Concept

Verre borosilicate

Publications associées (53)

Achieving high hybridization density at DNA biosensor surfaces using branched spacer and click chemistry

Sandrine Gerber, Mounir Driss Mensi, Perrine Agnes Edith Robin, Alireza Kavand, Lucas Mayoraz

The COVID-19 pandemic has highlighted the necessity to develop fast, highly sensitive and selective virus detection methods. Surface-based DNA-biosensors are interesting candidates for this purpose. Functionalization of solid substrates with DNA must be pr ...

2023

High Aspect Ratio Au Microflakes via Gap-Assisted Synthesis

Giulia Tagliabue, Fateme Kiani Shahvandi

Ultrathin and extra-large single-crystalline Au microflakes (Au MFs) have a huge potential in applications ranging from nanophotonics to catalysis. Yet, wet chemical synthesis approaches cannot access this size range due to the proportionality between grow ...

AMER CHEMICAL SOC2022

Contactless Optical Packaging Concept for Laser to Fiber Coupling

Yves Bellouard, Saood Ibni Nazir

A novel method for the laser to fiber coupling is presented in which coarse alignment is achieved through micromachined v-grooves and mirrors in a fused silica substrate. Furthermore, fine repositioning is done in a noncontact manner by using a femtosecond ...

2021

Local tuning of fused silica thermal expansion coefficient using femtosecond laser

Yves Bellouard, Pieter Vlugter, Erica Kathleen Block

Femtosecond laser exposure of fused silica in the nonablative regime can lead to various localized bulk modifications of the material structure. In this paper, we show that these laser-induced modifications can be used to tune silica thermal expansion prop ...

2019

Effects of Se Incorporation in La5Ti2CuS5O7 by Annealing on Physical Properties and Photocatalytic H-2 Evolution Activity

Takashi Hisatomi, Swarnava Nandy

Oxysulfoselenide semiconductor photocatalysts absorb light at longer wavelengths than the corresponding oxysulfides. However, the synthesis of oxysulfoselenides is challenging due to excessive particle growth and the limited availability of metal selenide ...

AMER CHEMICAL SOC2019

Hybrid laser 3D microprocessing in glass/polymer micromechanical sensor: towards chemical sensing applications

Yves Bellouard

We demonstrate the fabrication of a 3D polymer/glass micromechanical sensor by combining two femtosecond laser direct writing processes: subtractive laser-assisted chemical etching combined with additive two-photon polymerization techniques. In the first s ...

SPIE-INT SOC OPTICAL ENGINEERING2018

Post-Sputtering Heat Treatments of Molybdenum on Silicon Wafer

Chien-Jen Yang

This paper investigated the property evolutions of Mo thin films that were subjected to post-sputtering heat treatments from 700 degrees C to 1100 degrees C. It was found that, after annealing, the use of Si wafers eliminated crack formations found in prev ...

2018

On the Limits of Precision Glass Molding for Diffractive Optical Elements

Karin Prater

Diffractive optical elements (DOEs) consist of surface reliefs with dimensions in the micrometer range and nanometer precision. Two technologies dominate: Elements replicated in plastic and directly microfabricated elements in fused silica. Plastic DOEs ar ...

EPFL2017

Effect of reactor material and its reuse on photo-Fenton process efficiency at near-neutral pH: Alterations in E-coli inactivation and resorcinol degradation kinetics in water

Stefanos Giannakis, Angelica Varon Lopez

The effect of reactor material (borosilicate and polyethylene terephthalate-PET) and its reuse on the microbiological and chemical decontamination of water by the photo-Fenton reaction at near-neutral pH was assessed. Escherichia coli was used as an indica ...

Elsevier2017

Micro-structuring of glassy carbon for precision glass molding of binary diffractive optical elements

Hans Peter Herzig, Toralf Scharf, Karin Prater

Precision glass molding is a more cost efficient process for the large volume manufacturing of highly complex optical surfaces than direct manufacturing. Glassy carbon (GC) molds are used for precision glass molding, because they can be operated at tempera ...

Optical Society of America2016

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