My Primary Interests are in Analog, Mixed-Signal, RF and Digital VLSI Design for Sensing, Clocking, Analytics and Communication for Biomedical Applications. My broader interests include Device-Circuit co-design, Computer Architecture and Algorithms, Internet of Things, Bio-Sensors and Bio-MEMS.
Projects I’m Currently Involved in:
Wearables and Implants for Internet of Bodies
This work focuses on the design and development of Wearables and Implants for the Internet of Bodies (IoB).
Center for Internet of Bodies: Center for IoB is a multi-university center that focuses on the research on sensing, analytics, communication, actuation, powering and harvesting around the human body.
Our vision for IoB is Explained in this Annual Review of Biomedical Engineering (2023 Impact Factor: 11.324) Article, where the challenges and opportunities in this research area are articulated, in terms of sensing, processing, communication, powering and security of IoB nodes. The specific use-cases of Human-Body Communication (HBC) are also explained for IoB, as a differentiating factor from Wireless Body-Area Network (WBAN).
More details on IoB can be found in this infographic and this blog post.
Collaborators: Prof. Shreyas Sen, Purdue University and Prof. Adam Khalifa, University of Florida
Publications: Nature Electronics, 2023; Annual Reviews of Biomedical Engineering, 2023
Timing is Everything: Ultra-Stable Temperature and Aging Compensated Clock
This work focuses on modeling, simulation, design, and measurements of extremely stable (<1us error in a week) clocks in a wearable form-factor.
Further details can be found in this blog post.
Collaborators: Prof. Roozbeh Tabrizian, University of Florida
Publications: MEMS, 2024;
Internet of the Brain
This work focuses on modeling, simulation, design, and measurements of brain implants for high-speed data transfer.
Collaborators: Prof. Shreyas Sen, Purdue University and Prof. Adam Khalifa, University of Florida
Publications: Nature Electronics, 2023;
Motor Function Analysis and Prediction from EEG and ECoG Signals
This work focuses on the analysis and prediction of motor functions from neural signals.
We are working on creating portable inferencing modules for Motor Function Prediction from EEG/ECoG.
Collaborators: Prof. Adam Khalifa, University of Florida
PAST Projects:
Capacitive/Galvanic Human Body Communication
This work focuses on modeling, simulation, design and measurements of human body channel as a medium for electrical signal propagation.
Collaborators: Prof. Shreyas Sen, Purdue University
Publications:
ISSCC 2022; ESSCIRC 2022; IMS 2022; VLSI 2021; RFIC 2020; D&T 2019; CICC 2021; IMS 2021; JSSC 2019; TBME 2019; CICC 2018; BioCAS 2018; EMBC 2018; VLSID 2018;
Figure Source: D&T2019;
Low-Power, High-Resolution Time-Based Sensing
This work focuses on utilizing the “availability of time” for low-frequency applications (such as radiation/ temperature/ humidity sensing) for high-resolution (~18-bit) sensing using time-based ADC architectures.
Collaborators: Prof. Shreyas Sen and Prof. Dimitrios Peroulis, Purdue University; Sean Scott and Daniel Valentino, Landauer, Inc.
Publications:
JSSC 2020; CICC 2019 (Best Paper Award); D&T 2019; Sensors 2019;
Figure Source: D&T2019;
Securing IoT Networks through RF-PUF
This work focuses on augmenting traditional radio authentication mechanisms with RF-PUF. which embraces inherent device non-idealities for identification.
Collaborators: Prof. Shreyas Sen, Purdue University
Publications:
IoT-J 2019; IMS 2022; IMS 2021; ISCAS 2021; HOST 2018 (Best Student Poster Award -3rd);
Figure Source: IoT-J 2019;
In-Sensor Analytics, Collaborative Intelligence and Energy-Efficient IoT Networks
This work focuses on reducing overall IoT system power through different optimization Techniques.
Collaborators: Prof. Shreyas Sen, Purdue University; Prof. Arijit Raychowdhury, Georgia Tech; Prof. Ningyuan Cao, University of Notre Dame
Publications:
IoT-J 2020, CICC 2020, VLSI 2020, JSSC 2022, D&T 2019, JSSC 2022, CICC 2021, IoT-J 2022, MWCL 2021, ASP-DAC 2021, TVLSI 2019, JBHI 2018, JETCAS 2018, TNANO 2017, ICRC 2017
Figure Source: D&T 2019
Securing the Internet of Body
This work focuses on Securing the Internet of Body by containing the communication signals within the body itself, along with providing hardware security to cryptographic cores during encryption.
Collaborators: Prof. Shreyas Sen, Purdue University
Publications:
ISSCC 2020, JSSC 2020, Sci. Rep. 2019 (YouTube Link), (IEEE Spectrum Coverage), HOST 2019 (Best Student Paper Award: co-authored)
Figure Source: Sci. Rep. 2019
High Frequency Oscillator Design using CMOS-MEMS on-chip resonators
This work focuses on design and measurements of high frequency oscillators using CMOS-MEMS on-chip resonators.
Collaborators: Prof. Shreyas Sen and Prof. Dana Weinstein, Purdue University
Publications:
TCAS-II 2020