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Excellent electric properties of free-standing InAs membranes (2001)

Yamaguchi, Hiroshi ; Dreyfus, Remi ; Hirayama, Yoshiro

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 78 (2001), S. 2372-2374

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: We fabricated semiconducting free-standing-beam and Hall-bar structures with a high slenderness ratio, a minimum thickness of 50 nm, and a typical length of several tens of microns using InAs membranes processed from InAs/GaAs heterostructures. These structures showed clear electric conductivity without any intentional doping. We obtained the carrier concentration and mobility by means of standard Hall measurements, thus confirming that both parameters were much larger than those of as-grown heterostructure samples. These results indicate that this material system is promising for micro/nanoelectromechanical system applications. © 2001 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.1365946

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Microscopic artificial swimmers (2005)

Baudry, Jean ; Roper, Marcus L. ; Fermigier, Marc ; [et al.]

[s.l.] : Nature Publishing Group

Nature 437 (2005), S. 862-865

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ISSN: 1476-4687

Source: Nature Archives 1869 - 2009

Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics

Notes: [Auszug] Microorganisms such as bacteria and many eukaryotic cells propel themselves with hair-like structures known as flagella, which can exhibit a variety of structures and movement patterns. For example, bacterial flagella are helically shaped and driven at their bases by a reversible rotary engine, ...