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New Sensor Detects Ever Smaller Nanoparticles

Novel Optical Resonator Can Track the Movement of Nanoparticles in Space

15-Nov-2021

Nanoparticles are omnipresent in our environment: Viruses in ambient air, proteins in the body, as building blocks of new materials for electronics, or in surface coatings. Visualizing these smallest particles is a problem: They are so small that they can hardly be seen under an optical ...

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Super-Resolution RNA Imaging in Live Cells

Innovative method provides new insight into molecular processes involving RNA

02-Mar-2021

Ribonucleic acid (RNA) is key to various fundamental biological processes. It transfers genetic information, translates it into proteins or supports gene regulation. To achieve a more detailed understanding of the precise functions it performs, researchers based at Heidelberg University and at ...

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Three-dimensional View of Catalysts in Action

Operando X-ray Spectroscopy Brings New Opportunities for Materials and Reaction Diagnostics

18-Dec-2020

For understanding the structure and function of catalysts in action, researchers of Karlsruhe Institute of Technology (KIT), in cooperation with colleagues from the Swiss Light Source SLS of Paul Scherrer Institute (PSI) in Switzerland and the European Synchrotron Radiation Facility (ESRF) in ...

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“Stretching Rack” for Cells

An ingenious device, only a few micrometers in size, enables to study the reaction of individual biological cells to mechanical stress

28-Sep-2020

The behavior of cells is controlled by their environment. Besides biological factors or chemical substances, physical forces such as pressure or tension are also involved. Researchers from Karlsruhe Institute of Technology (KIT) and Heidelberg University developed a method that enables them to ...

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Scientists observe nanowires as they grow

X-ray experiments reveal exact details of self-catalysed growth for the first time

12-Feb-2018

At DESY's X-ray source PETRA III, scientists have followed the growth of tiny wires of gallium arsenide live. Their observations reveal exact details of the growth process responsible for the evolving shape and crystal structure of the crystalline nanowires. The findings also provide new ...

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Tiny lasers from a gallery of whispers

21-Sep-2017

Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a phenomenon similar to an effect observed in circular galleries, such as in some cathedrals or museums, where sound waves travel across the ...

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Background suppression for super-resolution light microscopy

01-Feb-2017

Optical microscopy is applied widely in the life sciences sector. Among others, it is used to minimally invasively examine living cells. Resolution of conventional light microscopy, however, is limited to half the wavelength of light, i.e. about 200 nm, such that finest cellular structures are ...

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More accurate modelling of electron transfer in DNA

21-Mar-2013

Scientists using computational techniques to look at processes in DNA have employed a surface-hopping approach to predict the degree of charge localisation across nucleobases. The technique should allow more accurate modeling of the effects of charge transfer within the molecule. Different ...

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Nanoparticles digging the world’s smallest tunnels

25-Jan-2013

The world’s smallest tunnels have a width of a few nanometers only. Researchers from Karlsruhe Institute of Technology (KIT) and Rice University, USA, have dug such tunnels into graphite samples. This will allow structuring of the interior of materials through self-organization in the nanometer ...

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Processes at the Surface of Catalysts

Using Infrared Spectroscopy, Scientists Detect that Oxygen Defects Act as Active Centers

12-Apr-2012

In chemical industry, heterogeneous catalysis is of crucial importance to the manufacture of basic or fine chemicals, in catalytic converters of exhaust gas, or for the chemical storage of solar energy. Scientists of Karlsruhe Institute of Technology (KIT) and Ruhr-Universität Bochum (RUB) have ...

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