A Fully Integrated Wireless Flexible Ammonia Sensor Fabricated by Soft Nano-Lithography

ACS Sensors
Ning TangXuexin Duan

Abstract

Flexible ammonia (NH3) sensors based on one-dimensional nanostructures have attracted great attention due to their high flexibility and low power consumption. However, it is still challenging to reliably and cost-effectively fabricate ordered nanostructure-based flexible sensors. Herein, a smartphone-enabled fully integrated system based on a flexible nanowire sensor was developed for real-time NH3 monitoring. Highly aligned, sub-100 nm nanowires on a flexible substrate fabricated by facile and low-cost soft lithography were used as sensitive elements to produce impedance response. The detection signals were sent to a smartphone and displayed on the screen in real time. This nanowire-based sensor exhibited robust flexibility and mechanical durability. Moreover, the integrated NH3 sensing system presented enhanced performance with a detection limit of 100 ppb, as well as high selectivity and reproducibility. The power consumption of the flexible nanowire sensor was as low as 3 μW. By using this system, measurements were carried out to obtain reliable information about the spoilage of foods. This smartphone-enabled integrated system based on a flexible nanowire sensor provided a portable and efficient way to detect NH3 in daily l...Continue Reading

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Citations

Apr 18, 2020·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Qiannan XueXuexin Duan
May 7, 2020·Frontiers in Chemistry·Zhengdi WangMin Wei
May 21, 2020·Frontiers in Chemistry·Chi SongXiaodong Zheng
Apr 11, 2020·Advanced Science·Andreas T GüntnerSotiris E Pratsinis
Aug 14, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Songyue ZhangKaiyong Cai
Feb 24, 2021·ACS Nano·Hossam Haick, Ning Tang
Mar 14, 2021·Nature Nanotechnology·Tianxi Yang, Timothy V Duncan
Nov 28, 2020·Analytical Chemistry·Joshua M ZieglerReginald M Penner
May 28, 2021·ACS Applied Materials & Interfaces·Haining Zhang, Seung Ki Moon
Jul 27, 2021·Advanced Healthcare Materials·Ning TangHossam Haick
Nov 20, 2021·Small·Chun-Chun QuZhi-Zhu He

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