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

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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 http://hdl.handle.net/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

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