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128 Current news about the topic electron microscopy

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Catalyst surface analysed at atomic resolution

Particles observed during the catalysis process

12-Jan-2022

Catalyst surfaces have rarely been imaged in such detail before. And yet, every single atom can play a decisive role in catalytic activity. A German-Chinese research team has visualised the three-dimensional structure of the surface of catalyst nanoparticles at atomic resolution. This structure ...

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Light-induced shape shifting of MXenes

Femtosecond light creates switchable nano-waves in MXenes and moves the materials’ atoms at a record-breaking speed

03-Sep-2021

Ultrafast laser spectroscopy allows to observe the motion of atoms at their natural time scales in the range of femtoseconds, the millionth of a billionth of a second. Electron microscopy, on the other hand, provides atomic spatial resolution. By combining electrons and photons in one instrument, ...

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Electrons in quantum liquid gain energy from laser pulses

The findings open new doors for ultra-fast electron microscopy

14-Jul-2021

The absorption of energy from laser light by free electrons in a liquid has been demonstrated for the first time. Until now, this process was observed only in the gas phase. The findings, led by Graz University of Technology, open new doors for ultra-fast electron microscopy. The investigation ...

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The beginning of a new era in resolution

World record: Team of researchers has succeeded in achieving the world's highest electron microscope resolution to date

06-Jul-2021

Scientists at Cornell University (USA) have succeeded in building an electron microscope pixel array detector (EMPAD) with sophisticated 3D reconstruction algorithms that make it possible to multiply the resolution of a state-of-the-art electron microscope. The Leibniz-Institut für ...

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Electromagnetic Fields of Nanostructures Visualized in 3D for the First Time

30-Mar-2021

Researchers at Graz University of Technology (TU Graz) and the University of Graz, together with experts from France, have succeeded in imaging so-called surface phonons in three dimensions for the first time. The research success could accelerate the development of new, efficient ...

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Why do metal oxide surfaces behave differently?

New research method answers important questions

15-Jan-2021

Metal surfaces play a role as catalysts for many important applications - from fuel cells to the purification of car exhaust gases. However, their behaviour is decisively affected by oxygen atoms incorporated into the surface. This phenomenon has been known for a long time, but until now it has ...

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Catalytic activity of individual cobalt oxide nanoparticles determined

Using a robotic arm

16-Dec-2020

Analyzing nanoparticles individually is a challenge precisely because they are so small. A new technique using electron microscopy and a robotic arm could make the process much easier. Precious metal-free nanoparticles could serve as powerful catalysts in the future, for example for hydrogen ...

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Attosecond boost for electron microscopy

Attosecond time resolution in a transmission electron microscope by combining it with a continuous-wave laser achieved

13-Nov-2020

Electron microscopes provide deep insight into the smallest details of matter and can reveal, for example, the atomic configuration of materials, the structure of proteins or the shape of virus particles. However, most materials in nature are not static and rather interact, move and reshape all ...

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Nanopatterns of proteins detected by cryo-electron microscopy

Nanostructures for electronics, catalysis, medicine

22-Oct-2020

A team from Helmholtz-Zentrum Berlin (HZB) used cryo electron microscopy to detect regular, two-dimensional structures in the form of Pascal triangles in a shock frozen protein material. The samples have been synthesized by a Chinese research group. The method of cryo electron microscopy has the ...

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New toolbox for the nanooptics allows the theoretical description to the highest accurate level possible

Physicist demonstrates the dynamics of electron-light interaction originating from first principle

02-Sep-2020

With the highest possible spatial resolution of less than a millionth of a millimetre, electron microscopes make it possible to study the properties of materials at the atomic level and thus demonstrate the realm of quantum mechanics. Quantum-physical fundamentals can be studied particularly well ...

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