PHEMA functionalization of gold nanoparticles for vapor sensing: Chemi-resistance, chemi-capacitance and chemi-impedance

Tang, J; Skotadis, E; Stathopoulos, S; Roussi, V; Tsouti, V; Tsoukalas, D

dc.contributor.author	Tang, J	en
dc.contributor.author	Skotadis, E	en
dc.contributor.author	Stathopoulos, S	en
dc.contributor.author	Roussi, V	en
dc.contributor.author	Tsouti, V	en
dc.contributor.author	Tsoukalas, D	en
dc.date.accessioned	2014-03-01T02:53:59Z
dc.date.available	2014-03-01T02:53:59Z
dc.date.issued	2012	en
dc.identifier.issn	09254005	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36519
dc.subject	Chemi-capacitance	en
dc.subject	Chemi-impedance	en
dc.subject	Chemi-resistance	en
dc.subject	Chemical sensor	en
dc.subject	Gold nanoparticles	en
dc.subject	Ink-jet printing	en
dc.subject	PHEMA	en
dc.subject.other	Chemi-capacitance	en
dc.subject.other	Chemi-impedance	en
dc.subject.other	Chemi-resistance	en
dc.subject.other	Electrode spacing	en
dc.subject.other	Functionalizations	en
dc.subject.other	Gold Nanoparticles	en
dc.subject.other	Ink-jet	en
dc.subject.other	Inter-digitated electrodes	en
dc.subject.other	Key design parameters	en
dc.subject.other	Nanoparticle sizes	en
dc.subject.other	Oxidized silicon substrates	en
dc.subject.other	Poly(2-hydroxyethyl methacrylate)	en
dc.subject.other	Sensing response	en
dc.subject.other	Two-step process	en
dc.subject.other	Vapor sensing	en
dc.subject.other	Capacitance	en
dc.subject.other	Chemical sensors	en
dc.subject.other	Ethanol	en
dc.subject.other	Fabrication	en
dc.subject.other	Ink jet printing	en
dc.subject.other	Metal nanoparticles	en
dc.subject.other	Silicon oxides	en
dc.subject.other	Vapors	en
dc.subject.other	PHEMA	en
dc.title	PHEMA functionalization of gold nanoparticles for vapor sensing: Chemi-resistance, chemi-capacitance and chemi-impedance	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1016/j.snb.2011.03.001	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.snb.2011.03.001	en
heal.publicationDate	2012	en
heal.abstract	A chemical sensor fabricated from gold nanoparticles and poly(2-hydroxyethyl methacrylate) (PHEMA) is presented and its chemi-resistive, chemi-capacitive and chemi-impedance performance is investigated. Detection of humidity and ethanol in the range of 2000-20,000 ppm has been made possible in all the above cases. The sensor was fabricated following a two step process utilizing ink-jet printing to deliver both nanoparticles and PHEMA on oxidized silicon substrates: first a layer of nanoparticles has been delivered on top of gold interdigitated electrodes followed by the successive deposition of PHEMA polymer. By controlling several key design parameters such as nanoparticle size, number of ink-jet printed gold nanoparticles and electrode spacing, the fabrication of chemical sensors with different sensing response and linearity is possible. © 2011 Elsevier B.V.	en
heal.journalName	Sensors and Actuators, B: Chemical	en
dc.identifier.doi	10.1016/j.snb.2011.03.001	en
dc.identifier.volume	170	en
dc.identifier.spage	129	en
dc.identifier.epage	136	en