A primary motivation of our research is the monitoring of physical, physiological, and biochemical parameters - in any environment and without activity restriction and behaviour modification - through using miniaturised, wireless Body Sensor Networks (BSN). Key research issues that are currently being addressed include novel sensor designs, ultra-low power microprocessor and wireless platforms, energy scavenging, biocompatibility, system integration and miniaturisation, processing-on-node technologies combined with novel ASIC design, autonomic sensor networks and light-weight communication protocols. Our research is aimed at addressing the future needs of life-long health, wellbeing and healthcare, particularly those related to demographic changes associated with an ageing population and patients with chronic illnesses. This research theme is therefore closely aligned with the IGHI’s vision of providing safe, effective and accessible technologies for both developed and developing countries.

Some of our latest works were exhibited at the 2015 Royal Society Summer Science Exhibition.


Citation

BibTex format

@article{He:2019:10.1038/s41467-019-12286-3,
author = {He, C and Chang, J and Hu, Q and Wang, J and Antonello, J and He, H and Liu, S and Lin, J and Dai, B and Elson, DS and Xi, P and Ma, H and Booth, MJ},
doi = {10.1038/s41467-019-12286-3},
journal = {Nature Communications},
pages = {1--8},
title = {Complex vectorial optics through gradient index lens cascades},
url = {http://dx.doi.org/10.1038/s41467-019-12286-3},
volume = {10},
year = {2019}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Graded index (GRIN) lenses are commonly used for compact imaging systems. It is not widely appreciated that the ion-exchange process that creates the rotationally symmetric GRIN lens index profile also causes a symmetric birefringence variation. This property is usually considered a nuisance, such that manufacturing processes are optimized to keep it to a minimum. Here, rather than avoiding this birefringence, we understand and harness it by using GRIN lenses in cascade with other optical components to enable extra functionality in commonplace GRIN lens systems. We show how birefringence in the GRIN cascades can generate vector vortex beams and foci, and how it can be used advantageously to improve axial resolution. Through using the birefringence for analysis, we show that the GRIN cascades form the basis of a new single-shot Müller matrix polarimeter with potential for endoscopic label-free cancer diagnostics. The versatility of these cascades opens up new technological directions.
AU - He,C
AU - Chang,J
AU - Hu,Q
AU - Wang,J
AU - Antonello,J
AU - He,H
AU - Liu,S
AU - Lin,J
AU - Dai,B
AU - Elson,DS
AU - Xi,P
AU - Ma,H
AU - Booth,MJ
DO - 10.1038/s41467-019-12286-3
EP - 8
PY - 2019///
SN - 2041-1723
SP - 1
TI - Complex vectorial optics through gradient index lens cascades
T2 - Nature Communications
UR - http://dx.doi.org/10.1038/s41467-019-12286-3
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000486566400004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - https://www.nature.com/articles/s41467-019-12286-3
UR - http://hdl.handle.net/10044/1/74025
VL - 10
ER -