Spring 2020

Deception detection has been of interest to people over many years. Subjects tend to stay reticent when it comes to disclosing sensitive information related to crimes. Deception detection techniques such as polygraph tests based on physiological signals have seen significant developments over the past century. However, controversies regarding the credibility of polygraph techniques remain, with many courts across the world not accepting polygraph results as evidence. Polygraph tests have been widely criticised for their inaccuracies. They have been known to elicit false positive responses from innocent subjects and false-negative reactions from criminals convicted later. Moreover, simple countermeasures have been known to enable a guilty person to pass a polygraph test.

Our focus: To develop a robust deception detection system based on ocular measures and eventually evaluate it in field settings.

Summer 2019

Advisor: Prof. Hossein Hashemi

Phased arrays find applications in 5G communication systems, radars, lidars (autonomous driving) and remote weather sensing. Advancements in fabrication technologies and reduced costs have made phased arrays viable for fabrication on ICs. However, owing to fabrication tolerances, the response of the phase shifters ends up being non-linear.

Borrowing inspiration from phase retrieval techniques, we developed an algorithm that can efficiently calibrate large-scale phased array antennas.

Click here for report.

Summer 2018

Siemens Hyderabad specialises in the production of high voltage disconnectors and earthing switches. The plant manufactures centre break, double break, knee and pantograph type disconnectors.

In the first few weeks of my internship, I keenly observed the assembly processes, interacted with the technicians on the production floor and familiarised myself with the production lines of various disconnectors.

Later, in the subsequent weeks, I discussed my findings from the production floor with the quality assurance (QA) and R&D teams, suggested new ways in achieving quality and uniformity in assembling disconnector components without compromising on the safety of the technicians and incorporated the approved methods into the company's existing standard operating procedure (SOP) documents.

A copy of my report can be found here.

Summer 2017

The Centre for Innovation (CFI) at IIT Madras ran a mentoring program for the students of IIT Palakkad and IIT Tirupati. Here, I worked on 3D printing, under the guidance of Mr. Lokesh Kumar, former head of the 3D printing club at IITM.

• Conducted literature survey on state of the art additive manufacturing processes (stereolithography, digital light processing, fused deposition modelling) and their applications in various fields.
• Learnt and used 3D modelling software and slicing tools: Autodesk Fusion 360, Slic3r.
• Assembled an FDM 3D printer and 3D printed parts for an Arduino controlled robotic gripper arm.
• Used 3D scanners to collect data and analyse real-world artefacts.
• Worked on photogrammetry (generation of 3D models of objects by stitching a set of their 2D images).