Concept

Macroscopic scale

Related publications (81)

Off-axis low coherence interferometry contouring

Christian Depeursinge, Nicolas Pavillon, Florian Lang, Yves Delacrétaz

In this article we present a method to achieve tri-dimensional contouring of macroscopic objects. A modified reference wave speckle interferometer is used in conjunction with a source of reduced coherence. The depth signal is given by the envelope of the i ...

2009

Multilevel Assessment of the Impact of Rain on Drivers' Behavior Standardized Methodology and Empirical Analysis

For all road managers, inclement weather events are a source of uncertainty that can affect traffic operations and safety. Regarding safety, various studies reveal significant effects of adverse weather conditions on the frequency and severity of crashes. ...

National Academy of Sciences2009

Microscopic theory of the Casimir force at thermal equilibrium: Large-separation asymptotics

We present an entirely microscopic calculation of the Casimir force f(d) between two metallic plates in the limit of large separation d. The models of metals consist of mobile quantum charges in thermal equilibrium with the photon field at positive tempera ...

2008

Micropositioning and microscopic observation of individual picoliter-sized containers within SU-8 microchannels

Jürgen Brugger, Horst Vogel

We describe the fabrication and application of a bioanalytical chip, made of SU-8 photoresist, comprising integrated, high aspect-ratio microfluidic channels, suitable to manipulate and investigate vesicles, cell fragments and biological cells. A central m ...

2007

Surface molecular view of colloidal gelation

Sylvie Roke

We investigate the phase behavior of surface-functionalized silica colloids at both the molecular and macroscopic levels. This investigation allows us to relate collective properties such as aggregation, gelation, and aging directly to molecular interfacia ...

2006

Bose-Einstein condensation of exciton polaritons

Benoît Marie Joseph Deveaud, Vincenzo Savona, Stefan Kundermann

Phase transitions to quantum condensed phases - such as Bose - Einstein condensation (BEC), superfluidity, and superconductivity - have long fascinated scientists, as they bring pure quantum effects to a macroscopic scale. BEC has, for example, famously be ...

2006

Towards a Micro-Macro Model of Hot Tearing

Michel Rappaz, Jean-Marie Drezet, Vincent Mathier, Stéphane Vernède

Modelling of hot tearing must encompass several aspects: solidification, percolation of grains, stress/strain development, liquid feeding. The present contribution reviews recent progress made in this domain, both at the macro- and microscopic levels. At t ...

Trans Tech Publications2006

Hierarchical interconnections in the nano-composite material bone: Fibrillar cross-links resist fracture on several length scales

Georg Fantner

Bone is a complex and very important multi-constituent bio-composite. In this work, we focus on the arrangement of bone constituents from the nanoscopic to the microscopic scale, and investigate the influence of their arrangements on the fracture mechanism ...

2006

Signal buffering in random networks of spiking neurons: microscopic vs. macroscopic phenomena

Wulfram Gerstner, Julien Mayor

In randomly connected networks of pulse-coupled elements a time-dependent input signal can be buffered over a short time. We studied the signal buffering properties in simulated networks as a function of the networks' state, characterized by both the Lyapu ...

2005

Damage mechanisms at a microscopic scale of PM Ti-6Al-4V at 20 K

Cyril Cayron

The microscopic damage mechanisms at cryogenic temperature of an extra low interstitial Ti-6Al-4V obtained by powder metallurgy (PM) are investigated. Through SEM observations and EBSD mapping, it is attempted to identify the microstructural features that ...

2004

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