Mediaspace scheduled maintenance: Aug 25, 2026 07:00 - 12:00 AM. During this time, videos will be temporarily unavailable. Check status updates.

Concept

Optical mouse

Related publications (22)

Roadmap on Optical Sensors

Lei Zhang, Luc Thévenaz

Optical sensors and sensing technologies are playing a more and more important role in our modern world. From micro-probes to large devices used in such diverse areas like medical diagnosis, defense, monitoring of industrial and environmental conditions, o ...

2023

Ultrafast dynamic switching of optical response based on nonlinear hyperbolic metamaterial platform (vol 30, pg 21634, 2022)

Jiaye Wu

We present an erratum to our previously published work [ "Ultrafast dynamic switching of optical response based on nonlinear hyperbolic metamaterial platform, " Opt. Express 30(12), 21634 (2022).]. The corrections do not affect the results and conclusion o ...

Optica Publishing Group2022

SBS-based fiber sensors

Luc Thévenaz

The spectra of Brillouin scattering processes in optical fibers are affected by temperature, axial strain, and other quantities of interest. This dependence forms the basis for optical Brillouin scattering based optical fiber sensors. Since the first propo ...

Elsevier2022

Plasmon-induced near-infrared fluorescence enhancement of single-walled carbon nanotubes

Giulia Tagliabue, Ardemis Anoush Boghossian, Shang-Jung Wu, Alessandra Antonucci, Theodoros Tsoulos, Amirmostafa Amirjani, Sayyed Hashem Sajjadi

Single-walled carbon nanotubes (SWCNTs) emit near-infrared (NIR) fluorescence that is ideal for optical sensing. However, the low quantum yields diminish the sensor’s signal-to-noise ratio and limits the penetration depths for in vivo measurements. In this ...

2022

High Tuning Range Spiking 1R-1T VO2 Voltage-Controlled Oscillator for Integrated RF and Optical Sensing

Mihai Adrian Ionescu, Teodor Rosca, Fatemeh Qaderi Rahaqi

In this work we propose and experimentally validate a relaxation spiking oscillator architecture with ultra-high tuning range (higher than 400%, from 5KHz to more than 25kHz when the control voltage is varied from 2.5 to 5V) that exploits the reversible me ...

IEEE2021

Progress in Violet Light-Emitting Diodes Based on ZnO/GaN Heterojunction

Eric Feltin

Progress in light-emitting diodes (LEDs) based on ZnO/GaN heterojunctions has run into several obstacles during the last twenty years. While both the energy bandgap and lattice parameter of the two semiconductors are favorable to the development of such de ...

MDPI2020

Single crystal diamond gain mirrors for high performance vertical external cavity surface emitting lasers

Niels Quack, Alexandru Mereuta, Andrei Caliman, Pascal Gallo, Grigore Suruceanu, Gergely Huszka, Mehdi Naamoun

We report on the design, fabrication and optical performance of gain mirrors in single crystal diamond substrates for vertical external cavity surface emitting lasers (VECSELs). VECSELs have gained attention recently due to their potential for high emissio ...

2020

Adaptive Laser Welding Control: A Reinforcement Learning Approach

Giulio Masinelli, Silvio Zanoli

Despite extensive research efforts in the field of laser welding, the imperfect repeatability of the weld quality still represents an open topic. Indeed, the inherent complexity of the underlying physical phenomena prevents the implementation of an effecti ...

2020

Specification of aspherical surfaces used as refractive elements in micro-optical systems

Toralf Scharf, Wilfried Noell, Jeremy Béguelin

The optical performance of refractive plano-convex microlenses is mainly related to the quality of their (a)spherical surface. An efficient tolerancing of this surface is a key step towards the manufacturing of high quality microlenses. However, we demonst ...

SPIE-INT SOC OPTICAL ENGINEERING2019

Templating colloidal sieves for tuning nanotube surface interactions and optical sensor responses

Ardemis Anoush Boghossian, Daniel Jerôme Siefman, Alice Judith Gillen, Shang-Jung Wu, Benjamin Paul Johanès Gabriel Lambert

Surfactants offer a tunable approach for modulating the exposed surface area of a nanoparticle. They further present a scalable and cost-effective means for suspending single-walled carbon nanotubes (SWCNTs), which have demonstrated practical use as fluore ...

2019

Excitation of resonant plasmonic cavities by integrated waveguides for sensing applications

Gaël David Osowiecki

Optical sensors represent a large growing market which is nowadays focusing onto advancement in mobile technology. Innovations in the field of optical sensors are mostly driven by the technological advancements in the domain of micro & nanofabrication. One ...

EPFL2016

Active Nanorheology with Plasmonics

Tian Qiu, Hyeonho Jeong

Nanoplasmonic systems are valued for their strong optical response and their small size. Most plasmonic sensors and systems to date have been rigid and passive. However, rendering these structures dynamic opens new possibilities for applications. Here we d ...

Amer Chemical Soc2016

Monolithic perovskite/silicon-heterojunction tandem solar cells processed at low temperature

Michael Graetzel, Mohammad Khaja Nazeeruddin, Ulf Anders Hagfeldt, Michael Saliba, Antonio Abate, Juan-Pablo Correa-Baena, Ludmilla Steier

Tandem solar cells combining silicon and perovskite absorbers have the potential to outperform state-of-the-art high efficiency silicon single junction devices. However, the practical fabrication of monolithic silicon/perovskite tandem solar cells is chall ...

Royal Soc Chemistry2016

Investigation of Partially Gated Si Tunnel FETs for Low Power Integrated Optical Sensing

Mihai Adrian Ionescu, Nilay Dagtekin

This paper presents experimental results regarding optical and electrical characteristics of a partially gated p-i-n structure that has an extension in the channel region coated with transparent material. The correlation between band to band tunneling and ...

IEEE2014

Continuous-wave vertically emitting photonic crystal terahertz laser

Romuald Houdré, Zhaolu Diao

Compact semiconductor light sources with high performance continuous-wave (CW) and single mode operation are highly demanded for many applications in the terahertz (THz) frequency range. Distributed feedback (DFB) and photonic crystal (PhC) quantum cascade ...

Wiley-VCH Verlag Berlin2013

Characterisation of Low Impact Energy Induced Damage in Composite Plates with Embedded Optical Sensors

Jeannot Frieden

Fibre reinforced materials are increasingly employed in aerospace, naval and civil structures because of their low weight and high specific strength and stiffness. A major concern is the inherent susceptibility of composite laminates to barely visible dama ...

EPFL2011

Hybrid polymer microlens arrays with high numerical apertures fabricated using simple ink-jet printing technique

Edoardo Charbon, Jürgen Brugger, Dmitri Boiko, Vahid Fakhfouri, Joo Yeon Kim, Nils Benedict Brauer

Microlens arrays fabricated by a direct ink-jet printing of UV-curable hybrid polymer are reported. A periodic pattern of polymer drops was ink-jet printed on the surface-treated glass substrate and cured in the UV-light. Using this simple technique, we de ...

2011

Vision-based control of near-obstacle flight

Dario Floreano, Jean-Christophe Zufferey, Antoine Beyeler

This paper presents a novel control strategy, which we call optiPilot, for autonomous flight in the vicinity of obstacles. Most existing autopilots rely on a complete 6-degree-of-freedom state estimation using a GPS and an Inertial Measurement Unit (IMU) a ...

2009

Optical sensor using a floating body SOI MOSFET in the Delta-sigma loop

Maher Kayal, Jean-Michel Sallese

In this paper, the partially depleted SOI phototransistor has been used as a light intensity sensor. A pixel implementing the technique elaborated in [1] was designed and implemented on SOI technology. The circuit implements a first order Delta-sigma modul ...

2008

Design and characterization of a CMOS 3-D image sensor based on single photon avalanche diodes

Edoardo Charbon, Cristiano Niclass, Pierre-André Besse, Alexis Rochas

The design and characterization of an imaging system is presented for depth information capture of arbitrary three-dimensional (3-D) objects. The core of the system is an array of 32 × 32 rangefinding pixels that independently measure the time-of-flight of ...

2005