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Sanftes Abtasten mit einer Lichtpinzette

By Guest PostNovember 24, 2015Scienceafm, alexander rohrbach, atom kraftmikroskop, lars friedrich, laser fangstrahl, lichtkraefte, lichtpinzette, messsystem, pfm, photon kraftmikroskop

Freiburger Forscher haben eine Methode entwickelt, die über Lichtkräfte weiche, strukturierte Oberflächen vermisst

Oberflächen trennen das Äußere vom Inneren, steuern chemische Reaktionen und regulieren den Austausch von Licht, Wärme und Feuchtigkeit. In der Natur und Technik spielen sie deshalb eine besondere Rolle. In der Fachzeitschrift „Nature Nanotechnology“ stellt der Freiburger Physiker Prof. Dr. Alexander Rohrbach zusammen mit seinem ehemaligen Doktoranden Dr. Lars Friedrich eine ultra-sanfte Abtastmethode für Oberflächen vor, die auf einer optischen Pinzette und Lichtkräften basiert. Mit solchen Mikroskopiemethoden ist es möglich, besonders empfindliche und kleinste Strukturen zu vermessen, ohne sie zu zerstören.

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Seeing in Color at the Nanoscale

By Guest PostDecember 12, 2012Scienceafm, alex weber bargioni, atomic force microscope, atomic microscopy, berkeley lab, color, conversion, data, diederik wiersma, electric energy, electrons, fabrication, far field light, francesca intonti, frank ogletree, geometries, imagery, indium phosphide nanowires, james schuck, jeffrey bokor, mauro meli, multidimensional, nano optics, nanoscale, nanoscale objects, nanoscience, nanospectroscopic imaging, optical fiber, optical spectroscopy, optoelectronic properties, photons, plasmons, shaul aloni, solar, stephano cabrini, sub nanoscale resolution, topological map, wei bao

Berkeley Lab scientists develop a new nanotech tool to probe solar-energy conversion

If nanoscience were television, we’d be in the 1950s. Although scientists can make and manipulate nanoscale objects with increasingly awesome control, they are limited to black-and-white imagery for examining those objects. Information about nanoscale chemistry and interactions with light—the atomic-microscopy equivalent to color—is tantalizingly out of reach to all but the most persistent researchers.

But that may all change with the introduction of a new microscopy tool from researchers at the Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) that delivers exquisite chemical details with a resolution once thought impossible. The team developed their tool to investigate solar-to-electric energy conversion at its most fundamental level, but their invention promises to reveal new worlds of data to researchers in all walks of nanoscience. (more…)

IBM Scientists First to Distinguish Individual Molecular Bonds

By Guest PostSeptember 14, 2012Scienceafm, alejandro criado, atom diameter, atomic force, bandwidth wireless, bond, buckyball, c60, carbon carbon, carbon monoxide, chemical bond, chemical structure, ciqus, co, diego pena, diodes, enrique guitian, graphene, hexagon, ibm, individual molecule, leo gross, light emitting, microscopy, noncontact, oleds, organic, pahs, pentagon, polyaromatic systems, polycyclic aromatic hydrocarbons, scientist, technique

Atomic force microscopy helps scientists to reveal the bond order and length of bonds within molecules

Technique can be used to study future devices made from graphene

Zurich, Switzerland – 14 Sep 2012: IBM scientists have been able to differentiate the chemical bonds in individual molecules for the first time using a technique known as noncontact atomic force microscopy (AFM).

The results push the exploration of using molecules and atoms at the smallest scale and could be important for studying graphene devices, which are currently being explored by both industry and academia for applications including high-bandwidth wireless communication and electronic displays. (more…)

IBM and University of Aberdeen Collaborate to Identify Molecules from the Deep Sea

By Guest PostAugust 2, 20105 commentsScience, Technologyafm, dermacoccus abyssi, ibm, leo gross, marcel jaspars, mariana trench, marine biodiscovery centre, noncontact atomic force microscopy, pacific ocean, sea level, taiwanese orchid, university of aberdeen

–For the first time, atomic force microscopy helps scientists reveal the exact chemical structure of a natural compound

–Using this fast and accurate technique could open new possibilities in drug discovery and treatments

–Compound was extracted from a mud sample taken from the Mariana Trench, 10,916 meters (35,814 feet) below sea level

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Tag Archives: afm

Sanftes Abtasten mit einer Lichtpinzette

Seeing in Color at the Nanoscale

IBM Scientists First to Distinguish Individual Molecular Bonds

IBM and University of Aberdeen Collaborate to Identify Molecules from the Deep Sea