An electron microscope is a microscope that uses a beam of electrons as a source of illumination. They use electron optics that are analogous to the glass lenses of an optical light microscope to control the electron beam, for instance focusing them to produce magnified images or electron diffraction patterns. As the wavelength of an electron can be up to 100,000 times smaller than that of visible light, electron microscopes have a much higher resolution of about 0.1 nm, which compares to about 200 nm for light microscopes. Electron microscope may refer to:
A microscope is a laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic means being invisible to the eye unless aided by a microscope.
The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century. Basic optical microscopes can be very simple, although many complex designs aim to improve resolution and sample contrast.
Transmission electron microscopy (TEM) is a microscopy technique in which a beam of electrons is transmitted through a specimen to form an image. The specimen is most often an ultrathin section less than 100 nm thick or a suspension on a grid. An image is formed from the interaction of the electrons with the sample as the beam is transmitted through the specimen. The image is then magnified and focused onto an imaging device, such as a fluorescent screen, a layer of photographic film, or a sensor such as a scintillator attached to a charge-coupled device.
An X-ray microscope uses electromagnetic radiation in the X-ray band to produce magnified images of objects. Since X-rays penetrate most objects, there is no need to specially prepare them for X-ray microscopy observations.
Peter "Pirre" Wallenberg Sr. was a Swedish business leader who was chairman of Investor AB for ten years.
Knut and Alice Wallenberg Foundation (KAW) is a Swedish public and private foundation formed in 1917 by Knut Agathon Wallenberg and his wife Alice Wallenberg. It was created to support research in the natural sciences, technology and medicine by awarding long-term grants to basic research of the highest international class.
The Nobel Committee for Physics is the Nobel Committee responsible for proposing laureates for the Nobel Prize for Physics. The Nobel Committee for Physics is appointed by the Royal Swedish Academy of Sciences. It usually consists of Swedish professors of physics who are members of the Academy, although the Academy in principle could appoint anyone to the Committee.
Fritiof Stig Sjöstrand was a Swedish physician and histologist born in Stockholm. He started his medical education at Karolinska Institutet in 1933, where he received his Ph.D. Karolinska Institutet in 1944. Sjöstrand worked as an assistant at the department of pharmacology, where he first had used polarization microscopy, he first heard about the new method of electron microscopy in 1938, within which he would become a pioneer. Manne Siegbahn at the Nobel Institute for Physics had planned to build an electron microscope in Sweden, and Sjöstrand got involved in the project to explore its use in medical research. The main challenge was to produce sufficiently thin samples, and Sjöstrand's method for producing ultrathin tissue samples was published in Nature in 1943. However, it seemed that research based on electron microscopy would be too time-consuming for a Ph.D. thesis, so his 1944 thesis was based on fluorescence spectroscopy. In 1947-1948, he received a scholarship to further study electron microscopy at Massachusetts Institute of Technology's Department of Biology. Back in Sweden, he received funding to build up an electron microscopy research laboratory. In 1959, Sjöstrand was both offered a position as professor of histology at Karolinska Institutet, and as professor at University of California, Los Angeles (UCLA). He chose UCLA, because conditions for research and funding were better there.
Ondrej L. Krivanek is a Czech/British physicist resident in the United States, and a leading developer of electron-optical instrumentation. He won the Kavli Prize for Nanoscience in 2020 for his substantial innovations in atomic resolution electron microscopy.
Claes-Göran Sture Granqvist is a materials physicist and Professor of Solid State Physics at Uppsala University in Sweden. Granqvist is considered a pioneer and expert in photochromic materials and energy-efficient building materials such as glass, paint, and wood.
Maximilian Haider is an Austrian physicist.
Harald Rose is a German physicist.
Dame Pratibha Laxman Gai-Boyes is a British microscopist and Professor and Chair of Electron Microscopy and former Director at The York JEOL Nanocentre, Departments of Chemistry and Physics, University of York. She created the atomic-resolution environmental transmission electron microscope (ETEM) and is an outspoken advocate for women with careers in science.
Anna Berit Wallenberg was a Swedish archaeologist, anthropologist, art historian, photographer, and philanthropist. She established a research foundation, the Berit Wallenberg Foundation, that awards funds to these areas. Since its establishment, it has been providing support to cultural heritage institutions, art historians, and archaeologists. In 1936, she became the first Swedish woman to be appointed as a supervisor for the national heritage committee, responsible for the restoration of the Lovö church.
Jacob "Juju" Wallenberg was a Swedish banker and industrial leader. Wallenberg held various central positions in Stockholms Enskilda Bank. He was also chairman of the board of several companies, including Stora Kopparbergs Bergslag and Orkla Mining Company. From 1934 to 1944 he was a member of the Swedish governmental commission for trade with Germany.
Lisbeth Olsson is a Swedish microbiologist and a Professor in industrial biotechnology at Chalmers University of Technology in Gothenburg.
The Austrian Centre for Electron Microscopy and Nanoanalysis is a cooperation between the Institute of Electron Microscopy and Nanoanalysis (FELMI) of the Graz University of Technology (TUG) and the Graz Centre of Electron Microscopy (ZFE), which is a member of Austrian Cooperative Research (ACR) and run by the non-profit association for the promotion of electron microscopy. It is located at the “Neue Technik Steyrergasse” campus in Graz.
Xiaodong Zou is a Chinese-Swedish chemist who is a professor at Stockholm University. Her research considers the development of electron diffraction for the three dimensional characterisation of materials. She is a member of the Nobel Committee for Chemistry. She was elected to the Royal Swedish Academy of Sciences and the Royal Swedish Academy of Engineering Sciences.
Ellen Moons is a Belgian materials scientist who is a professor at Karlstad University. Her research considers the organisation of molecules and materials in thin films. She is mainly interested in organic and hybrid materials for solution processed photovoltaics.
