Sep. 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.
moreSep. 02, 2014
TSOM, a technique developed several years ago at the National Institute of Standards and Technology (NIST), can enable optical microscopes to measure the three-dimensional (3-D) shape of objects at nanometer-scale resolution-far below the normal resolution limit for optical microscopy (about 250 nanometers for green light). The results could make the technique a useful quality control tool in the manufacture of nanoscale devices such as next-generation microchips.
moreAug. 25, 2014
Laser physicists have found a way to make atomic-force microscope probes 20 times more sensitive and capable of detecting forces as small as the weight of an individual virus.
The technique, developed by researchers at The Australian National University (ANU), hinges on using laser beams to cool a nanowire probe to minus 265 degrees Celsius.
moreAug. 14, 2014
In this study APTMS and APREMS aminosilanes were used for the modification of silicon, with a purpose for using them in sensor´s applications (detection of explosives like TNT, DNT, RDX, etc.). The morphology and surface chemistry of the modified surfaces were investigated using atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). Our results show that the polymerization of aminosilanes and consequently the thickness of the aminosilane layer depend on the number of possible bonding sites of the aminosilane molecule.
moreJul. 24, 2014
Polarization charges in ferroelectric materials are screened by equal amounts of surface charges with opposite polarity under ambient conditions. Researchers from the Center for Nanoscale Materials, Argonne's Nanoscience & Technology and Materials Science divisions, and Tohoku University have shown that scraping, collecting, and quantifying surface screen charges reveals the underlying polarization domain structure at high speed, a technique dubbed charge gradient microscopy (CGM).
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.
moreJun. 16, 2014
Coupled three-dimensional Ge quantum dot crystals (QDCs) are realized by multilayer growth of quantum dots (QDs) on patterned Si (001) substrates. With increasing the vertical periodic number of the QDCs, the photoluminescence (PL) spectral linewidth decreased exponentially, and so did the peak energy blueshift caused by increasing excitation power, which are attributed to the electronic coupling and thus the formation of miniband.
moreJun. 10, 2014
The WITec Suite software is specifically developed to acquire and process large data volumes of large-area, high-resolution measurements and 3D imaging while providing speed, performance, and usability.
Through the software architecture and graphical user interface an integrated and consolidated functionality is available incorporating the various techniques and measurement modes from Raman, to AFM, to SNOM, fluorescence and luminescence.
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.
moreMay. 15, 2014
For years, scientists have had an itch they couldn't scratch. Even with the best microscopes and spectrometers, it's been difficult to study and identify molecules at the so-called mesoscale, a region of matter that ranges from 10 to 1000 nanometers in size. Now, with the help of broadband infrared light from the Advanced Light Source (ALS) synchrotron at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab), researchers have developed a broadband imaging technique (Synchrotron Infrared Nano-Spectroscopy) that looks inside this realm with unprecedented sensitivity and range. The results have been published in PNAS.