Micro-Nano Innovation

The Micro-Nano Innovation Lab ("mini lab") @Hamlyn investigates and utilises light-matter interactions to develop new intelligent sensing and robotic strategies in micro/nano scales.

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Dr Jang Ah Kim

Research lab info

What we do

The Micro-Nano Innovation Lab ("mini lab") @Hamlyn investigates and utilises light-matter interactions to develop new intelligent sensing and robotic strategies in micro/nano scales. The research involves designing and fabricating micro/nanostructures for diagnostics (e.g. infections, cancer, neurodegenerative diseases) and microscopic therapies/surgeries (e.g. localised drug delivery, novel minimally invasive treatment).

Why it is important?

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How can it benefit patients?

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Dr Jang Ah Kim

Dr Jang Ah Kim

Dr Jang Ah Kim
Lecturer

Citation

BibTex format

@article{Qin:2014:10.1016/j.mseb.2014.01.014,
author = {Qin, H and Xu, Y and Kim, J and Hwang, T and Kim, T},
doi = {10.1016/j.mseb.2014.01.014},
journal = {Materials Science and Engineering: B},
pages = {72--79},
title = {The effect of structure on the photoactivity of a graphene/TiO<inf>2</inf> composite},
url = {http://dx.doi.org/10.1016/j.mseb.2014.01.014},
volume = {184},
year = {2014}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Graphene/TiO2 composites have been investigated as promising novel photoactive materials. Graphene can slow the recombination of electron-hole pairs and act as a strong electron-collector in the graphene/TiO2 composite system. We designed and prepared four different structures of graphene/TiO2 composite film by chemical vapor deposition (CVD) and aerosol technique. The structure of the graphene/TiO2 composite had a significant effect on the photoactive properties, including the photocurrent and resistance under UV illumination. For the different composite structures, the presence of oxygen and water molecules, as well as the photo-generated electron collection efficiency, were the key factors that affect the photoactive properties. More importantly, the composite structure was a decisive factor for the stability of photocurrent and resistance. The composite of reduced graphene oxide (RGO) and TiO2 with irregularly stacked structure had a higher and stable photoresponse. This study could provide a basis for the structural design of photoelectrical devices based on graphene/TiO2. © 2014 Elsevier B.V. All rights reserved.
AU  - Qin,H
AU  - Xu,Y
AU  - Kim,J
AU  - Hwang,T
AU  - Kim,T
DO  - 10.1016/j.mseb.2014.01.014
EP  - 79
PY  - 2014///
SN  - 0921-5107
SP  - 72
TI  - The effect of structure on the photoactivity of a graphene/TiO<inf>2</inf> composite
T2  - Materials Science and Engineering: B
UR  - http://dx.doi.org/10.1016/j.mseb.2014.01.014
VL  - 184
ER  -
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