Document Detail

NO Gas sensor of PEDOT: PSS nanowires by using direct patterning DPN.
MedLine Citation:
PMID:  19163389     Owner:  NLM     Status:  MEDLINE    
Nitric oxide (NO) detection is a critical issue for environmental safety and medical diagnosis due reasons with regard to the toxic properties for human body and metabolic index for respiratory disease, respectively. Development of gas sensor with high sensitivity is very important because the concentration of NO gas in the environment and respiratory tract is extremely low, therefore not readily detectable. The material with nanostructure can improve the sensitivity of sensor owning to surface effect and size effect. Herein, we developed a new type of gaseous nanosensor assembled by 34 nanowires of conducting polymer, PEDOT: PSS. The nanowires were fabricated by dip pen nanolithography (DPN) with the length of 55 um and diameter of 300 nm between golden wires. The NO gas measurement is based on chemiresistor based methods. The result of dynamic measurement of NO gas at 100 ppm shows repeatability and stability; the recovery time is 10.4 minutes. Moreover, the lowest concentration of NO gas in static measurement is 10ppm at 80 C, which also shows the ability sensing at low temperature.
Hui-Hisn Lu; Chia-Yu Lin; Yueh-Yuan Fang; Tzu-Chien Hsiao; Kuo-Chuan Ho; Dongfang Yang; Chii-Wann Lin
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference     Volume:  2008     ISSN:  1557-170X     ISO Abbreviation:  Conf Proc IEEE Eng Med Biol Soc     Publication Date:  2008  
Date Detail:
Created Date:  2009-02-16     Completed Date:  2009-04-28     Revised Date:  2014-08-21    
Medline Journal Info:
Nlm Unique ID:  101243413     Medline TA:  Conf Proc IEEE Eng Med Biol Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3208-11     Citation Subset:  IM    
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MeSH Terms
Biosensing Techniques
Microscopy, Atomic Force / methods*
Microscopy, Electron, Scanning
Molecular Conformation
Nanotechnology / methods*
Nanowires / chemistry*
Nitric Oxide / chemistry*
Phase Transition
Time Factors
Reg. No./Substance:
0/Gases; 31C4KY9ESH/Nitric Oxide; Z4152N8IUI/Silicon

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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