Publications de Wei Yan | EPFL Graph Search

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

Spectrally Selective Mid-Wave Infrared Detection Using Fabry-Perot Cavity Enhanced Black Phosphorus 2D Photodiodes

Christophe Ballif, Quentin Thomas Jeangros, Wei Yan

Thin two-dimensional (2D) material absorbers have the potential to reduce volume-dependent thermal noise in infrared detectors. However, any reduction in noise must be balanced against lower absorption from the thin layer, which necessitates advanced optic ...

AMER CHEMICAL SOC2020

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

Ultralong, complexly structured micro- and nanoscale metallic glasses and fibers

Inès Richard, Grégoire Courtine, Fabien Sorin, Wei Yan

The present invention and its embodiments propose a simple, unique, and scalable method for producing extremely long, highly uniform, and well-ordered micro- and nanoscale metallic glasses via thermal drawing the method comprising at least the steps of pre ...

2020

Nanoscale Controlled Oxidation of Liquid Metals for Stretchable Electronics and Photonics

Stéphanie Lacour, Fabien Sorin, Wei Yan, Louis Marie Philippe Martin-Monier

Liquid metals based on gallium have attracted considerable attention for soft and bioelectronics, thanks to their excellent combination of stretchability and conductivity. Nevertheless, owing to their large surface tension, these materials are notoriously ...

2020

Structured nanoscale metallic glass fibres with extreme aspect ratios

Giuseppe Schiavone, Güven Kurtuldu, Inès Richard, Stéphanie Lacour, Grégoire Courtine, Dang Tùng Nguyen, Fabien Sorin, Wei Yan, Yunpeng Qu, Vasiliki Tileli, Nicholas David James, Jordan Squair, Reinis Ignatans

Micro- and nanoscale metallic glasses offer exciting opportunities for both fundamental research and applications in healthcare, micro-engineering, optics and electronics. The scientific and technological challenges associated with the fabrication and util ...

Nature Publishing Group2020

Super-elastic multi-material optical fibers for health-care applications

Dang Tùng Nguyen, Fabien Sorin, Alexis Gérald Page, Wei Yan, Nicola Bartolomei, Yunpeng Qu, Andreas Leber

Stretchable optical and electronic fibers constitute increasingly important building blocks for a myriad of applications, particularly in robotics, soft prosthesis, surgical tools and implants, and smart medical textiles. The integration of multi-material ...

SPIE-INT SOC OPTICAL ENGINEERING2019

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

Self-assembly of nanostructured glass metasurfaces via templated fluid instabilities

Hatice Altug, Dang Tùng Nguyen, Fabien Sorin, Filiz Yesilköy, Alexis Gérald Page, Wei Yan, Arthur Le Bris, Yunpeng Qu, Louis Marie Philippe Martin-Monier, Kuan-Ting Ho

Modern devices require the tuning of the size, shape and spatial arrangement of nano-objects and their assemblies with nanometre-scale precision, over large-area and sometimes soft substrates. Such stringent requirements are beyond the reach of conventiona ...

Nature Publishing Group2019

Programmable self-assembled metasurface for strong field enhancement

Dang Tùng Nguyen, Fabien Sorin, Alexis Gérald Page, Wei Yan, Arthur Le Bris, Louis Marie Philippe Martin-Monier

Self-assembled chalcogenide metasurfaces is proposed for low-cost manufacturing on large-area unconventional substrates. Programmed control over particle arrangement and periodicity yields strong Fano resonances, highlighting novel applications for bio-det ...

IEEE2019

Advanced Multimaterial Electronic and Optoelectronic Fibers and Textiles

Federica Sordo, Dang Tùng Nguyen, Fabien Sorin, Alexis Gérald Page, Wei Yan, Yunpeng Qu

The ability to integrate complex electronic and optoelectronic functionalities within soft and thin fibers is one of today's key advanced manufacturing challenges. Multifunctional and connected fiber devices will be at the heart of the development of smart ...

Wiley-V C H Verlag Gmbh2019

Multi-material and Multi-functional Optical Fibers

Fabien Sorin, Alexis Gérald Page, Wei Yan, Yunpeng Qu

We will present the material science behind thermal drawing that enables us to impart optical fibers with novel architectures and advanced optoelectronic functionalities, as well as propose a new avenue for soft optical devices. ...

2018

Direct Synthesis of Selenium Nanowire Mesh on a Solid Substrate and Insights into Ultrafast Photocarrier Dynamics

Jacques-Edouard Moser, Fabien Sorin, Wei Yan, Andrés Burgos Caminal

Selenium (Se) nanowires have generated much interest both for the fundamental understanding of crystal formation and growth and for technological applications in optoelectronics, imaging, piezoelectricity, catalysis, and energy harvesting and storage. Seve ...

2018

Template assisted dewetting of optical glasses for large area, flexible and stretchable all dielectric metasurfaces

Dang Tùng Nguyen, Fabien Sorin, Alexis Gérald Page, Wei Yan, Arthur Le Bris, Yunpeng Qu, Louis Marie Philippe Martin-Monier

We propose for the first time template-assisted dewetting of high-index chalcogenide glasses for low-cost manufacturing of all-dielectric metasurfaces on large-area flexible and stretchable substrates. ...

OSA Publishing2018

Superelastic Multimaterial Electronic and Photonic Fibers and Devices via Thermal Drawing

Valentine Dominique Favrod, Dang Tùng Nguyen, Fabien Sorin, Alexis Gérald Page, Wei Yan, Nicola Bartolomei, Yunpeng Qu, René M. Rossi

Wiley2018

Stretchable Optical and Electronic Fibers via Thermal Drawing

Valentine Dominique Favrod, Dang Tùng Nguyen, Fabien Sorin, Alexis Gérald Page, Wei Yan, Nicola Bartolomei, Yunpeng Qu, René M. Rossi

IEEE2018

Integration of High-performance Optoelectronic Nanowire-based Devices at Optical Fiber Tips

Inès Richard, Fabien Sorin, Wei Yan

We establish a facile and robust approach to integrate high-performance monocrystalline semiconducting nanowire-based optoelectronic devices at optical fiber tips. The multi-functional fibers exhibit excellent optical and optoelectronic properties, leading ...

OSA Publishing2018

Multi-material micro-electromechanical fibers with bendable functional domains

Fabien Sorin, Alexis Gérald Page, Wei Yan, Yunpeng Qu, Marco Volpi

The integration of increasingly complex functionalities within thermally drawn multi-material fibers is heralding a novel path towards advanced soft electronics and smart fabrics. Fibers capable of electronic, optoelectronic, piezoelectric or energy harves ...

2017

Controlled Sub-Micrometer Hierarchical Textures Engineered in Polymeric Fibers and Microchannels via Thermal Drawing

Stéphanie Lacour, Dang Tùng Nguyen, Fabien Sorin, Alexis Gérald Page, Wei Yan, Alba Carla De Luca, Yunpeng Qu, Marco Volpi

The controlled texturing of surfaces at the micro- and nanoscales is a powerful method for tailoring how materials interact with liquids, electromagnetic waves, or biological tissues. The increasing scientific and technological interest in advanced fibers ...

2017

Hexagonal mesoporous silica islands to enhance photovoltaic performance of planar junction perovskite solar cells

Wei Yan, Yi Zhang, Bing Zhang

The efficiency of perovskite solar cells based on mesoscopic TiO2 was soaring over the past 3 years and is expected to reach over 25% by engineering the compn. of perovskite and interface layers. Efforts to increase the power conversion efficiency (PCE) o ...

Royal Society of Chemistry2017