CARE | Faculty | Prof. Pushpapraj Singh

Prof. Pushpapraj Singh
Associate Professor

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About

Dr. Singh has received M. Tech. (Solid State Technology) from Indian Institute of Technology Madras, India in 2007. He moved to Nanyang Technological University (NTU) Singapore in January 2008 for his PhD under Prof. Miao Jianmin. In his PhD thesis work, he conducted extensive work for the piezoresistive sensitivity enhancement in silicon nanowires, planar and nanowire transistors. He also introduced the novel concept of gate-all-around junction less transistor as an improved sensing element for improving the strain detection limits.

After PhD, Dr. Singh has continued (since December 2011) his research work as a Research Scientist in A*STAR Institute of Microelectronics (IME), Singapore while working on several MEMS projects (MEMS based switches and non-volatile memories, piezoresistive and acoustic wave pressure/force sensors, inertial sensors, miniaturized medical devices). He joined CARE, IIT Delhi as an Assistant Professor in September 2016.

Course Offered

CRL 732–MEMS Sensors (Design, Integration and Packaging)
CRL 621–Fundamentals of Semiconductor Devices
CRL 726–RF MEMS Design and Technology
CRP 718–RF and Microwave Measurement Lab

Research Interest

Piezoresistive MEMS
Electromechanical (EM) Switching (“relay”) Device
MEMS Non Volatile Memory
Magnetic Tunnel Junction (MTJ) based MEMS Sensor
Metal-based MEMS Switches for RADAR beam steering Antenna
Design and Development of MEMS Pirani Gauge
MEMS sensors for flexible electronics

1.Piezoresistive MEMS

Diameter Dependent Piezoresistive Sensing Performance of Junctionless Gate All Around Nanowire FET, Vaibhav Rana, Gufran Ahmed, Akhil K. Ramesh, Samaresh Das, Pushpapraj Singh, IEEE Trans. Elec. Dev., DOI: 10.1109/TED.2020.2991140, 2020.

Investigation of Piezoresistive Effect in Poly-crystalline MoS2 film based Flexible Sensor,Vaibhav Rana, Pratisha Gangwar, Jagan S. Meena, Akhil K. Ramesh, K.N. Bhatt, Samaresh Das,Pushpapraj Singh,Nanotechnology,https://doi.org/10.1088/1361-6528/ab9970, 2020.

2.Electromechanical (EM) Switching (“relay”) Device

i)Contact-mode EM switches for Memory & Binary Applications

Unlike electronic switches, mechanical switches (“relays”) operate by making/breaking physical contact and therefore offers ideal characteristics (abrupt switching with zero off-state current). In order to fully realize their promise, however, relays must operate in rigid electronic conditions with low-energy intake to be viable for ultralow-power digital applications. We devising new approach towards enabling energy-efficient longevity operation.

ii)Stress Engineering for CMOS-MEMS Process

Stress gradient present within the relay structure modify the actual air-gap that affects operating voltage. We introduce a laser-driven low thermal budget annealing technique (‘PuLA’) for stress control.

Pull-In Voltage: VPI = ƒ(Geometry, Air-gap, Stress) gradient)

Laser-assisted stress reduction in molybdenum microstructures for CMOS compatible MEMS integration, Pushpapraj Singh, Sushil Kumar, Sensor and Actuator A: Physical, vol.295, pp.523-531, 2019

iii)Essence of Sculpting Electrode for Field Enhancement

We are improving electrostatic coupling between electrodes via sub-micron gap tuning over side wall for reducing actuation voltage.

3.MEMS Non Volatile Memory

MEM-FLASH non-volatile memory device for high-temperature multibit data storage, Pushpapraj Singh, Dhairya Singh Arya, Udit Jain, Appl. Phys. Lett. 115, 043501 (2019).
A Cantilever type bistable MEM nonvolatile memory with Piezoelectric deactuation for high temperature applications, Dhairya Singh Arya, Sushil Kumar, Pushpapraj Singh, IEEE Sensors 2019, October 27-30, Montreal, Canada.

Hold-bias free MEM power gate for zero standby energy dissipation in CMOS ICs, Dhairya Singh Arya, Sushil Kumar, Pushpapraj Singh, IEEE MEMS, 2020, January 18-22, Vancouver, Canada. (Shortlisted for Best Paper Award)

4.Magnetic Tunnel Junction (MTJ) based MEMS Sensor

Inverse Magnetostriction (Villari effect) property is used for the sensor.
Tunnel magnetoresistance (TMR) of the MTJ decides the sensitivity.
MTJ with MgO barrier sandwiched between ferromagnetic sense layer and reference layer act as the sensing element.
Stress measurement using single layer magnetostrictive thin films for MEMS force sensor, Akhil Ramesh, Vaibhav Rana, Pintu Das, Pushpapraj Singh, IEEE MEMS 2019, Jan. 27- 31, Seoul, Korea

5.Metal-based MEMS Switches for RADAR beam steering Antenna

MEMS switches provide reconfigurability to RF devices without much compromising isolation and insertion loss. These are best suited for RADAR beam steering. MEMS series and the shunt switch with excellent performances are the main requirements of today’s era. RF MEMS series switch (Fig. 1) provides insertion loss < -0.6dB and isolation loss > -15.74dB up to 50GHz using only 3.9V [1]. A shunt MEMS switch has also been designed, which gives good performance and requires only 18.9V for actuation. These designed switches will be used for providing phase shift for beam steering antenna.

Fig1. (a) Top view (b) Side view of the proposed switch (b) Insertion (S21) and Return Loss (S11) in On-state (c) Isolation (S21) in Off-state

Metal contact rf mems switch design for high performance in ka band” accepted in 2020 Second International Conference on Materials Science and Manufacturing Technology (ICMSMT 2020).

6.Design and Development of MEMS Pirani Gauge

Micromachined Pirani gauges are embedded with micro sensors for fast, low cost and precise measurement of vacuum. These are primarily important to check seal quality and calibrating device output over the passage of time. However, the co-fabrication of Pirani gauge and microsensor demands lower footprint, lower power consumption and a wider dynamic range. We are trying to develop next generation MEMS Pirani Gauges that are smaller and smarter than their precursors.

Removal of Dielectric Membrane

We are trying to explore next generation materials that can be suspended without dielectric membrane for mechanical support. The absence of additional supplementary material in the sensing element increases the sensing area and empowers the in-situ monitoring capability.

Reduction in filament temperature

The corrosion of the sensing element due to high element temperature results in response variation and reduction in lifetime of the device. We are formulating ideas to keep the filament temperature within the safe limits.

Journals

On the notion of vdW-force loaded hysteretic switching for precise release voltage design in all-metal electrostatic logic relay
Sushil Kumar, Dhairya Singh Arya, Khushbu Singh Raghav, Manu Garg, Pushpapraj Singh
Sensors and Actuators A: Physical vol.328, 112785, 2021
Volatile or non-volatile switching? Establishing design parameters for metal-contact relays using ON/OFF hysteretic behavior (RT to 300 °C)
Sushil Kumar, Dhairya Singh Arya, Pushpapraj Singh
Appl. Phys. Lett. 118, 013505, 2021
Reducing Dynamism in DRAM with Bistable MEMS Switch as Sleep Transistor
Dhairya Singh Arya, Sushil Kumar, Manu Garg, Nikhil Chourasiya, Pushpapraj Singh
IEEE Transactions on Electron Devices, vol. 68, no. 3, pp. 1045-1049, 2021
Highly Responsive Metal Oxide (V2O5)-Based NEMS Pirani Gauge for In-Situ Hermeticity Monitoring
Manu Garg, Dhairya Singh Arya, Sumit Sharma, Sushil Kumar, Wasi Uddin, Samaresh Das, Pushpapraj Singh
Journal of Microelectromechanical Systems, vol. 30, no. 3, pp. 340-342, 2021
Charge Transport Modelling in Polycrystalline MoS2 based on Fluctuation Induced Tunneling
Vaibhav Rana, Pratisha Gangwar, Akhil K. Ramesh, K.N. Bhatt, M. M. Nayak, Samaresh Das, Pushpapraj Singh
2020 (under review)
Polycrystalline MoS2 based MEMS pressure sensor for altitude measurements
Vaibhav Rana, Pratisha Gangwar, Akhil K. Ramesh, K.N. Bhatt, M M Nayak, Samaresh Das, Pushpapraj Singh
2020 (under review)
Molybdenum based MEMS shunt switch for RF signal manipulation
Niharika Narang, Dhairya Singh Arya, Pranav Kumar Shrivastava, Pushparaj Singh
2020 (under review)
Maneuvering forces in nano regime for precision actuation in bistable MEMS Non Volatile Memory elements
Dhairya Singh Arya, Sushil Kumar, Manu Garg, Pushpapraj Singh
2020 (under review)
Optimization of exchange stiffness and magneto crystalline anisotropy for Hall bar shaped MTJ based Impact Sensor
Akhil K Ramesh, Vaibhav Rana, Yuan-Chieh Tseng, Pushpapraj Singh
2020 (Under review)
Flexible Anisotropic Magnetoresistive device for strain sensing
Akhil K Ramesh, Li-Zai Tsai, Vaibhav Rana, Yuan-Chieh Tseng
2020 (Under review)
Atomistic magnetic modelling for TMR and damping behaviors of MTJ
Akhil K Ramesh, Ting-Chia Ku, Vaibhav Rana, Yuan-Chieh Tseng, Pushparaj Singh
2020 (Under review)
Wilkinson Power Divider Using Slow-wave Structure, Capacitive load and Isolation Network Improvement
Niharika Narang, Shrikant Kumar, Pranav Kumar, Pushpapraj Singh
2020 (Under Review)
Contact Encoding in MEMS Relay from Dual Functionality Perspective
Sushil Kumar, Dhairya Singh Arya, Pushpapraj Singh
2020 (Under Review)
A laser patterned zero bias Au/Al2O3/Mo metal-insulator-metal diode rectifier for RF detection
Shilpi Shriwastava, Dhairya Singh Arya, Sandeep Sharma, karamvir singh, Pushpapraj Singh, C.C.Tripathi Tripathi
Solid State Electronics, Vol. 171, pp. 107870, 2020
A highly sensitive wearable flexible strain sensor based on polycrystalline MoS2 thin film
Vaibhav Rana, Pratisha Gangwar, Jagan S. Meena, Akhil K. Ramesh, K.N. Bhatt, Samaresh Das, Pushpapraj Singh
Nanotechnology, Vol. 31, pp. 385501-8, 2020
Diameter Dependent Piezoresistive Sensing Performance of Junctionless Gate All Around Nanowire FET
Vaibhav Rana, Gufran Ahmed, Akhil K. Ramesh, Samaresh Das, Pushpapraj Singh
IEEE Trans. Elec. Dev., Vol. 67, pp. 2884-2889, 2020
Laser-assisted stress reduction in molybdenum microstructures for CMOS compatible MEMS integration
Pushpapraj Singh, Sushil Kumar
Sensor and Actuator A: Physical, vol.295, pp.523-531, 2019
MEM-FLASH non-volatile memory device for high-temperature multibit data storage
Pushpapraj Singh, Dhairya Singh Arya, Udit Jain
Appl. Phys. Lett. 115, 043501 (2019)
Effectiveness of Oxide Trench Array as a Passive Temperature Compensation Structure in AlN-on-Silicon Micromechanical Resonators
Qingyun Xie, Nan Wang, Chengliang Sun, Andrew B. Randles, Pushpapraj Singh, Xiaolin Zhang, and Yuandong Gu
Applied Physics Letters, 110, pp. 083501 (2017)
Anchor-free NEMS Non-volatile Memory Cell for Harsh Environment Data Storage
Pushpapraj Singh, Geng-Li Chua, Jayaraman Karthik Gopal, Anh Tuan Do and Tony Tae-Hyoung Kim>
Journal of Micromechanics and Microelectronics, 24, pp. 115007, 2014
Molecular adhesion controlled microelectromechanical memory device for harsh environment data storage
Chua Geng Li, Pushpapraj Singh, Kim Tae Hyoung
Applied Physics Letters, 105, pp. 113503 (2014)
300OC Reliable All Metal (Molybdenum) Nanoelectromechanical Switch for Rugged Electronics Applications
You Qian, Bo Woon Soon, Pushpapraj Singh, Humberto Campanella Pineda and Chengkuo Lee
Nanoscale, 6, pp. 5606-5611, 2014
A cantilever-based NEM Non-volatile memory utilizing electrostatic actuation and vibrational deactuation for high temperature operation
Jayaraman Karthik Gopal, Anh Tuan Do, Pushpapraj Singh, Chua Geng Li, Tony Tae-Hyoung Kim
IEEE Trans. Elec. Dev., 61, pp. 2177-2185, 2014
Tantalum-nitride antifuse electromechanical OTP for embedded memory applications
Pushpapraj Singh, Vincent Pott, Muhammad Nur Aslani and Dim-Lee Kwong
Electron Device Letters, 34, pp. 987-989, 2013
Piezoresistive sensing performance of junctionless nanowire FET
Pushpapraj Singh, Jianmin Miao, Vincent Pott, Woo-Tae Park, Dim-Lee Kwong
Electron Device Letters, 2012, 33, pp. 1759, 2012
An Inductively Powered Implantable Blood Flow Sensor Microsystem for Vascular Grafts
Jia Hao Cheong, Simon Sheung Yan Ng, Xin Liu, Rui-Feng Xue, Huey Jen Lim, Pradeep Basappa Khannur, Kok Lim Chan, Andreas Astuti Lee, Kai Kang, Li Shiah Lim, Cairan He, Pushpapraj Singh,Woo-Tae Park and Minkyu Je
IEEE Trans. on Biomedical Engineering, 59 (9), pp. 2466, 2012
Tunable Piezoresistance and Noise in Silicon Gate-All-Around Nanowire Transistors
Pushpapraj Singh, Woo-Tae Park, Jianmin Miao, Shao Lichun, Rama Krishna Kotlanka, Dim-Lee Kwong
Applied Physics Letters, 100, pp. 063106, 2012
Gate-All-Around Junctionless Nanowire MOSFET with Improved Low-Frequency Noise Behavior
Pushpapraj Singh, Navab Singh, Jianmin Miao, Woo-Tae Park, Dim-Lee Kwong
Electron Device Letters, 32 (12), pp. 1752, 2011
Gate-Bias Controlled Sensitivity and Signal-to-Noise Ratio Enhancement in Nanowire FET Pressure Sensor
Pushpapraj Singh, Jianmin Miao, Woo-Tae Park, Shao Lichun, Dim-Lee Kwong
Journal of Micromechanics and Microelectronics, 21, pp. 105007, 2011
Design, Fabrication and Characterization of ultra-miniature piezoresistive Pressure Sensors for medical implants
Li-Shiah Lim, Woo-Tae Park, Liang Lou, Han-Hua Feng, Pushpapraj Singh
Advanced Material Research, 254, pp. 94-98, 2011
Microcantilever sensors with embedded piezoresistive transistor read-out: design and characterization
Pushpapraj Singh, Jianmin Miao, Rama Krishna Kotlanka, Shao Lichun, Woo Tae Park, Dim-Lee Kwong
Sensors and Actuators: A, 171, pp. 178, 2011
Tunable microcantilever sensors with embedded piezotransistors
Pushpapraj Singh, Jianmin Miao, Lichun Shao, Ramakrishna Kotlanka, and Dim-Lee Kwong
Electronics Letters, 46, pp.1557, 2010

Conference papers

Gauge Factor Improvement of Spintronic MEMS Pressure Sensors using Voltage Controlled Magnetic Anisotropy
Akhil K Ramesh, Vaibhav Rana, Yuan-Chieh Tseng, Pushparaj Singh
ICEE-2020, Nov 26-28 2020, New Delhi, India (Submitted)
Wearable MoS2 sensor
Vaibhav Rana, Pratisha Gangwar, Samaresh Das,Pushpapraj Singh
Nano-India, IISC Banglore, India. Dec-2020 (Submitted)
MoS2 flexible sensor for body movement detection
Vaibhav Rana, Pratisha Gangwar, Akhil K Ramesh, Pranav Shrivastava, Shakti Singh Chauhan, Samaresh Das,Pushpapraj Singh
ICEE-2020, Nov 26-28 2020, New Delhi, India (Submitted)
Effect of actuation electrode design on RF performance of MEMS shunt switch
Niharika Narang, Pranav Kumar Shrivastava, Pushparaj Singh
ICEE-2020, Nov 26-28 2020, New Delhi, India (Submitted)
Polymer Based Micro-Mesh MEMS Pirani Gauge for Vacuum Package Characterization
Manu Garg, Dhairya S. Arya, Mohamad G. Moinuddin, Pushpapraj Singh
ICEE-2020, Nov 26-28 2020, New Delhi, India (Submitted)
Ultra Low Actuation Voltage MEMS Relays from Dual Functionality Perspective
Sushil Kumar, Dhairya Singh Arya, Pushpapraj Singh
ICEE-2020, Nov 26-28 2020, New Delhi, India (Submitted)
Hold-bias free MEM power gate for zero standby energy dissipation in CMOS ICs (Shortlisted for Best Paper Award)
Dhairya Singh Arya, Sushil Kumar, Pushpapraj Singh
IEEE MEMS, 2020, January 18-22, Vancouver, Canada
Experimental Investigation of Stable Molybdenum-Contact Relay Operation and Adhesion Monitoring at 300 °C Using ON/OFF Hysteretic Behavior
Sushil Kumar, Pushpapraj Singh
IEEE Nano, 2020, July 28-31, Montreal Canada
Metal contact RF MEMS switch design for high performance in Ka band
Niharika Narang, Pushpapraj Singh
ICMSMT 2020, April 9-10, Coimbatore, India
Stress measurement using single layer magnetostrictive thin films for MEMS force sensor
Akhil Ramesh, Vaibhav Rana, Pintu Das, Pushpapraj Singh
IEEE MEMS 2019, Jan. 27- 31, Seoul, Korea
Designing of Ruthenium based MEMS Non-volatile memory for high temperature data storage applications
Dhairya Singh Arya, Sushil Kumar, Pushpapraj Singh
IWPSD-2019, December 17-20, Kolkata, India
CMOS compatible laser-driven annealing technique to control deflection in MEMS microstructures
Sushil Kumar, Dhairya Singh Arya, Pushpapraj Singh
IWPSD-2019, December 17-20, Kolkata, India
A Cantilever type bistable MEM nonvolatile memory with Piezoelectric deactuation for high temperature applications
Dhairya Singh Arya, Sushil Kumar, Pushpapraj Singh
IEEE Sensors 2019, October 27-30, Montreal, Canada
Low-cost MoS2 piezoresistive wire for ultrasensitive MEMS pressure sensor
Vaibhav Rana, Akhil K. Ramesh, Samaresh Das, Pushpapraj Singh
IEEE MEMS, 2019, Jan 27- 31, Seoul, Korea
Designing of highly reliable Ruthenium based bistable ultra-high speed MEMS Non Volatile Memory for high-temperature data storage
Dhairya Singh Arya, Udit Jain, Pushpapraj Singh
ICEE, IISC Banglore, India. Dec-2018
Development of Magnetostrictive Sense Layer for Ultrasensitive Spintronic MEMS Sensor
Akhil Ramesh, Pintu Das, Pushpapraj Singh
IEEE INDICON 2018, Dec. 15- 18 , Coimbatore, India
Ultra-low actuation voltage MEMS switch with tunable side wall sacrificial layer
Sushil Kumar, Pushpapraj Singh IEEE Indicon, Dec 15-17 2017, Roorkee, India
Sub-micron gap tuning over side wall for ultra-low voltage MEMS switching application
Sushil Kumar, Pushpapraj Singh
IWPSD, Dec 11-15 2017, New Delhi, India
Design, modeling and simulation of square diaphragm based piezoelectric (AlN) mems acoustic sensor for high SPL measurements
Dhairya Singh Arya, Sushil Kumar, Mahanth Prasad, Pushpapraj Singh, C. C. Tripathi
IWPSD, Dec 11-15 2017, New Delhi, India
Magnetostrictive Sense Layer for MTJ based Ultrasensitive MEMS Pressure Sensor
Akhil K. Ramesh, Pintu Das, Pushpapraj Singh
IWPSD, Dec 11-15 2017, New Delhi, India
Low-cost MoS2 nanowire fabrication method for pressure sensor
Vaibhav Rana, Samaresh Das, Pushpapraj Singh
IWPSD, Dec 11-15 2017, New Delhi, India
Low-cost and reliable nanowire fabrication method for ultrasensitive pressure sensor
Vaibhav Rana, K. N. Bhat, Samaresh Das, Pushpapraj Singh
IEEE Sensors, Oct 29- 1 Nov 2017, Glasgow, Scotland
Capturing bacteria through a bio-sensitive heterostructure surface: Photoluminescence studies
Saakshi Dhanekar, Priyanka Dwivedi, Neha Chauhan, P Vivekanandan, Sakthi Kumar, Pushpapraj Singh
IEEE Sensors, Oct 29- 1 Nov 2017, Glasgow, Scotland
An Acoustic Wave Resonant Sensor for Turbine Oil Quality Monitoring
Qingyun Xie , Chengliang Sun , Nan Wang , Andrew B. Randles , Pushpapraj Singh , Xiaolin Zhang , Yuandong Gu
TICEAS, 21-22 Feb 2017 Singapore
A Passively Temperature-Compensated Dual-Frequency AlN-on-Silicon Resonator For Accurate Pressure Sensing
Qingyun Xie, Nan Wang, Chengliang Sun, Andrew B. Randles, Pushpapraj Singh, Xiaolin Zhang and Yuandong Gu
IEEE MEMS, 22-26 Jan, 2017 Las Vegas USA
Fabrication and Characterization of a hermeticity indicator for MEMS AI-Ge Bonding
DING Zhipeng, Pushpapraj Singh, Sanchitha N Fernando, Jinghui XU
ICMAT, 28 June-3July, 2015 Singapore
Ultrasensitive and Miniaturized Tactile Sensors for Medical Applications
Tan Ee Lim, Pushpapraj Singh
ICMAT, 28 June-3July, 2015 Singapore
Ultrasensitive Pirani Gauge as Hermiticity Indicator for Sealed MEMS Cavities
Pushpapraj Singh, Sanchitha N Fernando, Jinghui XU, Zhipeng DING
ICMAT, 28 June-3July, 2015 Singapore
Novel RESET phenomenon for RF MEMS switches
Chua Geng Li, Pushpapraj Singh, Bo Woon Soon, Navab Singh
ICMAT, 28 June-3July, 2015 Singapore
Low Power Memory Design for High Temperature in Ruggedized Electronics
Tony Tae-Hyoung Kim, Ngoc Le Ba, Anh Tuan Do, Jayaraman Gopal, Geng Li Chua, Pushpapraj Singh
SOCC, 3-6 Nov 2014, Jeju Korea
A Monolithic 9DOF Capacitive Inertial MEMS Platform
Ilker Ender Ocak, Cheam Daw Don, Sanchitha Nirodha Fernando, Angel Lin Tsu-Hui, Pushpapraj Singh, Navab Singh, Alex Gu Yuandong and Dim Lee Kwong
IEDM, 15-17 Dec, 2014, San Francisco USA
Array implementation of a cantilever-based non-volatile memory using vibrational reset procedure
Jayaraman Karthik Gopal, Pushpapraj Singh
ESSCIRC, 16-20 Sep 2013, Bucharest, Romania
Contact stiction of three terminal MEMS cantilever device for non-volatile memory applications
Chua Geng Li, Pushpapraj Singh, Julius Tsai Ming Lin, Navab Singh
ICMAT, 30 June- 5 Jul 2013, Singapore
An improved Read/Write Scheme for Anchorless NEMS-CMOS Non-volatile Memory
Anh Tuan Do, Karthik G. Jayaraman, Vincent Pott, Geng Li Chua, Pushpapraj Singh, and Tony T. Kim
ISCAS, 19 - 23 May 2013, Beijing China
Design and characterization of tantalum-nitride switch for one-time-programmable memory applications
Pushpapraj Singh, Chua Geng Li, Julius Tsai Ming Lin
NVMTS, 31 Oct- 2 Nov 2012, Singapore
Piezoresistance and low frequency noise study in junctionless nanowire FET
Pushpapraj Singh, Jianmin Miao, Woo-Tae Park, Dim-Lee Kwong
IEEE MEMS, 29 Jan-2 Feb 2012, Paris France
Battery less MEMS Flow Sensor within Prosthetic Vascular Graft
Pushpapraj Singh, Woo-Tae Park, Han-Hua Feng
DSR, 3- 5 August 2011, Singapore
Piezoresistance Effects in Junctionless Nanowire Transistors
Pushpapraj Singh, Jianmin Miao, Woo-Tae Park, Lim Li Shiah, Dim-Lee Kwong
ICMAT, 26 Jun-1 Jul 2011, Singapore
Ultrasensitive Pressure Sensor Based on Gate- All-Around Nanowire FET
Pushpapraj Singh, Jianmin Miao, Woo Tae Park, Dim-Lee Kwong
Transducers, 5- 9 June 2011, Beijing China
Design, Fabrication and Characterization of ultra-miniature piezoresistive Pressure Sensors for medical implants
Li-Shiah Lim, Woo-Tae Park, Liang Lou, Pushpapraj Singh, Han-Hua Feng
ICMAT, 26 Jun-1 Jul 2011, Singapore
Impact of channel aspect ratio on the sensitivity of transistor-integrated microcantilever biosensor
Pushpapraj Singh, Jianmin Miao, Lichun Shao, Rama Krishna Kotlanka, Woo Tae Park, Dim-Lee Kwong
ICCMB2, 2-4 August 2010, Singapore
Piezotransistor-Embedded Microcantilever Platform for Strain Sensing Applications
Pushpapraj Singh, Jianmin Miao
IEEE Sensors, 1-4 November 2010, Hawaii USA