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{Barbot:2020:10.1126/sciadv.aba5660,
author = {Barbot, A and Power, M and Seichepine, F and Yang, G-Z},
doi = {10.1126/sciadv.aba5660},
journal = {Science Advances},
title = {Liquid seal for compact micro-piston actuation at capillary tip},
url = {http://dx.doi.org/10.1126/sciadv.aba5660},
volume = {6},
year = {2020}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Actuators at the tip of a sub-millimetric catheter could facilitatein vivointer-ventional procedures at cellular scales by enabling tissue biopsy, manipulationor supporting active micro-optics. However the dominance of frictional forcesat this scale makes classical mechanism problematic. In this paper, we reportthe design of a micro-scale piston, with a maximum dimension of 150μm,fabricated with two-photon lithography onto the tip of 140μm diameter cap-illaries. An oil drop method is used to create a seal between the piston andthe cylinder which prevents any leakage below 185 mbar pressure differencewhile providing lubricated friction between moving parts. This piston gener-ates forces that increase linearly with pressure up to 130μN without breakingthe liquid seal. The practical value of the design is demonstrated with its inte-gration with a micro-gripper that can grasp, move and release 50μm micro-spheres. Such a mechanism opens the way to micron-size catheter actuation.
AU - Barbot,A
AU - Power,M
AU - Seichepine,F
AU - Yang,G-Z
DO - 10.1126/sciadv.aba5660
PY - 2020///
SN - 2375-2548
TI - Liquid seal for compact micro-piston actuation at capillary tip
T2 - Science Advances
UR - http://dx.doi.org/10.1126/sciadv.aba5660
UR - http://hdl.handle.net/10044/1/79005
VL - 6
ER -