Glassy and elastomeric nematic networks with dye molecules present can be very responsive to illumination, huge reversible strains being possible. If absorption is appreciable, strain decreases with depth into a cantilever, leading to bend that is the basis of micro-opto-mechanical systems (MOMS). Bend actually occurs even when Beer's law suggests a tiny penetration of light into a heavily dye-...

Planetarium technology is steadily shifting from opto-mechanical based projection to digital projection. This technology shift allows the consolidation of many individual projection sources into a single full-dome video-based display and image generation system. This shift is having a profound effect on planetarium show production, educational tools, theater automation, system maintenance, equi...

We have characterized the spectra and performance of an ensemble of eleven fiber–coupled laser diode arrays (LDAs) manufactured by Opto Power Inc. These high–power LDAs operate near 795 nm and are of a type commonly used for spin–exchange optical pumping of noble gases. We find the Opto Power LDAs to vary significantly in output power, spectral width, and other important characteristics, in a m...

Microsystems are providing key advances in studying single-cell mechanical behaviours. The mechanical interaction of cells with their extracellular matrix is fundamentally important for cell migration, division, phagocytes and apoptosis. As the displacement and scales of cellular phenomena is comparable to optical wavelength, optical metrology offers superior resolution and real-time imaging ca...

In this paper, a novel way for the fabrication of opto-electronic transceiver modules is proposed. These modules are characterized by the use of MT-RJ connectors, low-cost fabrication tools, highly efficient opto-electronic components such as VCSELs and CMOS integrated detectors, and an easy fabrication scheme. The module is based on the direct alignment technique; this means that the fibre and...

Cameras in mobile phones are supposed to capture images under a huge variety of lighting conditions while mostly hand held. To improve the performance in low light conditions, image stabilization shall optimize the resulting image by reducing the negative effects of motion blur due to handshake. While most cameras use an opto-mechanic approach and correct the motion by moving a lens element or ...

In this paper we propose and experimentally demonstrate a tunable laser structure cascading a semiconductor optical amplifier (SOA) that generates broadband amplified spontaneous emission and a reflective Opto-VLSI processor that dynamically reflects arbitrarily wavelengths and injects them back into the SOA, thus synthesizing an output signal of variable wavelength. The wavelength tunablility ...

Optical MEMS have the potential to drastically reduce the size and cost of digital communications and computation systems. However, the multiple technologies (optical, electrical, and mechanical) utilized in optical MEM systems has led to new challenges in the creation of computer aided design tools for these systems. This paper presents a system level opto-electro-mechanical CAD tool, Chatoyan...

The geometric calibration of the Planck satellite is investigated, specifically those parameters which require the use of the science data for their extraction. Methods for the recovery of these geometric-calibration parameters from point source detections in the science data are presented, together with the accuracies which may be achieved. These methods apply to the a posteriori evaluation of...

In this study, by using the finite volume method, the heat transfer in a convective straight fin with temperature-dependent thermal properties and an internal heat generation under multi-boiling heat transfer modes are analyzed. In this regard, the local heat transfer coefficient is considered to vary within a power-law function of temperature. In the present study, the coexistence of all the b...