Concept

Diaphragm (optics)

Related publications (34)

Single molecule detection on surfaces

Monitoring biological relevant reactions on the single molecule level based on fluorescence spectroscopy techniques has become one of the most promising approaches for understanding a variety of phenomena in biophysics, biochemistry and life science. By ap ...

EPFL2007

On the chromatic aberration of microlenses

Hans Peter Herzig, Toralf Scharf

The optical properties of plano-convex refractive microlenses with low Fresnel Number (typically FN < 10) are investigated. It turns out that diffraction effects at the lens aperture limit the range of the effective focal length. The upper limit of the foc ...

2006

Nanometric crystal defects in transmission electron microscopy

Transmission electron microscopy (TEM) is revisited in order to define methods for the identification of nanometric defects. Nanometric crystal defects play an important role as they influence, generally in a detrimental way, physical properties. For insta ...

2006

Slanted hole array beam profiler (SHArP) - A high-resolution portable beam profiler based on a linear aperture array

Demetri Psaltis

We demonstrate a novel high-resolution portable beam profiler based on a slanted linear array of small apertures, termed a slanted hole array beam profiler (SHArP). The apertures are directly fabricated on a metal-coated CMOS imaging sensor. With a single ...

2006

Characterization of light collection through a subwavelength aperture from a point source

Demetri Psaltis

We experimentally measure and theoretically model the light transmission characteristics of subwavelength apertures. The characterization consists of translating a point source at varying vertical height and lateral displacement from the aperture and measu ...

2006

On-chip extrusion of lipid vesicles and tubes through microsized apertures

Philippe Renaud

In this work we present the formation of micrometre-sized lipid vesicles and tubes with perfectly homogeneous diameter and extraordinary length. The method is a novel approach for unconventional fabrication of soft-matter microstructured devices based on t ...

2006

Fabrication of arrays of sub-wavelength nano-apertures in an optically thick gold layer on glass slides for optical studies

Theo Lasser, Patrik Willi Hoffmann, Benjamin Dwir, Ivo Utke, Marcel Leutenegger

We report on the fabrication of two-dimensional arrays of nano-optical apertures in gold layers by electron beam lithography (EBL) on a transparent glass substrate. 30 x 30 μ m(2) large arrays of high aspect ratio sub-wavelength cylinders (400 nm diameter ...

2005

Nanoscale dispensing of liquids through cantilevered probes

Nico de Rooij, Terunobu Akiyama, Sylvia Jeney, André Meister

Nanoscale dispensing is a novel technique to deposit material and create structures at dimensions of 100 nm and below. It has great flexibility in feature shape and choice of deposited material. Due to its potential low cost and lack of time consuming step ...

2003

Moulded photoplastic probes for near-field optical applications

Jürgen Brugger

The inexpensive fabrication of high-quality probes for nearfield optical applications is still unsolved although several methods for integrated fabrication have been proposed in the past. A further drawback is the intensity loss of the transmitted light in ...

2001

Aperture apodization using cubic spline interpolation: application in digital holographic microscopy

Christian Depeursinge, Etienne Cuche, Pierre Marquet

A method is proposed for designing apodized apertures with a transmission profile which follows a curve defined using a cubic spline interpolation. The method is applied in digital holographic microscopy to perform digitally the apodization of the aperture ...

2000

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