RHK PanScan

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Press Releases
Posted Date: February 1, 2012

RHK Technology, Inc. has hired Dr. Shengyong Qin as Staff Scientist, adding further expertise and in-depth, hands-on experience in LT SPM to RHK. Dr. Qin earned his PhD in Physics at the University of Texas at Austin in 2008, under supervision of Dr. Chih-Kang (Ken) Shih. Later he joined Oak Ridge National Laboratory (ORNL) in the renown Center for Nanophase Materials Sciences. There he was a primary operator of the RHK LT QuadraProbe for three years of intensive use in this very active user facility for nano-research.

Dr. Qin’s primary research areas have been focused on experimental study of nanoscale electronic and magnetic materials, including novel thin-film and nanostructure growth; nanoscale characterization with STM of structural, electronic and transport properties of semiconductor and metal nanostructures; exploration of novel quantum phenomena in thin metal films; and superconductivity in reduced dimensions.

Dr. Qin has published numerous peer-reviewed journals, written a book chapter as an invited author, and presented at many national scientific conferences papers.

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Press Releases
Posted Date: January 10, 2012

RHK welcomes Dr. Byoung Choi as the newest member of our Research and Development team. Dr. Byoung Choi received his PhD in Physics in 2006 in the group of Prof. Young Kuk with a topic of: “Chemical and Mechanical Manipulation of Azobenzene Molecules by STM” He later joined Dr. Miquel Salmeron’s group at LBNL in 2006 as a Post Doc where he developed a cryogenic STM/AFM based on the qPlus sensor and studied various systems including water adsorbed on the Cu(110) surface.

His research interests included Atomic resolved imaging and manipulation of water adsorbed surfaces and water related reactions with STM and NC-AFM Surface chemical reactions and catalysis at the molecular level Photoreaction studies of photosensitive molecules Phonon and electron mediated surface dynamics of molecules and nanostructures

At RHK, Dr. Byoung Choi will utilize his expertise on projects including our PAN cryogenic STM/AFM and Quadraprobe systems.

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Image of the Month
Posted Date: March 1, 2011
iotm-march-2011

(a)–(c) Intensity plots of G(V)/GN as a function of temperature and applied bias for three different films (upper panels), and the resistance vs temperature (R-T) in the same temperature range (lower panels); vertical dotted lines in the upper panels correspond to Tc. Insets of panels (a),(b) and left inset of panel (c) show representative tunneling spectra in the superconducting state (blue), in the pseudogap state (green) and above the pseudogap temperature (red). The right inset of panel (c) shows the AA background subtracted spectra at 2.65 K. [right inset of Fig. 2(c)] clearly reveals the presence of broadened coherence peaks around 2 mV confirming the superconducting origin of the pseudogap feature. In addition, the individual line scans [23], reveal that the superconducting state becomes progressively inhomogeneous as the disorder is increased [11].

Microscope:
Homebuilt STM

Controls:
RHK SPM 100

Contributors:
M. Mondal, A. Kamlapure, M. Chand, G. Saraswat, S. Kumar, J. Jesudasan, L. Benfatto, V. Tripathi, and P. Raychaudhuri – Tata Institute of Fundamental Research and Sapienza University

Reference:
Phys. Rev. Lett. 106, 047001 (2011)

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Press Releases
Posted Date: February 15, 2011

The US Air Force has awarded RHK Technology, Inc. Phase II STTR funding to develop ground-breaking Nano-analytical instruments crucial for National Security and American research and industrial competitiveness.

RHK is collaborating with Dr. Lukas Novotny and the University of Rochester Nano-Optics group. They are combining their expertise to develop and commercialize a Nano-Spectroscopy platform to perform chemically-specific imaging with high spatial resolution at a level far surpassing the best products found in the market today. The RHK-Novotny team successfully demonstrated their novel techniques in Phase 1 and is now the only group awarded Phase II funding.

Adam Kollin, RHK President, said, “Identifying both the ‘where’ and the ‘what’ of unknown compounds – and doing so non-destructively – delivers huge advantages in materials science, nanotech, and catalysis. We call it Hyperspectral Imaging, or chemical fingerprinting at the nano-scale.” For Military and Security applications, such an instrument could screen for and reverse engineer high energy density materials, radar absorbing materials, biologically active nano-systems, and nuclear nanomaterials.

The Nano-Spectroscopy Platform is the first to enable a non-specialist or specialist to produce and analyze high quality spectroscopic data correlated with nanometer scale topographic images in real time. It is also the first to enable simultaneous use of all contact and non-contact AFM and STM imaging modes with spectroscopic tasks such as confocal and tip-enhanced fluorescence, extinction, Raman scattering and other nonlinear scattering.

The market demand and commercial potential for this capability are broad, multi-faceted, and growing rapidly. In Phase II, instrument capabilities will be further advanced and packaged as a Platform at an initial stage of commercial productization. Full standardization for manufacturing and formal release will commence in Phase III.

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