Fabrication method of functional micro/nano structures over large-area, flexible and high curvature surfaces, by drawing a fiber from a preform

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Tandem electrospinning for heterogeneous nanofiber patterns

Silvestro Micera

Smart nanofibrillar constructs can be a promising technological solution for many emerging and established fields, facilitating the potential impact of nano-scale strategies to address relevant technological challenges. As a fabrication technique, electros ...

IOP PUBLISHING LTD2020

Wavefront shaping and deep learning in fiber endoscopy

Eirini Kakkava

Fiber endoscopy plays an important role in the clinical diagnosis and treatment processes involved in modern medicine. Thin fiber probes can relay information from confined places in the human body that are inaccessible for conventional bulky microscopes. ...

EPFL2020

The impact of hydrograph variability and frequency on sediment transport dynamics in a gravel-bed flume

Mário Jorge Rodrigues Pereira Da Franca, Carmelo Juez Jiménez

A laboratory study was undertaken to investigate how changes in flow regime and hydrograph shape (number of cycled hydrographs and duration of each hydrograph) together impact bedload transport and resulting bed morphology. Three hydrologic conditions (exp ...

WILEY2020

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

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

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

Advanced Multimaterial Electronic and Optoelectronic Fibers and Textiles

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

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

Unraveling radial dependency effects in fiber thermal drawing

François Gallaire, Fabien Sorin, Alexis Gérald Page, Mathias Simon Daniel Bechert

Fiber-based devices with advanced functionalities are emerging as promising solutions for various applications in flexible electronics and bioengineering. Multimaterial thermal drawing, in particular, has attracted strong interest for its ability to genera ...

2019

Distributed hydrostatic pressure measurement using phase OTDR in a highly birefringent photonic crystal fiber

Luc Thévenaz, Li Zhang

Although distributed fiber-optic sensing of axial strain and temperature is a well-established technique, there are almost no demonstrations of distributed hydrostatic pressure sensing. The main obstacle for such measurements is the low sensitivity to pres ...

IEEE Institute of Electrical and Electronics Engineers2019

Transport of flexible fibers in confined microchannels

François Gallaire, Mathias Simon Daniel Bechert

When transported in confined geometries rigid fibers show interesting transport dynamics induced by friction with the top and bottom walls. Fiber flexibility causes an additional coupling between fiber deformation and transport and is expected to lead to m ...

2019

Insights into the fabrication of sub-100 nm textured thermally drawn fibers

Fabien Sorin, Dang Tùng Nguyen, Inès Richard, Federica Sordo

The preform-to-fiber thermal drawing process has been recently proposed for the fabrication of fibers and microchannels with submicrometer surface textures. To better control the final architecture and reach small feature size down to tens of nanometers ho ...

AMER INST PHYSICS2019

Microstructured Multimaterial Fibers for Microfluidic Sensing

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

Fabrication and Characteristics of Yb-Doped Silica Fibers Produced by the Sol-Gel Based Granulated Silica Method

Duncan Thomas Lindsay Alexander, Hossein Najafi

Combining the sol-gel method for fiber material production with the granulated silica method for preform assembly results in a robust method that offers a high degree of freedom regarding both the composition and the geometry of the produced fiber. Using t ...

2018