Image of the Month

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Image of the Month
Posted Date: July 1, 2008
institution

Microscope:
RHK UHV 7500

Controls:
SPM 1000 Control System

Description :
Large regularly shaped islands on air-cleaved mica surfaces after degassing in UHV at 473 K for 14 h recorded in the constant detuning mode. NC-AFM images recorded in the constant detuning mode. The profiles shown below the images are cross-sections taken along the indicated lines. (a) Island of 1.7 nm height with regular shape. Image taken at a detuning of -7.3 Hz and a bias voltage of 0 V. (b) Island of 5 nm height. The extended bright lobes in the centre of this structure are a scanning artefact. Image taken at a detuning of -4.0 Hz and a bias voltage of -1.3 V. (c) Zoom into the structure marked by the square in frame (b) revealing three terraces. Image taken at a detuning of -22.1 Hz and a bias voltage of 0 V.

Courtesy of:
F. Ostendorf, C. Schmitz, S. Hirth, A. Kuhnle, J. J. Kolodziej, and M. Reichling

Universitat Osnabruck, Research Centre for Nanometer-Scale Science and Advanced Materials (NANOSAM), and Jagiellonian University

Reference: Nanotechnology 19 (2008) 305705 (6pp)

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Image of the Month
Posted Date: May 1, 2008
iotm-may-2008

Microscope:
RHK UHV 325

Controls:
SPM 1000 and PLLPro SPM Control Systems

Description :
True constant height image with current and ΔF(Hz) acquisition amplitude of oscillation, 3Å peak to peak.

Courtesy of:
Sergiy Pryadkin of RHK Technology

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Image of the Month
Posted Date: April 1, 2008
institution

Microscope:
Unisoku USM-1300

Controls:
SPM 1000 Control System

Description:
Empty stm state image of Si(111)- v3 x v3 Ag surface taken at 5 K.

Imaging Conditions:
-1.5V, 200 pA

Courtesy of:
M. Ono, Y. Nishigata,T. Nishio T. Eguchi, Y. Hasegawa
The University of Tokyo

PRL 96, 016801 (2006)

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Image of the Month
Posted Date: March 1, 2008
iotm-march-2008

Microscope:
Homebuilt STM

Controls:
SPM 1000 Control System featuring XPMProTM

Description :
Self-assembled monolayer of 1,3,5-benzenetribenzoic acid. The STM image was obtained in-situ at the liquid-graphite interface with nonanoic acid as solvent. Intermolecular hydrogen bonds facilitate the formation of a nano-porous supramolecular network, which can be utilized for the lateral ordering of nanoscale objects. The lattice parameter amounts to 3.2 nm and the cavity diameter is 2.8 nm.

(further reading: J. Phys. Chem B 110, 10829-10836 (2006))

Courtesy of:
Dr. Lorenz Kampschulte and Dr. Markus Lackinger, Department for Earth and Environmental Science, Ludwig-Maximilians-University Munich

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