### Session U3: Nanomechanical Architecture of Strained Thin Films

8:00 AM–10:24 AM, Thursday, March 16, 2006
Baltimore Convention Center Room: Ballroom I

Chair: Max Lagally, University of Wisconsin-Madison

Abstract ID: BAPS.2006.MAR.U3.3

### Abstract: U3.00003 : Nonochannel networks, light emission and waveguidung of micro- and nanotubes, and ultra-compact coils

9:12 AM–9:48 AM

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#### Author:

Oliver G. Schmidt
(Max-Planck-Institut fuer Festkoerperforschung, Heisenbergstr. 1, D-70569 Stuttgart, Germany)

Quite generally, thin solid films can be partially released from a substrate surface by selective underetching and form into various 3D micro- and nano-objects [1-3]. Here, we show that such released layers form into complex nanochannel networks, which can be fluid-filled and emptied within fractions of a second. Furthermore, we demonstrate that single material layers roll-up into micro- and nanotubes. In particular, we show that all-Si tubes can be fabricated. Quantum emitters such as InAs/GaAs quantum dot heterostructures are integrated into the wall of rolled-up microtubes, and we study the emission and the waveguiding properties of such quantum dots in a tube'' [4]. Finally, metal/semiconductor bilayers are rolled up into microtubes. This technique opens the way to realize and integrate ultra-compact coils, transformers and capacitors on a single chip [5]. I am grateful to my collaborators Y. Mei, R. Songmuang, C. Mendach, C. Deneke, D. Thurmer, F. Cavallo, and A. Rastelli (all Max-Planck-Institut fuer Festkoerperforschung Stuttgart, Germany) \newline \newline [1] O. G. Schmidt and K. Eberl, Nature 410, 168 (2001) \newline [2] O. G. Schmidt et al., Advanced Materials 13, 756 (2001) \newline [3] V. Ya. Prinz et al., Physica E 6, 828 (2000) \newline [4] S. Mendach et al., Appl. Phys. Lett. (submitted) \newline [5] O. G. Schmidt et al., IEEE J. Selected Topics Quantum Electronics 8, 1025 (2002)

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2006.MAR.U3.3