Inkjet-printed gold nanoparticle chemiresistors: Influence of film morphology and ionic strength on the detection of organics dissolved in aqueous solution

Chow, Edith; Herrmann, Jan; Barton, Christopher S.; Raguse, Burkhard; Wieczorek, Lech

doi:10.1016/j.aca.2008.10.070

Cited by 70 publications

(60 citation statements)

References 35 publications

(43 reference statements)

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“…Following pretreatment of the glass microscope slides with 3-mercaptopropyltriethoxysilane, approximately 2 nL of a 1% w/v DMAP-functionalised gold nanoparticles and 4% v/v N-methyl-2-pyrrolidone solution was inkjet-printed using an Autodrop printing system (Microdrop Technologies, Germany) [30] onto each of the interdigitated electrodes. After drying of the nanoparticle films, the glass microscope slide was then exposed to 1-hexanethiol (1 mM) in acetonitrile for 2 hours resulting in the formation of 1-hexanethiol-functionalised gold nanoparticle films (Figure 2 a).…”

Section: Device Fabricationmentioning

confidence: 99%

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Influence of Gold Nanoparticle Film Porosity on the Chemiresistive Sensing Performance

et al. 2013

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The porosity of 1-hexanethiol-functionalised gold nanoparticle films was assessed and utilised as chemiresistor sensors. Electrochemical capacitance measurements showed that the accessibility of electrolytes of different ionic strengths into the pores depended on the thickness of the electric double layer formed. A large variation in capacitance was measured in 0.01-1000 mM NaClO 4 , implying a wide pore size distribution. The change in morphology of the nanoparticle films upon storage in air, water and ethanol for two weeks was investigated. There was a significant decrease in the electrochemical capacitance at high electrolyte concentrations for the ethanol-stored films compared to the freshly-prepared films suggesting a decrease in the number of small pores of radii in the range of 0.3-3 nm. This was further supported by optical topographical measurements where a decrease in the thickness of ethanolstored films was observed relative to the freshly-prepared films. The porous nature of the nanoparticle films was found to have an effect on the chemical sensing behaviour. When used as chemiresistor sensors, for the detection of heptane in water, the ethanol-stored films provided larger resistance changes and longer response times. This suggests that the more densely packed ethanol-stored films provided more sites that enabled film swelling, and that diffusion of the analyte occurred through the narrower water-filled pores. This demonstrates the effect of different storage conditions on film morphology and subsequently sensor response.

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Section: Device Fabricationmentioning

confidence: 99%

“…From the perspective of chemical sensing, we are interested in determining the porosity of gold nanoparticle films that are used as chemiresistive materials in liquids [11,13,[30][31][32][33][34][35][36]. The assembly of multilayered gold nanoparticles produces a disordered porous film [37].…”

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Influence of Gold Nanoparticle Film Porosity on the Chemiresistive Sensing Performance

et al. 2013

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“…[ 5 ] The adoption of printing methods in widespread manufacturing of printed electronics requires the following methods to be possible: 1) deposition of materials in addressable locations; 2) printing over a variety of materials, in particular those incompatible with standard lithographic processes (e.g., organic materials); 3) fl exibility of pattern design; and 4) patterning large areas at low costs. [ 2 ] So far, properly adapted printing techniques have been shown to be useful for fabrication of printed organic electronic devices, [ 6,7 ] sensors, [ 8 ] photovoltaics, [ 9 ] micromechanical devices, [ 10 ] organic, [ 3 ] and inorganic [ 11 ] light-emitting diode (LED) displays. Adaptations included: 1) ink property adjustments to comply with the requirements of the solute, printed substrate, and/or delivery system; [ 1,10 ] 2) surface pre-treatments to tune ink wettability and ultimately improve pattern quality; [ 10,12 ] and 3) post-printing treatments to cure the deposited patterns.…”

Section: Introductionmentioning

confidence: 99%

Printing Nanostructures with a Propelled Anti‐Pinning Ink Droplet

Konvalina

Leshansky

Haick

2015

Adv Funct Materials

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Striving for cheap and robust manufacturing processes has prompted efforts to adapt and extend methods for printed electronics and biotechnology. A new “direct‐write” printing method for patterning nanometeric species in addressable locations has been developed, by means of evaporative deposition from a propelled anti‐pinning ink droplet (PAPID) in a manner analogous to a snail‐trail. Three velocity‐controlled deposition regimes have been identified; each spontaneously produces distinct and well‐defined self‐assembled deposition patterns. Unlike other technologies that rely on overlapping droplets, PAPIDs produce continuous patterns that can be formed on rigid or flexible substrates, even within 3D concave closed shapes, and have the ability to control the thickness gradient along the pattern. This versatile low cost printing method can produce a wide range of unusual electronic systems not attainable by other methods.

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“…Significant effort has recently been reported on the development of printable gold inks [4][5][6]11] which have important applications as chemiresistor sensors and as electrode structures that possess a high chemical stability for lab-on-chip devices [14]. Compared to the advances made in the optimisation of gold inks relatively less progress has been reported for printed platinum (Pt) despite such films having potentially novel applications for biosensor and fuel cell technologies.…”

Section: Introductionmentioning

confidence: 99%

“…The active electronic inks that are deployed in such material printers range from insulators to metals and typically face a number of challenges to ensure that design features may be accurately reproduced whilst the electronic performance remains acceptable [3]. Popular metal inks generally comprise a suspension of nanoparticles which must be dried and sintered at high temperatures to achieve an acceptable resistivity for interconnect features [4][5][6]. These suspension inks frequently suffer from undesirable agglomeration effects which may lead to nozzle blocking and ultimately a limitation on the achievable resolution of printed features.…”

Section: Introductionmentioning

confidence: 99%

Scatter-limited conduction in printed platinum nanofilms

Goldie

Hourd

Harvie³

et al. 2014

J Mater Sci

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It is demonstrated that thin platinum films may be deposited onto smooth glass substrates using a materials printer and a propriety organometallic ink. Under optimised printing and subsequent thermal curing conditions, excellent film adhesion to the substrates was achieved for thicknesses of about 15 nm. The resistivity of the optimised films is observed to be a factor of less than 3 higher than pure bulk platinum at 300 K and exhibits a slightly smaller associated thermal coefficient of resistance. The resistivity parameters are found to be insensitive to the gaseous measurement environment which suggests that intercalated carbon regions within the films following the curing process have been largely eliminated. An analysis of the resistivity data indicates that electronic conduction is consistent with enhanced boundary scattering at granular structures that are introduced during multi-pass printing. A minimum electron mean free path of ~ 18 nm is deduced from the measured film topography.The presented work will find application in biosensor and fuel cell technologies.

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Inkjet-printed gold nanoparticle chemiresistors: Influence of film morphology and ionic strength on the detection of organics dissolved in aqueous solution

Cited by 70 publications

References 35 publications

Influence of Gold Nanoparticle Film Porosity on the Chemiresistive Sensing Performance

Influence of Gold Nanoparticle Film Porosity on the Chemiresistive Sensing Performance

Printing Nanostructures with a Propelled Anti‐Pinning Ink Droplet

Scatter-limited conduction in printed platinum nanofilms

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