Sponsored by MerckJan 21 2021
Fortuitously discovered by Japanese physicist Sumio Iijima while he was studying the surface of graphite electrodes in an electric arc discharge, Carbon nanotubes (CNTs), simply known as nanotubes, are cylindrical carbon allotrope nanostructures.
1 Since Iijima’s revelation, CNTs have retained a key role in the field of nanotechnology due to their particular electronic, mechanical, and structural properties.
CNTs possess great conductivity and high aspect ratio which enables the formation of a network of conductive tubes. Their exceptional mechanical properties derive from an amalgamation of strength, stiffness and tenacity.
4 Integrated into a polymer, CNTs shift their mechanical load to the polymer matrix at a weight percentage significantly lower than those of carbon black or carbon fibers, promoting applications with greater efficiency.
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IMAGE: From left to right: Favorites sites of oxygen: map of Rh oxidation, measured by Scanning Photoelectron Microscopy (SPEM); in situ Photoemission Electron Microscopy (PEEM) of catalytic hydrogen oxidation on Rh;. view more
Credit: TU WIen
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 not been possible to precisely investigate the role of oxygen in complex surfaces point by point in order to understand the chemical background at the atomic level. This has now been achieved at TU Wien in cooperation with a team from the Elettra Synchrotron in Trieste. It became possible to explain why in previous studies partly contradictory results had been obtained: the oxygen atoms are not distributed evenly, but settle down
The special teacher of Vietnam s youngest associate professor: her mother Chia sẻ | FaceBookTwitter Email Copy Link Copy link bài viết thành công
03/01/2021 18:00 GMT+7
Nguyen Thi Thanh Ha feels fortunate that she was led by many teachers on her journey of self-growth. And the first teacher was her mother.
The lecturer and scientist, who became the youngest associate professor in 2020, has evoked the memories about her mother many times.
Nguyen Thi Thanh Ha
Ten years ago, on the day to defend her thesis for a master’s degree, Ha received the news that her mother was ill. She decided that she would return to the home village to see her mother after the thesis defense ended.