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Recent progress in silk fibroin-based flexible electronics

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Thermal scanning probe lithography (t-SPL) is an advanced lithography technique in which a heated atomic force microscope tip locally modifies a sample material. Due to the nanometer-sized tip apex diameter, t-SPL enables patterning of sub-10 nm structures ...

EPFL2018

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A spider uses up to seven different types of silk, all having specific functions, as building material, weapon and sensory organ to detect the presence of preys on its web. Recently, scientists have put under the limelight the extraordinary properties of t ...

2018

Silk Fibroin as a Resist for Thermal Scanning Probe Lithography

Jürgen Brugger, Xiao Sheng Zhang, Ya Wang, Samuel Zimmermann

We present for the first time nano-scale patterning of silk fibroin with a thermal scanning probe to locally convert water-insoluble crystalline silk into the water-soluble phase. Our first experiments demonstrate silk as a fully water-based resist for the ...

2017

Transient electronics for edible neuroprosthetics

Diego Ghezzi, Laura Ferlauto, Paola Vagni

Transient electronics is a recent challenging research field aiming at the realization of functional electronic devices able to disappear in a controlled and predefined manner. Amongst different applications, biomedical devices based on transient technolog ...

2017

A transparent silk-fibroin-based triboelectric microgenerator for airflow energy harvesting

Jürgen Brugger, Xiao Sheng Zhang, Ya Wang, Yinben Guo

We present a new transparent high-performance triboelectric microgenerator (TEMG) based on an emerging material, silk fibroin. Silk fibroin has a strong ability to lose electrons and occupies a top-level positive position in the triboelectric series. It th ...

IEEE Xplore2017

Conductive nanocomposites have emerged as significant smart engineered materials for realizing flexible electronics on diverse substrates in recent years. Conductive nanocomposites are comprised of conductive fillers mixed with polymeric elastomer (e.g. po ...

Iop Publishing Ltd2017

Thermal-responsive biodegradable composite membrane for drug delivery application

Ya Wang

Drug delivery systems have been engineered in order to improve therapeutic performance and reduce the side effects of conventional delivery system like oral ingestion, subcutaneous injection [1-2]. There exist several types of drug delivery systems, among ...

2017

Arrays of Pentacene Single Crystals by Stencil Evaporation

Jürgen Brugger, Shenqi Xie, Valentin Flauraud

In order to realize high-performance organic thin-film transistors (TFT), two parameters of the organic semiconducting layer are desired: single crystallinity for high mobility and patterning for low off currents. High-quality single crystals can be fabric ...

2016

Arrays of Pentacene Single Crystals by Stencil Evaporation

Jürgen Brugger, Shenqi Xie, Valentin Flauraud

American Chemical Society2016

Weaving our way towards a new generation of ﬁbre-optic chemical sensors based on spider silk

Luc Thévenaz, Isabelle Dicaire, Kenny Hey Tow, Desmond Chow Ming Chia

From the spider’s perspective, silk is not only a building material but also a safety net, a weapon and a sensory organ to detect the presence of preys on its web. Indeed, this primeval material has been shaped over hundreds of millions of years by spiders ...

Ieee2016