A hybrid nanostructure array for gas sensing with ultralow field ionization voltage

被引：12
|
作者：
Liu, Hai [1 ,2 ]
Yadian, Boluo [1 ]
Liu, Qing [1 ]
Gan, Chee Lip [1 ]
Huang, Yizhong [1 ]
机构：
[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore
[2] Shanghai Jiao Tong Univ, Res Inst Micro Nanosci & Technol, Natl Key Lab Micro Nanofabricat Technol, Key Lab Thin Film & Microfabricat,Minist Educ, Shanghai 200240, Peoples R China
来源：
NANOTECHNOLOGY | 2013年 / 24卷 / 17期
关键词：
SELF-ORGANIZATION; NANOWIRES; DISCHARGE; ELECTRODE; DEVICES;
D O I：
10.1088/0957-4484/24/17/175301
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We fabricate a unique hybrid nanostructure array for gas sensing based on the polarization mechanism at the nanoscale. It is shown that with platinum nanocrystallites on the top of each nanoneedle, this array can work at ultralow voltages (less than 10 V) as a field ionization gas sensor. We believe that the polarized platinum brings about a local enhanced electrical field, leading to the direct field ionization of gas molecules, which is confirmed by calculations of the charge accumulation and electrical field distribution.
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页数：5
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