Position control and optical manipulation for nanotechnology applications

Solid and Condensed State Physics

Abstract.

During the last decade, great advances have been made concerning the construction and manipulation of nanostructures. As a consequence, nanometer stability and control of the sample position have became crucial points. For this purpose, we have built an optical microscope with high mechanic stability and we have implemented a feedback system in order to compensate thermal drifts. We demonstrate the system stability to be within one nanometer, with a control on the sample position of some micrometers, along the three spatial directions. The sample can be manipulated optically by means of a multiple optical tweezers setup and its displacements measured with a 3D position detector. We discuss and characterize the system properties thoroughly. We finally test the apparatus on a bio-molecular system constituted by a single myosin motor interacting with an actin filament.

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005

Authors and Affiliations

  1. 1.Italy and Dipartimento di Biologia Animale e Genetica “Leo Pardi”LENS, Via Nello Carrara 1, 50019 Sesto Fiorentino, FirenzeFirenzeItaly
  2. 2.LENS, Via Nello Carrara 1, 50019 Sesto Fiorentino, Firenze, Italy and Dipartimento di Fisica-Università degli Studi di FirenzeFirenzeItaly

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