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Nanotechnology

New Control Technique for Scanning Tunnelling Microscopes
Nov. 04, 2014

New Control Technique for Scanning Tunnelling Microscopes

Jülich scientists have developed a new control technique for scanning tunnelling microscopes that enables the user to manipulate large single molecules interactively using their hands. Until now, only simple and inflexibly programmed movements were possible.
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Correlative Microscopy of Optical Materials
Oct. 13, 2014

Correlative Microscopy of Optical Materials

Modern optical and optoelectronic devices are composed of different optical materials and photonic structures which need to be analyzed at the microscale. Comprehensive micro-characterization including functional and structural properties mostly requires a combination of different microscopic techniques applied to these devices. In this article the characterization of optical materials with Correlative Light and Electron Microscopy (CLEM) is outlined for the example of a Light Emitting Diode (LED).
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Nano-Spectroscopy: Slow-Motion Movies of Tiny Nanostructures
Oct. 10, 2014

Nano-Spectroscopy: Slow-Motion Movies of Tiny Nanostructures

Physicists from the University of Regensburg have developed a novel microscope that allows them to record slow-motion movies of tiny nanostructures with groundbreaking time resolution - faster even than a single oscillation cycle of light. With their new microscope they have directly imaged the super-fast motion of electrons, which has been published in Nature Photonics.
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A Breakthrough in Electron Microscopy
Sep. 23, 2014

A Breakthrough in Electron Microscopy

Imagine that you want to find out from a single picture taken of the front of a house, what the building looks like from behind, whether it has any extensions or if the brickwork is damaged, and how many rooms are in the basement. Sounds impossible? Not in the nanoworld. Scientists from Jülich and Xi'an have developed a new method with which crystal structures can be reconstructed with atomic precision in all three dimensions. Admittedly, they did not use a picture from a simple digital camera to perform this feat, but rather an image from an ultra-high resolution electron microscope. The process is also especially suitable for the spatial mapping of radiation-sensitive samples, which would be quickly destroyed by the high energy measurement beam. The results have been published in the current edition of Nature Materials.
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Sep. 15, 2014

JPK Expands Availability of Instrumentation in the USA

JPK Instruments, a manufacturer of nanoanalytic instrumentation for research in life sciences and soft matter, announces their expansion into the US market with new distributors and the availability of the NanoWizard AFM.
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Medical Imaging: New Imaging Agent Provides Better Picture of the Gut
Jul. 28, 2014

Medical Imaging: New Imaging Agent Provides Better Picture of the Gut

A multi-institutional team of researchers has developed a new nanoscale agent for imaging the gastrointestinal (GI) tract. This safe, noninvasive method for assessing the function and properties of the GI tract in real time could lead to better diagnosis and treatment of gut diseases. Results have been published online in Nature Nanotechnology.
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Microscopic Study of Nanostructured AlOx
Jul. 17, 2014

Microscopic Study of Nanostructured AlOx

Large area ordered nanopatterning of RF sputtered AlOx layers have been carried out. The technique involves UV laser treating of the film through LB films of silica nanospheres. The hexagonal, close packed arrangement of these spheres was projected to the surface due to the laser treatment resulting in ordered structure of pits of ~200 nm diameter and 1.3 nm depths. The samples were characterized by means of AFM and XTEM. Experimental results are in good agreement with the simulations.
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TEM Sample Preparation of Nanoparticles in Suspensions
Jul. 07, 2014

TEM Sample Preparation of Nanoparticles in Suspensions

Nanomaterials are of significant economic interest with a global market value of roughly 20 billion €, which is expected to rise to 2 trillion € by 2015 [1]. For commercial use, the European Union provides the following recommended definition: "‘Nanomaterial' means a natural, incidental or manufactured material containing particles, in an unbound state or as an aggregate or as an agglomerate and where, for 50% or more of the particles in the number size distribution, one or more external dimensions is in the size range 1 nm-100 nm" [2].
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Highly Non-Linear Metamaterials for Laser Technology
Jul. 05, 2014

Highly Non-Linear Metamaterials for Laser Technology

Nonlinear optical materials are widely used in laser systems. However, high light intensity and long propagation are required to produce strong nonlinear optical effects. Researchers at The University of Texas at Austin and the Technische Universitaet Muenchen created metamaterials with a million times stronger nonlinear optical response, compared to the traditional nonlinear materials, and demonstrated frequency conversion in films 100 times thinner than human hair using light intensity comparable to that of a laser pointer.
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Nano-Imaging Probes Structural Disorder in Organic Semiconductor
Jun. 16, 2014

Nano-Imaging Probes Structural Disorder in Organic Semiconductor

Using a newly developed nano-imaging method, LMU researchers show that thin-film organic semiconductors contain regions of structural disorder that could inhibit the transport of charge and limit the efficiency of organic electronic devices. The results have been published in Nature Communications.
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