scholarly journals High performance hard magnetic NdFeB thick films for integration into micro-electro-mechanical systems

2007 ◽  
Vol 90 (9) ◽  
pp. 092509 ◽  
Author(s):  
N. M. Dempsey ◽  
A. Walther ◽  
F. May ◽  
D. Givord ◽  
K. Khlopkov ◽  
...  
Keyword(s):  
High Performance ◽  
Thick Films ◽  
Mechanical Systems ◽  
Micro Electro Mechanical Systems

Design of Double Nozzle Type Powder Jet Device Optimized for PJD

2008 ◽  
Vol 389-390 ◽  
pp. 398-403 ◽  
Author(s):  
Toshihiko Shibuya ◽  
Mohammad Saeed Sepasy ◽  
Koichi Mizutani ◽  
Nobuhito Yoshihara ◽  
Ji Wang Yan ◽  
...  
Keyword(s):  
Thick Film ◽  
Atmospheric Pressure ◽  
Room Temperature ◽  
Thick Films ◽  
Mechanical Systems ◽  
Ferroelectric Materials ◽  
Nozzle Diameter ◽  
Micro Electro Mechanical Systems ◽  
Different Dimensions ◽  
Nozzle Type

Thick films are needed in micro-electro-mechanical systems (MEMS) as insulation, piezoelectric and ferroelectric materials. To form the thick film, powder jet deposition (PJD) method has been proposed. In the PJD process, microparticles are sprayed out from nozzle under the conditions of room temperature and atmospheric pressure, and make a film on the substrate. We have developed a new jet mechanism of double-nozzle type, and reported its results previously [1]. In this study, we optimized the shape of the nozzle through investigating the influence of different dimensions and shape of the nozzle on the particles blasting velocity. As a result, it is found that nozzle diameter has a large affect on particles velocity.

Application of MEMS Technology to a Lightwave Antenna for Communication in Space and Aeronautics

2006 ◽  
Author(s):  
Yasushi Munemasa ◽  
Masatoshi Sano ◽  
Makoto Mita ◽  
Tadashi Takano
Keyword(s):  
Radiation Pattern ◽  
High Performance ◽  
Light Wave ◽  
Mechanical Systems ◽  
Optical Antenna ◽  
Curved Surfaces ◽  
Micro Electro Mechanical Systems ◽  
Measurement Results ◽  
Mems Technology ◽  
Power Radiation

This paper reports a novel MEMS (Micro Electro Mechanical Systems) lightwave (optical) antenna as a telecommunication device in space and aeronautics. The high performance antenna at light wave frequency requires optimal curved surfaces and high mechanical precision to acquire high aperture efficiency. We have developed a novel micro lightwave antenna by applying MEMS (Micro Electro Mechanical Systems) technology. The antenna of transparent type (lens) is fabricated as a trial antenna, which has a 3-level step structure with diameter of 4 mm, to show the advantage of the antenna. The characteristics of the fabricated antenna have been measured. The measurement results of gain and power radiation pattern are in agreement with simulation result.

Novel magnets configuration toward a high performance electrodynamic micro-electro-mechanical-systems microspeaker

2014 ◽  
Vol 115 (17) ◽  
pp. 17E525 ◽  
Author(s):  
G. Sassine ◽  
I. Shahosseini ◽  
M. Woytasik ◽  
E. Martincic ◽  
J. Moulin ◽  
...  
Keyword(s):  
High Performance ◽  
Mechanical Systems ◽  
Micro Electro Mechanical Systems

Optical phase modulators using deformable waveguides actuated by micro-electro-mechanical systems

2011 ◽  
Vol 36 (7) ◽  
pp. 1089 ◽  
Author(s):  
Wei-Chao Chiu ◽  
Chun-Che Chang ◽  
Jiun-Ming Wu ◽  
Ming-Chang M. Lee ◽  
Jia-Min Shieh
Keyword(s):  
Mechanical Systems ◽  
Micro Electro Mechanical Systems ◽  
Optical Phase ◽  
Phase Modulators ◽  
Optical Phase Modulators

scholarly journals Wash Testing of Electronic Yarn

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1228 ◽  
Author(s):  
Dorothy Anne Hardy ◽  
Zahra Rahemtulla ◽  
Achala Satharasinghe ◽  
Arash Shahidi ◽  
Carlos Oliveira ◽  
...  
Keyword(s):  
Research Group ◽  
Copper Wire ◽  
Mechanical Systems ◽  
Consumer Products ◽  
Temperature Sensing ◽  
Micro Electro Mechanical Systems ◽  
Acoustic Sensing ◽  
Protective Polymer ◽  
Wash Durability

Electronically active yarn (E-yarn) pioneered by the Advanced Textiles Research Group of Nottingham Trent University contains a fine conductive copper wire soldered onto a package die, micro-electro-mechanical systems device or flexible circuit. The die or circuit is then held within a protective polymer packaging (micro-pod) and the ensemble is inserted into a textile sheath, forming a flexible yarn with electronic functionality such as sensing or illumination. It is vital to be able to wash E-yarns, so that the textiles into which they are incorporated can be treated as normal consumer products. The wash durability of E-yarns is summarized in this publication. Wash tests followed a modified version of BS EN ISO 6330:2012 procedure 4N. It was observed that E-yarns containing only a fine multi-strand copper wire survived 25 cycles of machine washing and line drying; and between 5 and 15 cycles of machine washing followed by tumble-drying. Four out of five temperature sensing E-yarns (crafted with thermistors) and single pairs of LEDs within E-yarns functioned correctly after 25 cycles of machine washing and line drying. E-yarns that required larger micro-pods (i.e., 4 mm diameter or 9 mm length) were less resilient to washing. Only one out of five acoustic sensing E-yarns (4 mm diameter micro-pod) operated correctly after 20 cycles of washing with either line drying or tumble-drying. Creating an E-yarn with an embedded flexible circuit populated with components also required a relatively large micro-pod (diameter 0.93 mm, length 9.23 mm). Only one embedded circuit functioned after 25 cycles of washing and line drying. The tests showed that E-yarns are suitable for inclusion in textiles that require washing, with some limitations when larger micro-pods were used. Reduction in the circuit’s size and therefore the size of the micro-pod, may increase wash resilience.

Micro-spectrophotometer based on micro electro-mechanical systems technology

2008 ◽  
Vol 3 (1) ◽  
pp. 37-43
Author(s):  
Lianqun Zhou ◽  
Yihui Wu ◽  
Ping Zhang ◽  
Ming Xuan ◽  
Zhenggang Li ◽  
...  
Keyword(s):  
Mechanical Systems ◽  
Micro Electro Mechanical Systems
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