Publications by Chaoqun Dong | EPFL Graph Search

Multimaterial Shape Memory Polymer Fibers for Advanced Drug Release Applications

Fabien Sorin, Stella Andréa Françoise Laperrousaz, Chaoqun Dong, Pierre-Luc Eloi Piveteau, Hritwick Banerjee

Stimuli-responsive polymers offer unprecedented control over drug release in implantable delivery systems. Shape memory polymer fibers (SMPFs), with their large specific surface area and programmable properties, present promising alternatives for triggerab ...

Springer Science and Business Media LLC2025

Soft Multimaterial Magnetic Fibers and Textiles

Fabien Sorin, Syrine Mansour, Stella Andréa Françoise Laperrousaz, Chaoqun Dong, Andreas Leber, Hritwick Banerjee, Xue Wan, Rémi Andréa La Polla

Magnetically responsive soft materials are promising building blocks for the next generation of soft robotics, prosthesis, surgical tools, and smart textiles. To date, however, the fabrication of highly integrated magnetic fibers with extreme aspect ratios ...

Wiley-V C H Verlag Gmbh2023

Thermally Drawn Elastomer Nanocomposites for Soft Mechanical Sensors

Inès Richard, Fabien Sorin, Yunpeng Qu, Stella Andréa Françoise Laperrousaz, Chaoqun Dong, Andreas Leber

Stretchable and conductive nanocomposites are emerging as important constituents of soft mechanical sensors for health monitoring, human-machine interactions, and soft robotics. However, tuning the materials' properties and sensor structures to the targete ...

WILEY2023

Highly Integrated Multi-Material Fibers for Soft Robotics

Bastien Schyrr, Fabien Sorin, Nicola Bartolomei, Stella Andréa Françoise Laperrousaz, Chaoqun Dong, Andreas Leber, Hritwick Banerjee

Soft robots are envisioned as the next generation of safe biomedical devices in minimally invasive procedures. Yet, the difficulty of processing soft materials currently limits the size, aspect-ratio, manufacturing throughput, as well as, the design comple ...

WILEY2022

3D stretchable and self-encapsulated multimaterial triboelectric fibers

Fabien Sorin, Stella Andréa Françoise Laperrousaz, Chaoqun Dong, Pedro Miguel Nunes Pereira de Almeida Reis, Andreas Leber, Dong Yan, Hritwick Banerjee

A robust power device for wearable technologies and soft electronics must feature good encapsulation, high deformability, and reliable electrical outputs. Despite substantial progress in materials and architectures for two-dimensional (2D) planar power con ...

2022

Second harmonic generation in glass-based metasurfaces using tailored surface lattice resonances

Olivier Martin, Jérémy Butet, Dang Tùng Nguyen, Fabien Sorin, Wei Yan, Kuang-Yu Yang, Chaoqun Dong, Andreas Leber

Dielectric metasurfaces have shown prominent applications in nonlinear optics due to strong field enhancement and low dissipation losses at the nanoscale. Chalcogenide glasses are one of the promising materials for the observation of nonlinear effects than ...

2021

Elongated microstructured capacitive sensor

Véronique Michaud, Dang Tùng Nguyen, Fabien Sorin, Baris Çaglar, Chaoqun Dong, William Nicolas Duncan Esposito

The present invention concerns an elongated capacitive sensor (1) for fluid monitoring. The sensor (1) comprising: a fibre support (5) made of a dielectric material or dielectric composite material; and a first electrode (7, 9) and a second electrode (7, 9 ...

2021

Electronic Multi-material Fibers and Textiles: Novel Designs and Applications

Chaoqun Dong

Flexible electronics and particularly soft fibers and textiles are becoming key components in rapidly developing fields such as robotics, health and personal care, sensing, or implantable and wearable devices. Thus far however, the ability to impart soft a ...

EPFL2021

High-efficiency super-elastic liquid metal based triboelectric fibers and textiles

Rajasundar Chandran, Dang Tùng Nguyen, Fabien Sorin, Wei Yan, Nicola Bartolomei, Yunpeng Qu, Marco Volpi, Chaoqun Dong, Andreas Leber

Fibers that harvest mechanical energy via the triboelectric effect are excellent candidates aspower sources for wearable electronics and functional textiles. Thus far however, their fab-rication remains complex, and exhibited performances are below the sta ...

Nature Research2020

Soft and stretchable liquid metal transmission lines as distributed probes of multimodal deformations

Rajasundar Chandran, Fabien Sorin, Nicola Bartolomei, Chaoqun Dong, Andreas Leber

Mechanical sensing represents a key functionality in soft electronics for applications in health monitoring, human–machine interaction, or soft robotics. Current approaches typically rely on intricate networks of sensors specific to one type of deformation ...

2020

Microstructured Multimaterial Fibers for Microfluidic Sensing

Dang Tùng Nguyen, Fabien Sorin, Alexis Gérald Page, Wei Yan, Chaoqun Dong

The thermal drawing of a uniform capillary-like fiber that integrates an encapsulated microchannel and an embedded capacitor system within a polymeric cladding is demonstrated. Such a fiber construct has versatile functionalities applicable to microfluidic ...

Wiley2019

Dealloying-directed synthesis of efficient mesoporous CoFe-based catalysts towards the oxygen evolution reaction and overall water splitting

Chaoqun Dong, Jie Zhang, Zheyu Zhang, Yiping Wang

It is a great challenge to design highly active, stable and low-cost catalysts for electrochemically splitting water to realize the clean energy generation and renewable energy storage. Herein, a facile one-step dealloying strategy was proposed to synthesi ...

Royal Soc Chemistry2017