Body Dust: Modeling of NanoAntennas for Electromagnetic Remote Powering
**** Master Project ****
Imagine an advance in technology that could enable the development of fully drinkable and autonomous bio-electronic CMOS sensors in the form of dust particles, capable of identifying the source of a disease by targeting a specific region in organs and tissue such as a tumor mass and automatically sending diagnostic information wirelessly outside the body. We call this swarm of sensing dust particles ‘Body Dust’. A diagnostic system in the form of Body Dust would need to be small enough to support free circulation in human tissues, which requires a total size of less than 10 μm3, in order to mimic the typical sizes of a blood cell (e.g., white cells have the diameter around 30 μm). Whilst with present state-of-the-art in CMOS technology, this requirement in terms of size is currently un-feasible, recent research has advanced technology such that we can begin to work towards such an approach. Therefore, we propose here to investigate the current limits of CMOS technology as well as the challenges related to the development of such a system.
Concept of the project showing the design of a CMOS die with an electrochemical sensor on top and powering antennas realised by using metal layers
Towards the above-mentioned goal, this Master project aims to investigate the possibility for remote powering such a system with an electromagnetic powering from outside of the body. The target of the project is to investigate the feasibility of a remote power-data by electromagnetic-link for a drinkable CMOS diagnostic system, by means of backscattering techniques that can also be exploited for data transmission. Starting from the state-of-the-art analysis in RF remote power and data links, the analysis should highlight the trade-offs of such a system and provide the main specifications, represented by the transferred power and its efficiency, the area occupation, the link constraints in range and frequency for a future prototype implementation.
Interest, Motivation, and Commitment to the project
Tracking cancer-cell development with “drinkable” electronic sensors, EPFL News: https://actu.epfl.ch/news/tracking-cancer-cell-development-with-drinkable-el/
Yasha Karimi, Adam Khalifa, Webert Montlouis, Milutin Stanacevic, and Ralph Etienne-Cummings, Coil Array Design for Maximizing Wireless Power Transfer to sub-mm Sized Implantable Devices, Proceedings of the International IEEE Conference BioCAS 2017