Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Johan Bejhed"'
Publikováno v:
Advances in Mechanical Engineering, Vol 2 (2010)
As fluidic microelectromechanical devices are developing and often attached to, or embedded in, large, complex, and expensive systems, the issues of modularity, maintenance, and subsystem replacement arise. In this work, a robust silicon connector su
Externí odkaz:
https://doaj.org/article/99017da736d840abbb6aa84a216443f5
Publikováno v:
Journal of Micromechanics and Microengineering. 17:472-481
Demonstrated and characterized here is a single use valve developed for high-pressure applications. Incorporated within the single use valve is a particle filter. The filter serves to remove any particle debris created by the activation process. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41d01887aa08e4df2411ad9de86cdeea
https://doi.org/10.1088/0960-1317/17/3/008
https://doi.org/10.1088/0960-1317/17/3/008
Publikováno v:
Journal of Micromechanics and Microengineering. 16:2006-2013
The gas flow through a network of crossing thin micro-machined channels has been successfully modeled and simulated. The crossings are formed by two sets of v-grooves that intersect as two silicon wafers are bonded together. The gas is distributed fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcb411b032754942e8047898c6232cf4
https://doi.org/10.1088/0960-1317/16/10/013
https://doi.org/10.1088/0960-1317/16/10/013
Autor:
Lars Stenmark, Fredrik Bruhn, Johan Köhler, Ulf Lindberg, Henrik Kratz, Klas Hjort, Johan Bejhed
Publikováno v:
Sensors and Actuators A: Physical. :587-598
MEMS components forming a complete hybrid cold gas microthruster system for spacecraft, designed to deliver maximum thrusts in the range of 0.1 to 10 mN, have been demonstrated. The system includes three different micromachined subsystems: a nozzle u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75fec4ad36bbaa5901a5ac69224c0ef6
https://doi.org/10.1016/s0924-4247(01)00805-6
https://doi.org/10.1016/s0924-4247(01)00805-6
Autor:
Kerstin Jonsson, Håkan Johansson, Pelle Rangsten, Maria Bendixen, Tor-Arne Grönland, Johan Bejhed
Publikováno v:
SPIE Proceedings.
Development of MEMS-based (Micro Electro Mechanical System) components and subsystems for space applications has been going on for at least two decades. The main driver for developing MEMS components for space is miniaturization through reduced mass,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71021a50decaaf87fa7847d6288bf821
https://doi.org/10.1117/12.876455
https://doi.org/10.1117/12.876455
Publikováno v:
Advances in Mechanical Engineering, Vol 2 (2010)
As fluidic microelectromechanical devices are developing and often attached to, or embedded in, large, complex, and expensive systems, the issues of modularity, maintenance, and subsystem replacement arise. In this work, a robust silicon connector su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46440e67a8a5f95c528e9d32b87a4cee
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-120366
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-120366
Publikováno v:
Scopus-Elsevier
One technique to measure mass flow in a microchannel is to measure the pressure drop over a well controlled orifice. Because of the small dimensions, the measurements are difficult to make precise. Manufacturing of MEMS components are expensive and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24c6204f27fffcc3c0fc93b3a7b06bd2
https://doi.org/10.2514/6.2009-4098
https://doi.org/10.2514/6.2009-4098
In this work, a gas valve using a microstructured silicon valve lid and a stainless steel valve seat clamped axially together in an aluminum cylinder is investigated. The difference in coefficient of thermal expansion of these components makes the va
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6020e69123fa626760429dfe5ce48bb2
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-94870
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-94870
Publikováno v:
42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
Development of a MEMS-based (Micro Electro Mechanical System) propulsion system has been pursued at Uppsala University, Sweden, since 1997. From 2005 and on, the continued development towards the first flight opportunity in 2009 is done within the fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7afaa57910ce845e4ea4687aa5088c88
https://doi.org/10.2514/6.2006-4873
https://doi.org/10.2514/6.2006-4873
Demonstrated and investigated here is a method to seal microfluidic systems by soldering. As a particularly difficult case of growing importance, the sealing of openings contaminated with paraffin wax was studied. Solder paste, screen printed on a me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8988621090c2fc6ecebca0be3fcdff36
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-94873
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-94873