LNNano - Brazilian Nanotechnology National Laboratory

About

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The Laboratory for Surface Science (Laboratório de Ciência de Superfícies – LCS) was founded as group Microscopia de Tunelamento e Força Atômica (MTA) in 1999 as a division of the Laboratório Nacional de Luz Síncrotron (LNLS). In 2011 it was integrated into the newly found Laboratório Nacional de Nanotecnologia (LNNano) and in 2013 the name was changed to better reflect the focus of its instrumentation and its research. Since the opening to users in 2001, the facility is receiving researchers form Brazil and other foreign countries.

Traditionally surface science is a located in the field of physics and deals with the interfaces of solids to vacuum, hence including techniques like surface diffraction using electrons or surface spectroscopy techniques. In the more general definition by now, it embraces the study as well as the growth of solids with an interface to liquid, gasses or vacuum. Scanning probe microscopy is one of the most important technique to study these interfaces under different ambiances. Furthermore, different growth techniques are commonly included to prepare the initial surface of interest.

The LCS, run by the LCS team, tries to provide a pleasant, creative and productive scientific environment for the users as well as for our own research. We want to provide state of the art instrumentation for in-house as well as external researcher.

We operate currently four scanning probe microscopes (SPM) for a large variety of surface science related techniques in the fields of physics, chemistry and biology. We receive proposal from all areas of university based as well as industry based research. Requests for use of for the instruments can be submitted over the user portal. Beside the SPM facilities, a small number of thin film deposition equipment is installed, dedicated for the sample preparation for in-house research, but we offer limited access for users.

Our own research is focused to semiconductor nanostructures based on thin film release and rearrangement. We work in this field with interest in rolled-up micro- and nanotubes for applications as well as transfer and application of free-standing membranes. Furthermore, we develop and implement SPM techniques available for all users of the LCS. For latest results, have a look at our publications.