Publication

Integration of Sub-Wavelength Nanofluidics on Suspended Photonic Crystal Sensors

Publications associées (48)

Sub-wavelength Nano-fluidics on Suspended Photonic Crystal Sensors

We introduce a novel sensor scheme that combines nano-photonics and nano-fluidics on a single platform using free-standing photonic crystals. The sensor with 510 nm/RIU sensitivity can lead to enhanced analyte delivery to the sensor surface. (C) 2010 Optic ...

IEEE2010

Optical Transmission Through Sub-Wavelength Slits in Metals

This thesis explores the properties of the transmission of light through subwavelength slits in metal films. Theoretical and experimental studies on the transmission through slits in metals are presented. In addition, the potential use of these slits for d ...

EPFL2010

Generation and control of sound bullets with a nonlinear acoustic lens

Alessandro Spadoni

Acoustic lenses are employed in a variety of applications, from biomedical imaging and surgery to defense systems and damage detection in materials. Focused acoustic signals, for example, enable ultrasonic transducers to image the interior of the human bod ...

2010

Sub-wavelength nanofluidics in photonic crystal sensors

Hatice Altug, Min Huang

We introduce a novel sensor scheme combining nano-photonics and nano-fluidics on a single platform through the use of free-standing photonic crystals. By harnessing nano-scale openings, we theoretically and experimentally demonstrate that both fluidics and ...

2009

Direct measurement of diffusing proteins in nanochannels using fluorescence correlation spectroscopy

Philippe Renaud, Theo Lasser, Arnaud Bertsch, Nicolas Durand, Raphaël Goetschmann

Transport of proteins in liquid-filled nanometer-sized apertures with charged surfaces based on both diffusion and convective flow is investigated with the use of fluorescence correlation spectroscopy. The measured fluctuations of fluorescence allow the ev ...

Elsevier2009

Measuring the effect of structural connectivity on the water dynamics in heterogeneous porous media using speedy neutron tomography

The temporal and spatial distribution of water within a porous medium is affected by the medium's structure, i.e., the spatial arrangement of its constituents. To analyze structural effects on the fluid dynamics, we measured the 3D water content distributi ...

2008

Comparison of three commercially available radio frequency coils for human brain imaging at 3 Tesla

Rolf Gruetter, Wietske Van der Zwaag, Andreas Joosten

Objective To evaluate a transverse electromagnetic (TEM), a circularly polarized (CP) (birdcage), and a 12-channel phased array head coil at the clinical field strength of B (0) = 3T in terms of signal-to-noise ratio (SNR), signal homogeneity, and maps of ...

2008

An orthogonal fluxgate-type magnetic microsensor with electroplated Permalloy core

Radivoje Popovic, Pavel Kejik, Ozge Zorlu

In this paper, we present a new microfabricated orthogonal fluxgate sensor tructure. The sensor consists of an electroplated copper excitation rod surrounded by an electroplated Permalloy layer and has planar pick-up coils for signal detection. The use of ...

Elsevier2007

High-speed laser Doppler imaging of blood flow in biological tissue

Theo Lasser

Laser Doppler Imaging (LDI) is a non-invasive optical technique used for assessing the blood flow in biological tissue. This technique allows visualizing 2D distribution of blood flow over an extended area of tissue, e.g. human skin. We have developed a ne ...

SPIE2006

Full-field high-speed laser Doppler imaging system for blood-flow measurements

Theo Lasser

We describe the design and performance of a new full-field high-speed laser Doppler imaging system developed for mapping and monitoring of blood flow in biological tissue. The total imaging time for 256x256 pixels region of interest is 1.2 seconds. An inte ...

SPIE2006

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search