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Träfflista för sökning "WFRF:(Montelius Lars) ;pers:(Hessman Dan)"

Sökning: WFRF:(Montelius Lars) > Hessman Dan

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  • Hällström, Waldemar, et al. (författare)
  • Fifteen-Piconewton Force Detection from Neural Growth Cones Using Nanowire Arrays
  • 2010
  • Ingår i: Nano Letters. - : American Chemical Society (ACS). - 1530-6992 .- 1530-6984. ; 10:3, s. 782-787
  • Tidskriftsartikel (refereegranskat)abstract
    • We used epitaxially grown monodisperse nanowire arrays to measure cellular forces with a spatial resolution of 1 mu m. Nerve cells were cultured on the array and cellular forces were calculated from the displacement of the nanowire tips. The measurements were done in situ on live cells using confocal microscopy, Forces down to 15 pN were measured on neural growth cones, showing that this method can be used to study the Fine details of growth-cone dynamics.
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  • Luo, Gang, et al. (författare)
  • Nanoimprint lithography for the fabrication of interdigitated cantilever arrays
  • 2006
  • Ingår i: Nanotechnology. - : IOP Publishing. - 0957-4484 .- 1361-6528. ; 17:8, s. 1906-1910
  • Tidskriftsartikel (refereegranskat)abstract
    • We report on the realization of a novel interdigitated cantilever array with electrostatic control of the shape of the interdigitated array. It consists of an array of SiO2/metal double-finger cantilevers in a grating configuration together with an electrical connection part. The complete grating structure is fabricated with nanoimprint lithography, UV lithography and reactive ion etching. The patterns of the cantilever arrays are defined by nanoimprint lithography. The electrical contact pads are defined and aligned with the imprinted grating pattern by UV lithography. The two steps of reactive ion etching are optimized to get vertical sidewalls of the SiO2 cantilevers and finally to release them from the Si substrate. By applying a bias, the shape of the cantilever array can be altered due to the electrostatic force. The dimensions of the cantilevers and the spacing between them are optimized to achieve the desired functional operating characteristics of the structures. Since the fabrication scheme is based on nanoimprint lithography, such electrostatically controlled periodic structures may be relatively easily and non-expensively realized in various configurations, allowing them to function as optical switching elements, electrical filters, mass sensors, etc.
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  • Resultat 1-7 av 7

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