IITD_Logo Centre for Applied Research in Electronics
Indian Institute of Technology Delhi
IITD | Home | Gallery | Contact Us

Dr. Pushpapraj Singh

Assistant Professor

Back_ButtonBack to Faculty Page

Samaresh
  • About
  • Research Interest
  • Contact Information
  • Funded Project
  • Student Project
  • PhD Scholar
  • Publication

About

Dr. Pushpapraj Singh has received M.Sc. (Electronics) from Aligarh Muslim University Aligarh and M. Tech. (Solid State Technology) from Indian Institute of Technology Madras, India in 2004 and 2007, respectively. For the M.Tech. Project (jointly under Prof. Nandita DasGupta and Prof. M.S. Ramachandra Rao), he was involved in the designing, simulation and in-house fabrication of MOS capacitors with different gate materials. Pulsed laser deposition method is used to deposit the HfO2 (also co-doped HfO2) and MOS capacitors are fabricated and characterized. After M. Tech., he has moved to Nanyang Technological University (NTU) Singapore in January 2008 for his PhD research work 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

Research Interest

  1. Microelectromechanical systems (MEMS) sensors and micro-systems. 

  2. PiezoresistiveMEMS Sensor

  3. MEMS Switching Device:

  4. MEMS Non Volatile Memory

  5. Spintronic MEMS Sensor

PiezoresistiveMEMS Sensor

  • Nanowire Based Sensor, 2-D Material Based Sensor, Low and High Temperature Sensing, CMOS Compatible Fabrication. 

  • Pushparaj

    MEMS Switching Device

  • Temperature Tolerant Energy-Efficient All Metal Micromechanical Switch, Stress Engineering for CMOS-MEMS Process, MEMS for RF Applications Pushparaj

    MEMS Non Volatile Memory

  • MEMS Based NVM for Harsh Environment Data Storage. 

  • Pushparaj

    Spintronic MEMS Sensor

  • Magnetic Tunnel Junction (MTJ) as Sensing element, Futuristic Magnetic MEMS device, Spintronic Strain Gauges. 

  • Pushparaj

    Contact Information

    Email prsingh@care.iitd.ac.in
    Telephone (O) +91-11-26591103
    Facsimile +91-11-26591103, 26596219
    Address Centre for Applied Research in Electronics,
    Indian Institute of Technology, Delhi
    Hauz Khas, New Delhi - 110 016, INDIA










    Funded Projects

    1. Sub-5V Metal Based MEMS SPDT Switch for Radar Beam Steering Antenna Under Harsh Environments (PI), IMPacting Research INnovation and Technology, MHRD India, 160.92 Lakh, Submitted (under review).

    2. Design and Development of Conducting Filler Loaded Piezoelectric Polymer Based Flexible Micro Device for Energy Harvesting (Co-PI), Device Development Programme Ministry Of Science & Technology Government Of India, 50.68 Lakh, Ongoing 08/2018-07/2021.

    3. MEMS and Microelectronics Device Development, Interface Circuit and Systems (Co-PI), DST Fund For Improvement of S&T Infrastructure, 146 lakh, Ongoing 03/2018-03/2021.

    4. MBE growth of 2D materials and van der Waal heterostructures for applications in sensors and optoelectronic devices (Co-PI), MHRD-IITD Grand Challenge, 1000 Lakh, Ongoing 06/2018-06/2023.

    5. MEMS-based non-volatile memory (NVM) for harsh environment data storage (PI), Early Career Researcher (DST), 54.84 Lakh, Ongoing 03/2017-02/ 2020.

    6. Magnetic Tunnel Junctions as Sensing Element for MEMS Based Force Sensor (PI), FIRP (IIT Delhi), 10 Lakh, Ongoing 12/2016-12/2018.

    7. High power device and MEMS based non-volatile memory development for harsh environment applications (Jointly With Prof. Ankur Gupta), IIT Delhi start-up seed grant, 40 Lakh, Ongoing 01/2017-01/2020.

    8. MEMS device development for environmental monitoring, IIT Delhi start-up matching grant, 30 Lakh, Ongoing 07/2017-07/2020.

    M.Tech Project

    Ongoing

    1. Anurag Singh, Strain induced photo-current modulation in nanowire FET(2018-2019).

    2. Udit Jain,Design and fabrication of MEMS based non-volatile memory(2018-2019).

    Completed

    1. Naveen Prakash T., Modelling of the electrostatic NEMS switchespervisor: Dr. Samaresh Das, 2016

    2. Kailash Vijayakumar, Surface Acoustic Wave induced nano-electromechanical non-volatile memory for high temperature enviornment-Completed

    3. Yougank Bhardwaj- Development and Characterization of Nano Electromechanical switch for Non-Volatile Memory Applications.

    4. Abbin Perunnilathil Joy- High performance MEMS actuators for faster and low power computing applications.

    5. Kshitij Saxena, Piezoresistive cantilever for pressure sensing.

    6. Saurabh Singh,Metal oxide channel based MOSFET

    7. Saket Saurabh, MEMS cantilever for RF signal modulation

    8. Deepak Sharma- Microcontroller based circuit design for sensing/security applications.

    Ongoing

      Samaresh Vaibhav Rana

      Area  : Piezoresistive MEMS sensors for force/pressure sensing

      Fellowship  : Institute Fellowship
      Supervisor :Dr. Pushpapraj Singh,Dr. Samaresh Das

      Samaresh Sushil Kumar

      Area  : Metal based bi-stable MEMS switches

      Fellowship  : Institute Fellowship
      Supervisor : Dr. Pushpapraj Singh

      Samaresh Dhairya Singh Arya

      Area  : MEMS based non-volatile memory for harsh environment data storage

      Fellowship  :Institute Fellowship
      Supervisor :Dr. Pushpapraj Singh

      Samaresh Akhil K Ramesh

      Area  : MTJ based sensing element for ultrasensitive pressure detection.

      Fellowship  : Institute Fellowship
      Supervisor :Dr. Pushpapraj Singh

      Samaresh Niharika Narang

      Area  : MEMS switches for RF signal manipulation

      Fellowship  : Project Fellowship
      Supervisor :Dr. Pushparaj Singh

    Journals

    1. Pushpapraj Singh, Jianmin Miao, Lichun Shao, Ramakrishna Kotlanka, and Dim-Lee Kwong, “Tunable microcantilever sensors with embedded piezotransistors”, Electronics Letters, 46, pp.1557, 2010.

    2. 2. Pushpapraj Singh, Jianmin Miao, Rama Krishna Kotlanka, Shao Lichun, Woo Tae Park, Dim-Lee Kwong, “Microcantilever sensors with embedded piezoresistive transistor read-out: design and characterization”, Sensors and Actuators: A , 171, pp. 178, 2011.

    3. 3. Li-Shiah Lim, Woo-Tae Park, Liang Lou, Han-Hua Feng, Pushpapraj Singh , “Design, Fabrication and Characterization of ultra-miniature piezoresistive Pressure Sensors for medical implants”, Advanced Material Research, 254, pp. 94-98, 2011.

    4. 4. Pushpapraj Singh, Jianmin Miao, Woo-Tae Park, Shao Lichun, Dim-Lee Kwong , “Gate-Bias Controlled Sensitivity and Signal-to-Noise Ratio Enhancement in Nanowire FET Pressure Sensor”, Journal of Micromechanics and Microelectronics, 21, pp. 105007, 2011.

    5. 5. Pushpapraj Singh, Navab Singh, Jianmin Miao, Woo-Tae Park, Dim-Lee Kwong , “Gate-All-Around Junctionless Nanowire MOSFET with Improved Low-Frequency Noise Behavior”, Electron Device Letters, 32 (12), pp. 1752, 2011.

    6. 6. Pushpapraj Singh, Woo-Tae Park, Jianmin Miao, Shao Lichun, Rama Krishna Kotlanka, Dim-Lee Kwong , “Tunable Piezoresistance and Noise in Silicon Gate-All-Around Nanowire Transistors”, Applied Physics Letters , 100, pp. 063106, 2012.

    7. 7. 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, “An Inductively Powered Implantable Blood Flow Sensor Microsystem for Vascular Grafts”, IEEE Trans. on Biomedical Engineering, 59 (9), pp. 2466, 2012.

    8. 8. Pushpapraj Singh, Jianmin Miao, Vincent Pott, Woo-Tae Park, Dim-Lee Kwong, “Piezoresistive sensing performance of junctionless nanowire FET”, Electron Device Letters, 2012, 33, pp. 1759, 2012.

    9. 9. Pushpapraj Singh, Vincent Pott, Muhammad Nur Aslani and Dim-Lee Kwong, “Tantalum-nitride antifuse electromechanical OTP for embedded memory applications”, Electron Device Letters, 34, pp. 987-989, 2013.

    10. 10. Jayaraman Karthik Gopal, Anh Tuan Do, Pushpapraj Singh, Chua Geng Li, Tony Tae-Hyoung Kim “A cantilever-based NEM Non-volatile memory utilizing electrostatic actuation and vibrational deactuation for high temperature operation ”, IEEE Trans. Elec. Dev., 61, pp. 2177-2185, 2014.

    11. 11. You Qian, Bo Woon Soon, Pushpapraj Singh, Humberto Campanella Pineda and Chengkuo Lee, “300OC Reliable All Metal (Molybdenum) Nanoelectromechanical Switch for Rugged Electronics Applications”, Nanoscale, 6, pp. 5606-5611, 2014.

    12. 12. Chua Geng Li, Pushpapraj Singh, Kim Tae Hyoung, “Molecular adhesion controlled microelectromechanical memory device for harsh environment data storage”, Applied Physics Letters, 105, pp. 113503 (2014).

    13. 13. Pushpapraj Singh, Geng-Li Chua, Jayaraman Karthik Gopal, Anh Tuan Do and Tony Tae-Hyoung Kim, “Anchor-free NEMS Non-volatile Memory Cell for Harsh Environment Data Storage”, Journal of Micromechanics and Microelectronics, 24, pp. 115007, 2014.

    14. 14. Qingyun Xie, Nan Wang, Chengliang Sun, Andrew B. Randles, Pushpapraj Singh, Xiaolin Zhang, and Yuandong Gu, “Effectiveness of Oxide Trench Array as a Passive Temperature Compensation Structure in AlN-on-Silicon Micromechanical Resonators” Applied Physics Letters, 110, pp. 083501 (2017).

    15. 15. Dhairya Singh Arya, Pushpapraj Singh, “NEMFLASH non-volatile memory device for high-temperature applications” 2018 (Under Review).

    16. 16. Vaibhav Rana, Samaresh Das, Pushpapraj Singh, “Low-cost and reliable nanowire fabrication method for ultrasensitive pressure sensor”, 2018 (Under review).

    17. 17. Sushil Kumar, Saket Saurabh, Pushpapraj Singh, “Sub-0.5 V Molybdenum NEMS Switch with Perfect Electrostatic Force Balance for Harsh Environment Computation” 2018 (Under review).

    18. 18. Pushpapraj Singh, Sushil Kumar, “Laser assisted stress reduction in metal microstructures for assisting post CMOS-MEMS memory integration” 2018 (Under review).

    Conferences

    1. 1. Pushpapraj Singh, Jianmin Miao, “Piezotransistor-Embedded Microcantilever Platform for Strain Sensing Applications”, IEEE Sensors, 1-4 November 2010, Hawaii USA.

    2. 2. Pushpapraj Singh, Jianmin Miao, Lichun Shao, Rama Krishna Kotlanka, Woo Tae Park, Dim-Lee Kwong, “Impact of channel aspect ratio on the sensitivity of transistor-integrated microcantilever biosensor” , ICCMB2, 2-4 August 2010, Singapore.

    3. 3. Li-Shiah Lim, Woo-Tae Park, Liang Lou, Pushpapraj Singh, Han-Hua Feng, “Design, Fabrication and Characterization of ultra-miniature piezoresistive Pressure Sensors for medical implants” ICMAT, 26 Jun-1 Jul 2011, Singapore.

    4. 4. Pushpapraj Singh, Jianmin Miao, Woo Tae Park, Dim-Lee Kwong , “Ultrasensitive Pressure Sensor Based on Gate- All-Around Nanowire FET”, Transducers, 5- 9 June 2011, Beijing China.

    5. 5. Pushpapraj Singh, Jianmin Miao, Woo-Tae Park, Lim Li Shiah, Dim-Lee Kwong, “Piezoresistance Effects in Junctionless Nanowire Transistors” ICMAT, 26 Jun-1 Jul 2011, Singapore.

    6. 6. Pushpapraj Singh, Woo-Tae Park, Han-Hua Feng, “Battery less MEMS Flow Sensor within Prosthetic Vascular Graft”, DSR, 3- 5 August 2011, Singapore.

    7. 7. Pushpapraj Singh, Jianmin Miao, Woo-Tae Park, Dim-Lee Kwong, “Piezoresistance and low frequency noise study in junctionless nanowire FET” IEEE MEMS, 29 Jan-2 Feb 2012, Paris France.

    8. 8. Pushpapraj Singh, Chua Geng Li, Julius Tsai Ming Lin, “Design and characterization of tantalum-nitride switch for one-time-programmable memory applications”, NVMTS, 31 Oct- 2 Nov 2012, Singapore

    9. 9. Anh Tuan Do, Karthik G. Jayaraman, Vincent Pott, Geng Li Chua, Pushpapraj Singh, and Tony T. Kim, “An improved Read/Write Scheme for Anchorless NEMS-CMOS Non-volatile Memory” ISCAS, 19 - 23 May 2013, Beijing China.

    10. 10. Chua Geng Li, Pushpapraj Singh, Julius Tsai Ming Lin, Navab Singh “Contact stiction of three terminal MEMS cantilever device for non-volatile memory applications” ICMAT, 30 June- 5 Jul 2013, Singapore.

    11. 11. Pushpapraj Singh, Chua Geng Li, Julius Tsai Ming Lin, “Laser assisted metal stress reduction for assisting post CMOS-MEMS memory integration”, ICMAT, 30 June- 5 Jul 2013, Singapore.

    12. 12. Jayaraman Karthik Gopal, Pushpapraj Singh, “Array implementation of a cantilever-based non-volatile memory using vibrational reset procedure”, ESSCIRC, 16-20 Sep 2013, Bucharest, Romania.

    13. 13. Ilker Ender Ocak, Cheam Daw Don, Sanchitha Nirodha Fernando, Angel Lin Tsu-Hui, Pushpapraj Singh, Navab Singh, Alex Gu Yuandong and Dim Lee Kwong, “A Monolithic 9DOF Capacitive Inertial MEMS Platform”, IEDM , 15-17 Dec, 2014, San Francisco USA.

    14. 14. Tony Tae-Hyoung Kim, Ngoc Le Ba, Anh Tuan Do, Jayaraman Gopal, Geng Li Chua, Pushpapraj Singh, “Low Power Memory Design for High Temperature in Ruggedized Electronics”, ISOCC, 3-6 Nov 2014, Jeju Korea. )

    15. 15. Chua Geng Li, Pushpapraj Singh, Bo Woon Soon, Navab Singh, “Novel RESET phenomenon for RF MEMS switches”, ICMAT, 28 June-3July, 2015 Singapore.

    16. 16. Pushpapraj Singh, Sanchitha N Fernando, Jinghui XU, Zhipeng DING, “Ultrasensitive Pirani Gauge as Hermiticity Indicator for Sealed MEMS Cavities ”, ICMAT, 28 June-3July, 2015 Singapore.

    17. Neeraj Kumar, Veerendra Dhyani and Samaresh Das, \93Germanium nanocrystals based phodetector for silicon photonics\94, IWPSD 2015 IISC Bangalore ( 07 Dec 2015- 10 Dec 2015) (Poster presentation )

    18. 17. Tan Ee Lim, Pushpapraj Singh, “Ultrasensitive and Miniaturized Tactile Sensors for Medical Applications”, ICMAT, 28 June-3July, 2015 Singapore.

    19. 18. DING Zhipeng, Pushpapraj Singh, Sanchitha N Fernando, Jinghui XU, “Fabrication and Characterization of a hermeticity indicator for MEMS AI-Ge Bonding”, ICMAT, 28 June-3July, 2015 Singapore.

    20. 19. Qingyun Xie, Nan Wang, Chengliang Sun, Andrew B. Randles, Pushpapraj Singh, Xiaolin Zhang and Yuandong Gu, "A Passively Temperature-Compensated Dual-Frequency AlN-on-Silicon Resonator For Accurate Pressure Sensing", IEEE MEMS, 22-26 Jan, 2017 Las Vegas USA.

    21. 20. Qingyun Xie , Chengliang Sun , Nan Wang , Andrew B. Randles , Pushpapraj Singh , Xiaolin Zhang , Yuandong Gu, “An Acoustic Wave Resonant Sensor for Turbine Oil Quality Monitoring”, TICEAS, 21-22 Feb 2017 Singapore.

    22. 21. Vaibhav Rana, K. N. Bhat, Samaresh Das, Pushpapraj Singh, “Low-cost and reliable nanowire fabrication method for ultrasensitive pressure sensor” IEEE Sensors, Oct 29- 1 Nov 2017, Glasgow, Scotland.

    23. 22. Vaibhav Rana, Samaresh Das, Pushpapraj Singh, “Low-cost MoS2 nanowire fabrication method for pressure sensor” IWPSD, Dec 11-15 2017, New Delhi, India.

    24. 23. Akhil K. Ramesh, Pintu Das, Pushpapraj Singh, “Magnetostrictive Sense Layer for MTJ based Ultrasensitive MEMS Pressure Sensor”, IWPSD, Dec 11-15 2017, New Delhi, India.

    25. 24. Dhairya Singh Arya, Sushil Kumar, Mahanth Prasad, Pushpapraj Singh, C. C. Tripathi, “Design, modeling and simulation of square diaphragm based piezoelectric (AlN) mems acoustic sensor for high SPL measurements”, IWPSD, Dec 11-15 2017, New Delhi, India.

    26. 25. Sushil Kumar, Pushpapraj Singh, “Sub-micron gap tuning over side wall for ultra-low voltage MEMS switching application”, IWPSD, Dec 11-15 2017, New Delhi, India.

    27. 26. Sushil Kumar, Pushpapraj Singh, “Low pull-in voltage MEMS switch with side wall gap reduction” IEEE Indicon, Dec 15-17 2017, Roorkee, India (Submitted).

    28. 27. Akhil Ramesh, Pintu Das, Pushpapraj Singh, “ Development of Magnetostrictive Sense Layer for Ultrasensitive Spintronic MEMS Sensor” IEEE INDICON 2018, Dec. 15- 18 , Coimbatore, India (Submitted).

    29. 28. Akhil Ramesh, Pintu Das, Pushpapraj Singh, “ Stress measurement using single layer magnetostrictive thin films for MEMS force sensor” IEEE MEMS 2019, Jan. 27- 31, Seoul, Korea (In preparation).

    30. 29. Dhairya Singh Arya, Pushpapraj Singh, "Design, simulation and fabrication of two electrodes bi-stable MEMS Non Volatile Memory for high-temperature data storage." ICEE, IISC Banglore, India. Dec-2018 (In preparation).

    31. 30. Dhairya Singh Arya, Pushpapraj Singh."Design, simulation and fabrication of NEMFLASH Non Volatile Memory" IEEE MEMS 2019, Jan. 27- 31, Seoul, Korea (In preparation).

    32. 31. Vaibhav Rana, Samaresh Das, Pushpapraj Singh, “Low-cost  MoS2 piezoresistive wire for ultrasensitive MEMS pressure sensor” IEEE MEMS, 2019, Jan 27- 31, Seoul, Korea (In preparation)

    33. 32. Sushil Kumar, Pushpapraj Singh, "Steer Electrostatic MEMS switch with a new symmetric spacer-stack for rugged electronics (I.C.) applications" IEEE MEMS, Jan 27-31 2019, Seoul, Korea (In preparation).

    Patents

    1. India - Provisional Patent Application No.: 201711029361, Dated: August 18, 2017, " CANTILEVER SENSOR DEVICE BASED ON SUSPENDED METAL OXIDE AND SILICON NANOSTRUCTURES AND FABRICATION METHOD THEREOF " by SaakshiDhanekar, Priyanka Dwivedi, , Pushpapraj Singh, Samaresh Das.

    2. Singapore- Provisional Patent Application No.: PCT/SG2016/050606, Dated : December 15, 2016, “Method And Deployable Multi-Spine Apparatus For Catheter-Based Renal Denervation” CHENG, Ming-Yuan, ZHANG, Songsong, GU, Alex Yuandong, RANDLES, Andrew Benson, TAN, Ee Lim, SINGH, Pushpapraj, TAN, Kwan Ling, CHEN, Weiguo, LIM, Ruiqi, DAMALERIO, Ramona.