Implantable Microelectronic Devices

We are working on the implantable electronic technologies for brain implantable devices including encapsulation and neural electrodes fabrication. Our research also develops miniaturised highly sensitive magnetic devices for the next generation of wearable and implantable Magnetomyography (MMG) and Magnetoencephalography (MEG). The figure below simplifies our research on developing devices to be implemented in the brain and skeletal muscle.

Brain_Muscle_HH_RD_HH-01.png

Funding:

H. Heidari, S. Zuo, A. Krasoulis, and K. Nazarpour, “CMOS Magnetic Sensors for Wearable Magnetomyography,” in 40th Int. Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2018.

Liang, X., Ghannam, R. and Heidari, H. Wrist-worn gesture sensing with wearable intelligence. IEEE Sensors Journal, 19(3), pp. 1082-1090, 2019.

 

Spintronics and Magnetic Sensors

We are studying various spintronic and magnetic sensors including Hall effect, Giant Magnetoresistance (GMR), Tunnelling magnetoresistance (TMR), nuclear magnetic resonance (NMR) and fluxgate devices. 

Funding:

Royal Society 0                beste Bit
  • Royal Society (RSG/R1/180269), MAGLAB: Miniaturising Magnetic Biosensing Systems
  • EPSRC DTA Studentship, UofG, Magnetoencephalography

Heidari, H.  Magnetoelectronics: Electronic skins with a global attraction.Nature Electronics, 1(11), pp. 578-579, 2018.

K.M. Lei, H. Heidari et al., “A handheld high-sensitivity micro-NMR CMOS platform with stabilization for multi-type biological/chemical assays” IEEE J. Solid-State Circuits, 52:1, 2017.
V. Nabaei, N. Chandrawati, H. Heidari, "Magnetic biosensors: Modelling and simulation", Biosensors & Bioelectronics, 103, pp. 69-86, 2018. (pdf)
H. Heidari, et al., “CMOS vertical Hall magnetic sensors on flexible substrate” IEEE Sensors J., 16(24) 8736-8743, 2016.
Z. Yin, E. Bonizzoni and H. Heidari, "Magnetoresistive Biosensors for On-Chip Detection and Localization of Paramagnetic Particles," in IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology, vol. 2, no. 3, pp. 179-185, Sept. 2018.
S. Zuo, K. Nazarpour, and H. Heidari, “High-Performance Tunnelling Magnetoresistors for Next Generation Spintronics”, in IEEE Electron Device Letters, 2018.


 Microelectronics Design

We are working on the CMOS sensor interfaces circuits, allowing them to be manufactured as integrated Analog Front-End (AFE) including various circuits building blocks e.g. analogue-to-digital converters (ADC) and DC-DC converters for low-power and high-speed electronics systems.

 

Funding:

              

  • Scottish Funding Council (SFC), NEUROSENSE Network
  • NSFC China, Magnetic-based Air Pollution Monitoring 
  • UofG, Glasgow Knowledge Exchange (GKE), Magneto-Optical Air Quality Sensors
H. Heidari, et al., “A CMOS current-mode magnetic Hall sensor with integrated front-end.” IEEE Trans. Circuits and Systems I: Regular Papers, 11(4), 2015. 
H. Fan, J. Li, Q. Feng, H. Sun and H.Heidari, "Exploiting Smallest Error to Calibrate Non-Linearity in SAR Adcs," in IEEE Access, vol. 6, pp. 42930-42940, 2018.
K. O. Htet, H. Fan and H. Heidari, "Switched-Capacitor DC-DC Converter for Miniaturised Wearable Systems," IEEE Int. Symposium on Circuits and Systems (ISCAS), 2018, pp. 1-5.
H. Fan et al., "A 4-Channel 12-Bit High-Voltage Radiation-Hardened Digital-to-Analog Converter for Low Orbit Satellite Applications," in IEEE Transactions on Circuits and Systems I: Regular Papers, 2018.

 

Energy Harvesting

 

Our research on energy harvesting devices includes Photovoltaic (PV) cells and wireless power transmission (PWT).

Funding:

            
  • EPSRC IAA (EP/R511705/1), PowerDrive: Power Management Chipsets in Autonomous Vehicles

 

K. O. Htet, R. Ghannam, Q. H. Abbasi and H. Heidari, "Power Management Using Photovoltaic Cells for Implantable Devices," in IEEE Access, vol. 6, pp. 42156-42164, 2018.
J. Zhao, R. Ghannam, Q. Abbasi, M. Imran and H.Heidari, Simulation of Photovoltaic Cells for Implantable Sensory Applications, in Proc. IEEE SENSORS Conf., 2018. 

Zhao, J., Ghannam, R.  , Yuan, M., Tam, H., Imran, M.  and Heidari, H. Design, test and optimization of inductive coupled coils for implantable biomedical devices.Journal of Low Power Electronics, 15(1), 2019.

 
Founded in July 2017, meLAB aims to promote and support engineering and physical science research in microelectronics design, spintronics, magnetic sensors, and energy harvesting. Our research is broadly ranging from theoretical, simulation, design, fabrication and experimental work in fundamental physics to applications of wearable and implantable electronics.