Search results for "ETC"
showing 10 items of 778 documents
Texturing of Indium Phosphide for Improving the Characteristics of Space Solar Cells
2021
This paper discusses and demonstrates the usefulness and prospects of using textured layers of indium phosphide as a material for space solar cells. Such designs improve the performance of the photovoltaic converter by increasing the effective area and surface roughness. Thus, it minimizes the background reflectivity of the surface. Textured layers on the InP surface were obtained by electrochemical etching using a bromous acid solution.
An aging evaluation of the bearing performances of glass fiber composite laminate in salt spray fog environment
2019
The aim of the present paper is to assess the bearing performance evolution of pinned, glass-composite laminates due to environmental aging in salt-spray fog tests. Glass fibers/epoxy pinned laminates were exposed for up to 60 days in salt-spraying, foggy environmental conditions (according to ASTM B117 standard). In order to evaluate the relationship between mechanical failure mode and joint stability over increasing aging time, different single lap joints, measured by the changing hole diameter (D), laminate width (W) and hole free edge distance (E), were characterized at varying aging steps. Based on this approach, the property-structure relationship of glass-fibers/epoxy laminates was a…
Behaviour of vastus lateralis muscle-tendon during high intensity SSC exercises in vivo
2003
Aims: The interaction between fascicle and tendinous tissue of human vastus lateralis muscle was investigated during varying intensity stretch–shortening cycle (SSC) jumps performed on a sledge apparatus. Methods: Eight subjects performed single leg squat (SJ) and drop jumps (DJ) from a constant dropping height but to different rebound heights. The fascicle length of the vastus lateralis muscle (VL) was determined from real-time ultrasonography during the movement. Tendon length changes were calculated by subtracting the horizontal part of the fascicle length from the muscle–tendon unit (MTU) length. Simultaneously, kinematic, kinetic and electromyographic data were recorded from leg musc…
Direct Writing of Channels for Microfluidics in Silica by MeV Ion Beam Lithography
2011
The lithographic exposure characteristic of amorphous silica (SiO2) was investigated for 6.8 MeV16O3+ions. A programmable proximity aperture lithography (PPAL) technique was used for the ion beam exposure. After exposure, the exposed pattern was developed by selective etching in 4% v/v HF. Here, we report on the development of SiO2in term of the etch depth dependence on the ion fluence. This showed an exponential approach towards a constant asymptotic etch depth with increasing ion fluence. An example of microfluidic channels produced by this technique is demonstrated.
Plasma etch characteristics of aluminum nitride mask layers grown by low-temperature plasma enhanced atomic layer deposition in SF6 based plasmas
2012
The plasma etch characteristics of aluminum nitride (AlN) deposited by low-temperature, 200 °C, plasma enhanced atomic layer deposition (PEALD) was investigated for reactive ion etch (RIE) and inductively coupled plasma-reactive ion etch (ICP-RIE) systems using various mixtures of SF6 and O2 under different etch conditions. During RIE, the film exhibits good mask properties with etch rates below 10r nm/min. For ICP-RIE processes, the film exhibits exceptionally low etch rates in the subnanometer region with lower platen power. The AlN film’s removal occurred through physical mechanisms; consequently, rf power and chamber pressure were the most significant parameters in PEALD AlN film remova…
Por los curadores del egregio Don Pedro Maza de Lisana, Carros, y de Arborea, olim Don Guillen de Rocafull, y Boil Conde de Albatera. Con la curadora…
1669
Sig. [A]-N2, [ ]2 Reclams. - Capital grav.
Por ... D. Pedro Maza de Avalos y Rocamora, conde de la Granja, Gran Castellan de Amposta ... Con D. Carlos Tarrega, presbitero, y sus Hermanos. Sobr…
1700
Sig. A-F2, G1 Reclams. - Capital grav.
Por los ... curadores del ... conde de Albatera. Con la ... duquesa de Bejar curadora del ... duque de Bejar su hijo. En el pleyto de immission en po…
1669
Sig. [ ]1, A1, B-M2 Reclams. - Cristus a la port. - Capital grav.
Alegacion por el Conde de Albatera ... con el Duque de Beiar : el Conde de Albatera responde a la duda que se ha dado por la Real Audiencia, en ambos…
1655
Caplletra ornada Sign.: A-B2, C3 Reclams
Por el illustre Don Pedro Maça Ladron de Liçana, Carroz y Arborea, olim don Alonso Diego Lopez de Çuñiga, Sotomayor , y Mendoça, Duque de Bejar,…
1656
Sig. [A]-F2 Grav. a la port. - Capital grav. Reclams