CORE FACULTY

Education
• PhD, 1993, Cornell University, Ithaca, NY, USA.
• MS, 1987, University of Arizona, Tucson, USA.
• BTech (Hons), 1985, I.I.T. Kharagpur, India.

Experience
• Professor, IISc., Bangalore, 2008 – Present.
• Associate Professor, IISc, Bangalore, 2002 – 2008.
• Assistant Professor, IISc, Bangalore, 1996 – 2002.
• Lecturer, Cornell University, USA, 1994 – 1996.

Research Interests
• Inertial, acoustic and ultrasonic MEMS transducers
• Piezo-MEMS and energy harvesting
• Mechanobiology of micro and nanoscale natural (insect) transducers
• Nanoscale patterning and material transport using electromigration

Research Area
MEMS/NEMS, MEMS & NEMS Sensors, Vibratory Mechanobiology, Materials for MEMS/NEMS, Fundamental research in NEMS/MEMS, Transduction-targeted material development

Recent Publications

• Kumar, V., Tiwari, S., Pillai, G., Pratap, R., & Chandorkar, S. A. (2024). Synchronized Opto-Electro-Mechanical Measurements for Estimation of Energy Dissipation in Thin-Film-Piezoelectric-on-Substrate MEMS/NEMS Devices. Journal of Microelectromechanical Systems.
  https://ieeexplore.ieee.org/abstract/document/10705914

• Kumar, P., Sahana, D., Chandrashekar, L. N., Jeyaseelan, A., Nayak, M. M., Pratap, R., & Pillai, G. (2023). Ultrasensitive pressure sensor based on an integrated circular piezoelectric MEMS resonator and diaphragm Structure. IEEE Sensors Letters.
  https://ieeexplore.ieee.org/abstract/document/10288036

• Paramanick, A., Roy, K., Paul, S., Kumar, A., Ashok, A., Pratap, R., & Singh, M. S. (2024). Seeing Beyond: The Future of Photoacoustic Imaging with Single-element, Low-frequency Thin-film PMUT. IEEE Sensors Letters.
  https://ieeexplore.ieee.org/abstract/document/10413557

• Gupta, N., Johari, R., Alex, A. K., Singh, R., & Pratap, R. (2024). Nonlinear interaction of quadruple Gaussian laser beams with collisional plasmas with nonlinear absorption: self focusing and self phase modulation. Journal of Optics, 1-12.
  https://link.springer.com/article/10.1007/s12596-024-01780-7

• Roy, K., Kumar, A., Shastri, V., Munjal, I., Kalyan, K., Ashok, A., … & Pratap, R. (2024). Pmut-powered photoacoustic detection: Revolutionizing microfluidic concentration measurements. IEEE Transactions on Instrumentation and Measurement.
  https://ieeexplore.ieee.org/abstract/document/10538249

Key Publications

• Sriramdas, R., Chiplunkar, S., Cuduvally, R. M., & Pratap, R. (2015). Performance enhancement of piezoelectric energy harvesters using multilayer and multistep beam configurations. IEEE Sensors Journal, 15(6), 3338-3348.
  https://ieeexplore.ieee.org/abstract/document/7001612

• Kulkarni, S. S., & Pratap, R. (2000). Studies on the dynamics of a supercavitating projectile. Applied Mathematical Modelling, 24(2), 113-129.
  https://doi.org/10.1016/S0307-904X(99)00028-1

• Pandey, A. K., & Pratap, R. (2007). Effect of flexural modes on squeeze film damping in MEMS cantilever resonators. Journal of Micromechanics and Microengineering, 17(12), 2475.
  https://iopscience.iop.org/article/10.1088/0960-1317/17/12/013/meta

Patents
Patents Granted – 7                Patents Pending – 8

• Patent No. 205188, Date: 22/3/2007 Title: A MEMS based electrostatic acoustic transducer and method of sensing sound pressure. Organization: Indian Institute of Science and Cranes Software International Limited. Inventors: Dr. Rudra Pratap and Shishir Kumar.

• Patent No. US 2011/0023632 A1, Date: 3/2/2011 Title: A sub-threshold elastic deflection FET sensor for sensing pressure/force, a method and system thereof. Organization: Indian Institute of Science Inventors: Charanjeet Malhi Kaur, Navakanta Bhat, Rudra Pratap.

• Patent No. US 2011/0050201 A1, Date: 3/3/2011 Title: A sub-threshold forced plate FET sensor for sensing inertial displacements, a method and system thereof. Organization: Indian Institute of Science Inventors: Thejas, Navakanta Bhat, Rudra Pratap.

• Patent No. 20110031986 A1, Date: 10/2/2011 Title: A sub-threshold CAPFET sensor for sensing analyte, a method and system thereof. Organization: Indian Institute of Science Inventors: Balaji Jayaramana, Navakanta Bhat, Rudra Pratap, Shivashankar S A.

• Title: A Pheromone Detector Indian Patent Number: 307528, Date: 17/10/2014 Organization: Indian Institute of Science Inventors: Santanu Bhattacharya, Rudra Pratap, Parikshit Moitra, Deepa Bhagat.

• Title: Optical Nanosensor for Early Stage Detection of Bactocera Oleae Infestation Indian Patent Number: 316092, Date: 16/07/2019 Organization: Indian Institute of Science Inventors: Santanu Bhattacharya, Rudra Pratap, Parikshit Moitra, Deepa Bhagat.

• Title: Sensors based on crumpled sheets of reduced Graphene oxide and a method thereof Indian Patent Application Number: 201641037892 A, Date: 31/08/2018 Organization: Indian Institute of Science Inventors: Subhajit Kundu, S. Rammohan, Kazi Rafsanjani Amin, Avik Bid, Rudra Pratap, N. Ravishankar

• Title: A Device To Determine Viscosity of a Fluid and a Method Thereof. Indian Patent Application Number: 202041024905, Date:13/06/2020 Organization: Indian Institute of Science Inventors: Sudhanshu Tiwari, Rudra Pratap.

• Title: An Electrochemical Lithography Tool for High Throughput Pattern Generation Indian Patent Application Number: 202041016120, Date:14/04/2020 Organization: Indian Institute of Science Inventors: Sumit Kumar, Ebinesh Abraham, Praveen Kumar, Rudra Pratap.

• Title: Process for microfabricating micoelectromechanical systems devices Indian Patent Application Number: 201841025729, Date:10/07/2018 Organization: Indian Institute of Science Inventors: Jayaprakash Reddy, Rudra Pratap.

• Title: A Micro-Scale actuator Indian Patent Application Number: 201741020853 Organization: Indian Institute of Science Inventors: J.P. Reddy, R. Pratap, M. M. Nayak, P. P. Mohanlal, Joji J. Chaman, Pradeep K.

• Title: MEMS Speaker Indian Patent Application Number: 201741010624 Organization: Indian Institute of Science Inventors: Vamsy Godthi, Jayaprakash Reddy, Rudra Pratap

• Title: Method and Apparatus for Detecting Muscular Disorders Based on Vibration Signature of Muscle Cells Indian Patent Application Number: 4161/CHE/2015 Organization: Indian Institute of Science Inventors: Venkatesh K. P. R., Mohan Jayaram, Upendra Nongthomba, Rudra Pratap.

• Title: A system and method for pattern generation on a substrate by electromigration. Indian Patent Application Number: 5652/CHE/2013 Organization: Indian Institute of Science Inventors: Santanu Talukder, Praveen Kumar, Rudra Pratap.

• Title: Enhancement of sensitivity of metallic piezoresistor using controlled electromigration. Indian Patent Application Number: 3730/CHE/2010 Organization: Indian Institute of Science Inventors: Mohanasundaram, Arindam Ghosh, Rudra Pratap