Josh Nixon

Profile

I am a PhD student specializing in the use of on-chip Terahertz (THz) spectroscopy techniques for medical imaging.

In my research is composed primarily of 3 stages of testing- simulation, fabrication, and experimentation. For simulation, I apply Ansys’ High Frequency Structure Simulator (HFSS); For fabrication, I utilise nanofabrication techniques such as annealing, photolithography (maskless and masked designed with Klayout), thermal deposition, etching (including hydroflouric acid), and packaging techniques such as wire bonding and soldering. Finally, for experimentation, I am trained in the use of a Menlo laser system for asynchronous optical sampling (ASOPS) of these on-chip THz devices.

Once the fabrication steps and spectroscopic response of these chips are optimised, the project aims to integrate these fabricated chips into a robotically controlled endoscopic probe-head for the purpose of colon-cancer detection.

Research interests

• Terahertz imaging
• Finite-element simulation software
• Nanofabrication
• Optical sampling methods
• Waveguides
• Resonator/Filter geometries

 

Qualifications

• MPhys