Rapid selective metal patterning on polydimethylsiloxane (PDMS) fabricated by capillarity-assisted laser direct write

Lee, Ming-Tsang; Lee, Daeho; Sherry, Alexander D.; Grigoropoulos, Costas P.

doi:10.1088/0960-1317/21/9/095018

Cited by 42 publications

(39 citation statements)

References 24 publications

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“…In the early stage, metal nanoparticles, the noble metals in particular, were the main target materials for laser sintering due to their low electrical resistance and superior chemical stability. Gold [19][20][21][22][23][24][25][26][27] and silver [4,8,9,[28][29][30][31][32][33][34][35] are the most widely studied materials for laser sintering as conductors at microscale. These nanoparticles are usually prepared in the solution form with a specific solvent at high weight percentage, while small amounts of surfactants are added to prevent unwanted agglomeration or enhance the dispersion of nanoparticles within the solution.…”

Section: Methodsmentioning

confidence: 99%

Selective Laser Sintering of Nanoparticles

Hong¹

2018

Sintering of Functional Materials

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Selective laser sintering of nanoparticles has received much attention recently as it enables rapid fabrication of functional layers including metal conductors and metal-oxide electrodes on heat-sensitive polymer substrate in ambient conditions. Photothermal reactions induced by lasers rapidly increase the local temperature of the target nanoparticle in a highly selective manner, and subsequent sintering steps including melting and coalescence between nanoparticles occur to fabricate interconnected sintered films for various future applications. The mechanism of laser sintering, as well as possible target materials subject to laser sintering, together with experimental schemes developed to improve the process and potential applications, is briefly summarized in this chapter.

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Section: Methodsmentioning

confidence: 99%

Selective Laser Sintering of Nanoparticles

Hong¹

2018

Sintering of Functional Materials

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“…Several factors explain the popularity of SLS.T he advantage of this technique over other 3D printing techniques is that the powders produce materials that, when sintered, have ah igh purity and properties similar to those obtained by traditional fabrication processes.F urthermore, the machines can be designed to deliver various different powder precursors,w hich results in multi-material printing. SLS can also be used for writing metal patterns onto polymers such as PDMS, [17] afeature that could have applications in the design of biosensors.S LS is presently the rapid prototyping technique of choice for high-end, realistic industrial prototype design, as seen in the automotive and toy industry and for the development of sportswear and kitchenware,for example.…”

Section: Selective Laser Melting and Sinteringmentioning

confidence: 99%

3D‐Printed Microfluidics

et al. 2016

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The advent of soft lithography allowed for an unprecedented expansion in the field of microfluidics. However, the vast majority of PDMS microfluidic devices are still made with extensive manual labor, are tethered to bulky control systems, and have cumbersome user interfaces, which all render commercialization difficult. On the other hand, 3D printing has begun to embrace the range of sizes and materials that appeal to the developers of microfluidic devices. Prior to fabrication, a design is digitally built as a detailed 3D CAD file. The design can be assembled in modules by remotely collaborating teams, and its mechanical and fluidic behavior can be simulated using finite-element modeling. As structures are created by adding materials without the need for etching or dissolution, processing is environmentally friendly and economically efficient. We predict that in the next few years, 3D printing will replace most PDMS and plastic molding techniques in academia.

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“…Die Maschinen können unterschiedliche Pulver verarbeiten, was den Druck von Objekten aus mehreren Materialien ermöglicht. SLS kann auch verwendet werden, um Metallmuster auf Polymere wie PDMS zu drucken, eine Eigenschaft, die für die Herstellung von Biosensoren genutzt werden könnte. SLS ist derzeit die Methode der Wahl zur Produktion von High‐End‐Prototypen in der Industrie, z.…”

Section: D‐druckprozesseunclassified

Mikrofluidik aus dem 3D‐Drucker

Huynh

Horowitz

et al. 2016

Angewandte Chemie

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Die Entwicklung der weichen Lithographie hat den Weg bereitet für große Fortschritte auf dem Gebiet der Mikrofluidik. Allerdings ist die Fertigung und der Betrieb von Mikrofluidiksystemen auf PDMS‐Basis noch immer arbeitsaufwändig. Hinzu kommen sperrige Steuerungssysteme und unhandliche Benutzerschnittstellen, was insgesamt die Kommerzialisierung dieser Technologie erschwert. Mit dem 3D‐Druck steht nun eine Technik zur Verfügung, die für die Entwicklung von Mikrofluidikelementen ideal geeignet scheint. Dabei verfährt man so, dass im Vorfeld des Fertigungsprozesses eine CAD‐Datei entworfen wird, die später in den Drucker gespeist wird. Es besteht die Möglichkeit eines modularen Designs, das auf unterschiedliche Arbeitsteams aufgeteilt werden kann. Mechanisches Verhalten und Strömungsverhalten können vorab anhand von Computermodellen simuliert werden. Der Fertigungsprozess kommt ohne Ätz‐ oder Auflösungsprozesse aus und ist daher umweltschonend und wirtschaftlich. Wir prognostizieren, dass 3D‐Druck in den kommenden Jahren die meisten PDMS‐ und Formgusstechniken im akademischen Bereich ersetzen wird.

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Rapid selective metal patterning on polydimethylsiloxane (PDMS) fabricated by capillarity-assisted laser direct write

Cited by 42 publications

References 24 publications

Selective Laser Sintering of Nanoparticles

Selective Laser Sintering of Nanoparticles

3D‐Printed Microfluidics

Mikrofluidik aus dem 3D‐Drucker

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