The results of studies the influence thicknesses electron-blocking, hole-conducting and recombination layers on luminance-voltage other electrophysical characteristics a multilayer light-emitting diode with an active layer based semiconductor quantum dots are presented. Optimized voltages determined to achieve maximum efficiency electroluminescence diode. Keywords: dots, diode, blocking layer.

OBJECTIVE To evaluate the usefulness of plaque-mounted diode-light transillumination (DLT) for the localization of episcleral plaques around intraocular tumors. METHODS A clinical case series was performed to create, evaluate, and modify diode-light plaque construction, application, and imaging. Eight patients with choroidal melanoma were offered DLT as an additional method of ophthalmic plaq...

BACKGROUND/AIM Enlargement of laser scars after retinal argon laser photocoagulation can give rise to deterioration in visual acuity. Subthreshold micropulse diode laser may decrease this risk. The aim of this study was to compare the effectiveness of subthreshold micropulse diode laser (810 nm) and conventional argon laser (514 nm) photocoagulation for the treatment of clinically significant m...

High power, high brightness diode lasers are beginning to compete with solid state lasers, i.e. disk and fiber lasers. The core technologies for brightness scaling of diode lasers are optical stacking and dense spectral combining (DSC), as well as improvements of the diode material. Diode lasers have the lowest cost of ownership, highest efficiency and most compact design among all lasers. Mult...

--The electrical International System of Units (SI) are defined and realized as DC electrical quantities. National Institute for Standards (NIS), Egypt maintains the DC voltage unit by using the DC Josephson Voltage Standard (JVS) as a primary standard for DC voltage adding to eight zener diode reference standards as DC voltage secondary standards. The JVS is used to provide traceability of ele...

OBJECTIVES Fluoride therapy is important for control and prevention of dental caries. Laser irradiation can increase fluoride uptake especially when combined with topical fluoride application. The objective of this study was to compare the effects of CO2 and diode lasers on enamel fluoride uptake in primary teeth. MATERIALS AND METHODS Forty human primary molars were randomly assigned to four...

The actual market volume of high-power lasers for manufacturing is dominated by diffusion cooled CO2 laser systems at the multi-kW range and lamp pumped Nd:YAG laser systems at the kW range. Substituting the lamps by diodes the Nd:YAG laser in rod design entered the market as diode pumped solid state laser of the first generation. With output powers up to 6 kW the diode pumped rod is used in in...

peripheral ossifying fibroma is one of the commonest occurring reactive lesions on gingiva. it is associated with local irritational factors and often interferes with speech, mastication and maintenance of oral hygiene, in addition to being aesthetically unpleasant. it is usually treated with surgical excision using scalpel and removal of irritational factors, often resulting in mucogingival de...

The reduced optical bandwidth associated with resonance enhancement poses a significant challenge for resonators to process wide-bandwidth optical data. We report one-way transmission of 10 giga-bit-per-second optical data through a silicon optical diode based on both the resonance-enhanced optical nonlinear effects and resonance reshaping. The diode is operated with a forward-only or backward-...

Fluid diodes are fluidic devices that enhance fluid flow in a particular direction while inhibiting it in the opposite direction without the use of moving parts. This is accomplished through the use of nozzle shaped geometry on one side of the diode, and cusp shaped geometry on the opposing side. Fluid meets very little resistance as is travels though the nozzle side of the diode. The cusps on ...