 (67), 2015. |
Magnetoresistive nanosensors: controlling magnetism at the nanoscale Journal Article Nanotechnology, 27 (4), 2015. |
2014 |
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. |
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. |
Ordered arrays of tilted silicon nanobelts with enhanced solar hydrogen evolution performance Journal Article Nanoscale, 6 , pp. 2097-2101, 2014. |
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. |
Magnetic tunnel junction sensors with pTesla sensitivity Journal Article Microsyst. Technol., 20 , pp. 793-802, 2014. |
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. |
MgO-based magnetic tunnel junction sensors array for non-destructive testing applications Journal Article J. Appl. Phys., 115 , pp. 17E513, 2014. |
Magnetic tunnel junction based eddy current testing probe for detection of surface defects Journal Article J. Appl. Phys., 115 (17), pp. 15E16, 2014. |
Linear nanometric tunnel junction sensors with exchange pinned sensing layer Journal Article J. App. Phys., 115 (17), pp. 17E526, 2014. |
2013 |
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. |
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. |
MgO Magnetic Tunnel Junction Electrical Current Sensor With Integrated Ru Thermal Sensor Journal Article IEEE Trans. Magn, 49 (7), pp. 3866-3869, 2013. |
Integration of TMR Sensors in Silicon Microneedles for Magnetic Measurements of Neurons Journal Article IEEE Trans. Magn, 49 (7), pp. 3515-3515, 2013. |
Magnetic tunnel junction sensors with pTesla sensitivity for biomedical imaging Journal Article Smart Sensors, Actuators, and Mems, pp. 8763, 2013. |
Intrinsic Spin Noise in MgO Magnetic Tunnel Junctions Journal Article Appl. Phys. Lett. , 102 (63102), 2013. |
Tunneling magneto thermocurrent in CoFeB/MgO/CoFeB based magnetic tunnel junctions Journal Article Applied Physics Letters, 102 (24), pp. 242413, 2013. |
2012 |
Fractional Modeling of the AC Large-Signal Frequency Response in Magnetoresistive Current Sensors Journal Article Sensors, 13 (12), pp. 17516-17533, 2012. |
GROUP LEADER
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
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
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.
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.
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
2018 |
Excitation and coherent control of magnetization dynamics in magnetic tunnel junctions using acoustic pulses Journal Article Applied Physics Letters, 113 (7), pp. 072403, 2018. |
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). |
Magnetic tunnel junction thermocouple for thermoelectric power harvesting Journal Article Physics Letters A, 2018, ISSN: 0375-9601. |
Reading magnetic ink patterns with magnetoresistive sensors Journal Article AIP Advances, 8 (5), pp. 056633, 2018. |
2018, visited: 10.04.2018, (arXiv: 1802.02224). |
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. |
Magnetoresistive sensor Patent US20180180686A1, 2018. |
2017 |
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. |
Electronic Energy Meter Based on a Tunnel Magnetoresistive Effect (TMR) Current Sensor Journal Article Materials, 10 (10), pp. 1134, 2017. |
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. |
Magnetic tunnel junctions with integrated thermometers for magnetothermopower measurements Journal Article Journal of Physics: Condensed Matter, 29 (18), pp. 185303, 2017. |
Influence of thermal gradients on the vortex dynamics in CoFeB MTJs Inproceedings 2017 IEEE International Magnetics Conference (INTERMAG), pp. 1-1, 2017. |
Influence of the thermal interface resistance on the thermovoltage of a magnetic tunnel junction Journal Article Physical Review B, 95 , pp. 104441, 2017. |
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). |
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. |
2016 |
Interference-blind microfluidic sensor for ascorbic acid determination by UV/vis spectroscopy Journal Article Sensors and Actuactos B, Chemical, 224 , pp. 668, 2016. |
Femtosecond control of electric currents in metallic ferromagnetic heterostructures Journal Article Nature Nanotechnology, 11 , pp. 455, 2016. |
Graphene field-effect transistor array with integrated electrolytic gates scaled to 200 mm Journal Article Cond Matter, 28 , 2016. |
AlOx barrier growth in magnetic tunnel junctions for sensor applications Journal Article Journal of Magnetism and Magnetic Materials, 412 , pp. 181-184, 2016. |
Enhancing the injection locking range of spin torque oscillators through mutual coupling Journal Article Applied Physics Letters, 109 (25), 2016. |
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. |
Spintronic Sensors Journal Article Proceedings of the IEEE, 104 (10), pp. 1894-1918, 2016. |
2015 |
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. |
Total ionizing dose (TID) evaluation of magnetic tunnel junction (MTJ) current sensors Journal Article Sensors and Actuators a-Physical, 225 (119-127), 2015. |
Strategies for pTesla Field Detection Using Magnetoresistive Sensors With a Soft Pinned Sensing Layer Journal Article IEEE Trans. Magn, 51 (1), pp. 4400204, 2015. |
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. |
Static and Dynamic Analysis of Magnetic Tunnel Junctions With Wedged MgO Barrier Journal Article IEEE Trans. Magn, 51 (1), pp. 4400304, 2015. |
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. |
Impact of MgO Thickness on the Performance of Spin-Transfer Torque Nano-Oscillators Journal Article IEEE Transactions on Magnetics , 51 (11), 2015. |
Integration of magnetoresistive sensors with atomic force microscopy cantilevers for scanning magnetoresistance microscopy applications Journal Article IEEE Transactions on Magnetics, 51 , 2015. |
Linearization strategies for high sensitivity magnetoresistive sensors Journal Article Eur. Phys. J. Appl. Phys., 72 , 2015. |
Polyacrylic acid coated and non-coated iron-oxide nanoparticles are not genotoxic to human T-lymphocites Journal Article Toxicology Letters, 234 (67), 2015. |
Magnetoresistive nanosensors: controlling magnetism at the nanoscale Journal Article Nanotechnology, 27 (4), 2015. |
2014 |
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. |
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. |
Ordered arrays of tilted silicon nanobelts with enhanced solar hydrogen evolution performance Journal Article Nanoscale, 6 , pp. 2097-2101, 2014. |
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. |
Magnetic tunnel junction sensors with pTesla sensitivity Journal Article Microsyst. Technol., 20 , pp. 793-802, 2014. |
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. |
MgO-based magnetic tunnel junction sensors array for non-destructive testing applications Journal Article J. Appl. Phys., 115 , pp. 17E513, 2014. |
Magnetic tunnel junction based eddy current testing probe for detection of surface defects Journal Article J. Appl. Phys., 115 (17), pp. 15E16, 2014. |
Linear nanometric tunnel junction sensors with exchange pinned sensing layer Journal Article J. App. Phys., 115 (17), pp. 17E526, 2014. |
2013 |
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. |
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. |
MgO Magnetic Tunnel Junction Electrical Current Sensor With Integrated Ru Thermal Sensor Journal Article IEEE Trans. Magn, 49 (7), pp. 3866-3869, 2013. |
Integration of TMR Sensors in Silicon Microneedles for Magnetic Measurements of Neurons Journal Article IEEE Trans. Magn, 49 (7), pp. 3515-3515, 2013. |
Magnetic tunnel junction sensors with pTesla sensitivity for biomedical imaging Journal Article Smart Sensors, Actuators, and Mems, pp. 8763, 2013. |
Intrinsic Spin Noise in MgO Magnetic Tunnel Junctions Journal Article Appl. Phys. Lett. , 102 (63102), 2013. |
Tunneling magneto thermocurrent in CoFeB/MgO/CoFeB based magnetic tunnel junctions Journal Article Applied Physics Letters, 102 (24), pp. 242413, 2013. |
2012 |
Fractional Modeling of the AC Large-Signal Frequency Response in Magnetoresistive Current Sensors Journal Article Sensors, 13 (12), pp. 17516-17533, 2012. |
GROUP LEADER
THE TEAM
Elisabete Fernandes
Staff researcher
Hugo Oliveira
Staff researcher
Alexandre Chicharo
PhD student (IST)
Miguel Amaral
Master student (U Porto)
RESEARCH
DEPARTMENTS
RESEARCH GROUPS