A novel self-heating paraffin membrane micro-actuator

Goldschmidtböing, Frank; Katus, P.; Geipel, Andreas; Woias, Peter

doi:10.1109/memsys.2008.4443710

Cited by 12 publications

(13 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, as previously mentioned, paraffin has also been used as solid plugs that can move freely within microfluidic channels when melted, and then either be flushed out or latched at new positions when solidified. Klintberg 2002aKlintberg , 2003bLiu 2004aLiu , 2004bBodén 2005Bodén , 2006bBodén , 2008bPark 2007;Yang 2007Yang , 2009Yoo 2007;Lehto 2008aLehto , 2008bSant 2010;Feng 2011;Boustheen 2011;AbiSamra 2011;Al-Faqheri 2013;Baek 2013Metal Kobayashi 2004Bodén 2008;Goldschmidtboing 2008;Ogden , 2011Svensson 2010;Sharma 2011b; …”

Section: Actuator Principle and Designmentioning

confidence: 99%

Review on miniaturized paraffin phase change actuators, valves, and pumps

Ogden

Klintberg

Thornell

et al. 2013

Microfluid Nanofluid

View full text Add to dashboard Cite

During the last fifteen years, miniaturised paraffin actuation has evolved through the need of a simple actuation principle, still able to deliver large strokes and high actuation forces at small scales. This is achieved by the large and rather incompressible volume expansion associated with the solid-to-liquid phase transition of paraffin. The common approach has been to encapsulate the paraffin by a stiff surrounding that directs the volume expansion towards a flexible membrane, which deflects in a directed stroke. However, a number of alternative methods have also been used in the literature. The most common applications to this date have been switches, positioning actuators, and microfluidic valves and pumps. This review will treat the historical background, as well as the fundamentals in paraffin actuation, including material properties of paraffin. Besides reviewing the three major groups of paraffin actuator applications; actuators, valves, and pumps, the modelling done on paraffin actuation will be explored. Furthermore, a section focusing on fabrication of paraffin microactuators is also included. The review ends with conclusions and outlook of the field, identifying unexplored potential of paraffin actuation.The final publication is available at Springer via http://dx

show abstract

Section: Actuator Principle and Designmentioning

confidence: 99%

Review on miniaturized paraffin phase change actuators, valves, and pumps

Ogden

Klintberg

Thornell

et al. 2013

Microfluid Nanofluid

View full text Add to dashboard Cite

show abstract

“…Actuators using refrigerants or other liquids as their working fluids exhibited response times on the order of several milli-seconds in transient operation [30]. To address this issue, carbon-doped paraffin has been utilized as an alternative working fluid [35]. Carbon-black was added to the paraffin wax on the order of 2e4% by volume.…”

Section: Membrane-based Actuatorsmentioning

confidence: 99%

Power production from phase change in MEMS and micro devices, a review

Weiss

2011

International Journal of Thermal Sciences

View full text Add to dashboard Cite

“…It had very slow setup times of one or two minutes per page, high drive current requirements, and extremely high combined mechanical force from all the pin lifting springs (so much combined force that the top plate bowed and dots in the middle of the page could not be reset). Thermal actuators that use paraffin wax expansion 10,11,12 or use shape memory alloys such as Nitinol 13,14 have been found to have slow response times for dot setup and even slower for dot reset, have high drive current requirements, have aggregated heat dissipation issues, and usually need a reliable latching mechanism to reduce their high power consumption. The American Foundation for the Blind's 64X64 dot sequential mechanical setup shared actuators braille display 15 was expensive to manufacture, noisy, had slow response time, and was vulnerable to dirt build up.…”

Section: Limitations Of Some Of the Most Notable Past And Current Dismentioning

confidence: 99%

The continuing quest for the 'Holy Braille' of tactile displays

Runyan¹,

Blazie²

2011

SPIE Proceedings

View full text Add to dashboard Cite

The Boston-based National Braille Press has established a Center for Braille Innovation (CBI), whose mission is to research and develop affordable braille literacy products. The primary focus has been to facilitate the development of dramatically lower cost electronic braille display devices, and the much-sought-after "Holy Braille" of a full-page electronic braille display. Developing affordable new braille technologies is crucial to improving the extremely low braille literacy rate (around 12%) of blind students. Our CBI team is working to aid developers of braille technology by focusing attention and resources on the development of the underlying braille actuator technologies. We are also developing braille-related information resources to aid braille display developers. The CBI braille requirements summary (available through the NBP website (http://www.nbp.org) is one of these resources. The braille specifications include braille dot dimensions, spacing, displacement, lifting force, and response time requirements. In addition, mentoring, helping to evaluate new braille display ideas, and openly sharing braille display technology are all part of the activities of the NBP braille innovation team.

show abstract

A novel self-heating paraffin membrane micro-actuator

Cited by 12 publications

References 3 publications

Review on miniaturized paraffin phase change actuators, valves, and pumps

Review on miniaturized paraffin phase change actuators, valves, and pumps

Power production from phase change in MEMS and micro devices, a review

The continuing quest for the 'Holy Braille' of tactile displays

Contact Info

Product

Resources

About