Dec. 03, 2019
12:00
-14:00

Bldg. 37, room 202

Lecturer: Ram Prasadh Narayanan

Host: Shlomi Dolev

The research scope is a proof-of-concept for nanorobots in the blood for medical diagnosis and treatment. In the first part of the work, I will discuss the design of energy harvester, detection and actuation modules, which overall, can be defined as the main modules of the nanorobot. Glucose hunger based cancer detectors immobilized on the nano-robot, reduces its electrical resistance when attached to a cancer cell. This mechanism, in turn, allows the electric current to activate a nano-electrical-mechanical (NEM) relay (mechanical transistor) to break a chamber ceiling, exposing a drug identified by the immune system for cell elimination. This concept is in line with the effort to design an autonomous computational nano-robot for in-vivo medical diagnosis and treatment. A collective system of electrical manipulation, bio-detection, and NEM actuation can be visualized as programmability. The concept can also be considered as a step to bridge the gap between theoretical swarming/navigation techniques and computational hardware for plausible implementation of the theory.

I will also detail an implementable model and simulation of an oscillating Carbon Nanotube (CNT) for radio communication in nanorobots. We developed a model to predict the oscillation frequency of the cantilever beam based on its properties, including the device geometry. The primary functional component of the system is the electrically chargeable cantilever beam which oscillates due to its electric charge and discharge, where the discharge happens when the cantilever moves closer to the counter electrode. I will also discuss ways of synchronized communication between the nanorobots and an outside entity. This also definitively means an intra-communication between the nanorobots themselves. Synchronization of nanorobots can be inspired by nature.

The robots can synchronize amongst themselves with a common decided signal. Assuming arbitrary incoherency (initially) for all particles in the medium, it can be shown that coherency improves over time within each subset of particles due to the stronger and mutual influence of one particle on the others. Subsequently, within a finite time-bound, all particles in the system synchronize to a common oscillation frequency, thereby creating a strong coherent pulsating (radio) signal. As the particles are assumed to be identical in geometry and physical properties, the convergence time depends on their distribution, energy, and the way they interact.

 

Summarily, We propose an autonomous non-organic nanorobot design with blood energy harvesting capability, and can detect a biological phenomenon and actuate a response. The nanorobot is designed with computational and communication capability, so that a swarm of these nanorobots act inclusively.