Fiber-Tip
Polymer Microcantilever for Fast and Highly
Sensitive Hydrogen Measurement
Posted on 2020-06-17 - 20:14
Hydrogen
as an antioxidant gas has been widely used in the medical
and biological fields for preventing cancer or treating inflammation.
However, controlling the hydrogen concentration is crucial for practical
use due to its explosive property when its volume concentration in
air reaches the explosive limit (4%). In this work, a polymer-based
microcantilever (μ-cantilever) hydrogen sensor located at the
end of a fiber tip is proposed to detect the hydrogen concentration
in medical and biological applications. The proposed sensor was developed
using femtosecond laser-induced two-photon polymerization (TPP) to
print the polymer μ-cantilever and magnetron sputtering to coat
a palladium (Pd) film on the upper surface of the μ-cantilever.
Such a device exhibits a high sensitivity, roughly −2 nm %–1 when the hydrogen concentration rises from 0% to
4.5% (v/v) and a short response time, around 13.5 s at 4% (v/v), making
it suitable for medical and environmental applications. In addition
to providing an ultracompact optical solution for fast and highly
sensitive hydrogen measurement, the polymer μ-cantilever fiber
sensor can be used for diverse medical and biological sensing applications
by replacing Pd with other functional materials.
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Xiong, Cong; Zhou, Jiangtao; Liao, Changrui; Zhu, Meng; Wang, Ying; Liu, Shen; et al. (2020). Fiber-Tip
Polymer Microcantilever for Fast and Highly
Sensitive Hydrogen Measurement. ACS Publications. Collection. https://doi.org/10.1021/acsami.0c06179
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AUTHORS (15)
CX
Cong Xiong
JZ
Jiangtao Zhou
CL
Changrui Liao
MZ
Meng Zhu
YW
Ying Wang
SL
Shen Liu
CL
Chi Li
YZ
Yunfang Zhang
YZ
Yuanyuan Zhao
ZG
Zongsong Gan
LV
Leonardo Venturelli
SK
Sandor Kasas
XZ
Xuming Zhang
GD
Giovanni Dietler
YW
Yiping Wang