Oct. 13, 2014
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).
moreOct. 10, 2014
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.
moreSep. 23, 2014
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.
moreSep. 15, 2014
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.
moreJul. 28, 2014
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.
moreJul. 17, 2014
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.
moreJul. 07, 2014
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 . 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" .
moreJul. 05, 2014
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.
moreJun. 16, 2014
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.
moreMay. 27, 2014
In response to requests from the semiconductor industry, a team of PML researchers has demonstrated that atomic force microscope (AFM) probe tips made from its near-perfect gallium nitride nanowires are superior in many respects to standard silicon or platinum tips in measurements of critical importance to microchip fabrication, nanobiotechnology, and other endeavors.