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Bad Münster am Stein-Ebernburg, Germany

Veiga-Gutierrez M.,Physikalisches Institute and Center for Nanotechnologie | Woerdemann M.,University of Munster | Prasetyanto E.,Physikalisches Institute and Center for Nanotechnologie | Denz C.,University of Munster | De Cola L.,Physikalisches Institute and Center for Nanotechnologie
Advanced Materials | Year: 2012

An optical-tweezers assembly-line is presented, which has high potential for the construction of complex structures of zeolite L crystals and other microscopic building blocks. Different examples of assembled 2D and 3D zeolite structures are discussed. These include well-oriented monolayers, microtowers, and angle-aligned dye-loaded zeolites, which suggests exciting applications, for example as microscopic polarization sensors. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Woerdemann M.,University of Munster | Glasener S.,University of Munster | Horner F.,University of Munster | Devaux A.,Physikalisches Institute and Center for Nanotechnologie | And 2 more authors.
Advanced Materials | Year: 2010

Organization and patterning of zeolite L crystals with their unique properties such as their one-dimensional nano channel system is of highest topical interest with various applications in many areas of science. We demonstrate full three-dimensional optical control of single zeolite L crystals and for the first time fully reversible, dynamic organization of a multitude of individually controlled zeolite L crystals. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Woerdemann M.,University of Munster | Alpmann C.,University of Munster | Horner F.,University of Munster | Devaux A.,Physikalisches Institute and Center for Nanotechnologie | And 2 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2010

Zeolite crystals have a wide use as model systems for artificial light harvesting systems, as nano-containers for supramolecular organization or as building blocks for 1D and 2D assemblies of several crystals. In particular the assembly of zeolite L crystals with the aim to bridge the gap between the nano- and the macroscopic world has been a focus of research during the last years. However, almost all available approaches to order, assemble and pattern Zeolite L are restricted to large amounts of crystals. Although these approaches have proven to be powerful for many applications, but they have only limited control over positioning or orientation of single crystals and are lacking if patterns or structures are required which are composed of a few or up to a few hundred individual crystals. We demonstrate here that holographic optical tweezers are a powerful and versatile instrument to control zeolite L on the single crystal level. It is shown that full three-dimensional positioning, including rotational control, of any zeolite L crystal can be achieved. Finally, we demonstrate fully reversible, dynamic patterning of a multitude of individually controlled zeolite L crystals. © 2010 SPIE. Source

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