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Nestor J. Zaluzec
Nestor J. Zaluzec is an United States of America, American scientist and inventor who works at Argonne National Laboratory. He invented and patented the Scanning Confocal Electron Microscope. and the π Steradian Transmission X-ray Detector for Electron-Optical Beam Lines and Microscopes. Career A Fellow of Oak Ridge National Laboratory (ORNL) , the University of Chicago/CASE and Northwestern University/NAISE collaboratories, Zaluzec has and continues to hold the tripartite role of Senior Scientist, Educator and Inventor at Argonne. As an innovator, his research includes development state-of-the art of instrumentation and techniques for atomic resolution x-ray & electron spectroscopy, and electron microscopy. In addition to creating tools for science, as a researcher he also uses these Bleeding edge technology, bleeding edge technologies to study vexing problems in technologically important materials. His work over the last 40 years at Argonne has included studies in the areas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nestor J
Nestor may refer to: * Nestor (mythology), King of Pylos in Greek mythology Arts and entertainment * "Nestor" (''Ulysses'' episode) an episode in James Joyce's novel ''Ulysses'' * Nestor Studios, first-ever motion picture studio in Hollywood, Los Angeles * ''Nestor, the Long-Eared Christmas Donkey'', a Christmas television program Geography * Nestor, San Diego, a neighborhood of San Diego, California * Mount Nestor (Antarctica), in the Achaean Range of Antarctica * Mount Nestor (Alberta), a mountain in Alberta, Canada People * Nestor (surname), anglicised form of Mac an Adhastair, an Irish family * Nestor (given name), a name of Greek origin, from Greek mythology Science and technology * ''Nestor'' (genus), a genus of parrots * NESTOR Project, an international scientific collaboration for the deployment of a neutrino telescope * NESTOR (encryption), a family of voice encryption devices used by the United States during the Vietnam War era * 659 Nestor, an asteroid S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scanning Confocal Electron Microscope
Scanning confocal electron microscopy (SCEM) is an electron microscopy technique analogous to scanning confocal optical microscopy (SCOM). In this technique, the studied sample is illuminated by a focussed electron beam, as in other scanning microscopy techniques, such as scanning transmission electron microscopy or scanning electron microscopy. However, in SCEM, the collection optics is arranged symmetrically to the illumination optics to gather only the electrons that pass the beam focus. This results in superior depth resolution of the imaging. The technique is relatively new and is being actively developed. History The idea of SCEM logically follows from SCOM and thus is rather old. However, practical design and construction of scanning confocal electron microscope is a complex problem first solved by Nestor J. Zaluzec. His first scanning confocal electron microscope demonstrated the 3D properties of the SCEM, but have not realized the sub-nanometer lateral spatial resolutio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microanalysis
Microanalysis is the chemical identification and quantitative analysis of very small amounts of chemical substances (generally less than 10 mg or 1 ml) or very small surfaces of material (generally less than 1 cm2). One of the pioneers in the microanalysis of chemical elements was the Austrian Nobel Prize winner Fritz Pregl.http://nobelprize.org/nobel_prizes/chemistry/laureates/1923/index.html ''The Nobel Prize in Chemistry 1923''. Nobelprize.org. Retrieved 2014-08-06 Methods The most known methods used in microanalysis include: * Most of the spectroscopy methods: ultraviolet–visible spectroscopy, infrared spectroscopy, nuclear magnetic resonance, X-ray fluorescence, Energy-dispersive X-ray spectroscopy, Wavelength-dispersive X-ray spectroscopy, and mass spectrometry * Most of the chromatography methods : high-performance liquid chromatography, Gel permeation chromatography; * Some thermal analysis methods: differential scanning calorimetry, thermogravimetric ana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microscopy Listserver
The Microscopy Society of America (MSA) was founded in 1942 as The Electron Microscope Society of America and is a non-profit organization that provides microanalytical facilities for studies within the sciences. Currently, there are approximately 3000 members. The society holds an annual meeting, which is usually held in the beginning of August. It has 30 local affiliates across the United States. The society has a program for examining and certifying technologists of electron microscopes. The organization produces two journals: Microscopy Today, and Microscopy and Microanalysis. As of 2022, the President is Deborah F. Kelly. Microscopy Listserver The Microscopy Listserver is a network based discussion forum giving members of the scientific community a centralized Internet address to which questions/comments/answers in the various fields of Microscopy or Microanalysis can be rapidly distributed to a list of (subscribed) individuals by electronic mail. There are in excess of 300 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Illinois University
Northern Illinois University (NIU) is a Public university, public research university in DeKalb, Illinois. It was founded as Northern Illinois State Normal School on May 22, 1895, by Illinois Governor John P. Altgeld as part of an expansion of the state's system for producing college-educated teachers. In addition to the main campus in DeKalb, it has satellite centers in Chicago, Naperville, Illinois, Naperville, Rockford, Illinois, Rockford, and Oregon, Illinois. The university is composed of seven Academic degree, degree-granting colleges and has a student body of approximately 16,000 with over 240,000 alumni. NIU is one of only two public universities in Illinois that compete in the National Collegiate Athletic Association at the highest levels of all sports, NCAA Division I, Division I. The university's athletic teams are known as the Northern Illinois Huskies, Huskies and compete in the Mid-American Conference (MAC). History Northern Illinois University was founded as p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UIUC
The University of Illinois Urbana-Champaign (U of I, Illinois, University of Illinois, or UIUC) is a public land-grant research university in Illinois in the twin cities of Champaign and Urbana. It is the flagship institution of the University of Illinois system and was founded in 1867. Enrolling over 56,000 undergraduate and graduate students, the University of Illinois is one of the largest public universities by enrollment in the country. The University of Illinois Urbana-Champaign is a member of the Association of American Universities and is classified among "R1: Doctoral Universities – Very high research activity". In fiscal year 2019, research expenditures at Illinois totaled $652 million. The campus library system possesses the second-largest university library in the United States by holdings after Harvard University. The university also hosts the National Center for Supercomputing Applications and is home to the fastest supercomputer on a university campus. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illinois Institute Of Technology
Illinois Institute of Technology (IIT) is a private research university in Chicago, Illinois. Tracing its history to 1890, the present name was adopted upon the merger of the Armour Institute and Lewis Institute in 1940. The university has programs in architecture, business, communications, design, engineering, industrial technology, information technology, law, psychology, and science. It is classified among "R2: Doctoral Universities – High research activity". The university's historic roots are in several 19th-century engineering and professional education institutions in the United States. In the mid 20th century, it became closely associated with trends in modernist architecture through the work of its Dean of Architecture Ludwig Mies van der Rohe, who designed its campus. The Institute of Design, Chicago-Kent College of Law, and Midwest College of Engineering were also merged into Illinois Tech. History The Sermon and The Institute In 1890, when advanced education wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microscopy Society Of America
The Microscopy Society of America (MSA) was founded in 1942 as The Electron Microscope Society of America and is a non-profit organization that provides microanalytical facilities for studies within the sciences. Currently, there are approximately 3000 members. The society holds an annual meeting, which is usually held in the beginning of August. It has 30 local affiliates across the United States. The society has a program for examining and certifying technologists of electron microscopes. The organization produces two journals: Microscopy Today, and Microscopy and Microanalysis. As of 2022, the President is Deborah F. Kelly. Microscopy Listserver The Microscopy Listserver is a network based discussion forum giving members of the scientific community a centralized Internet address to which questions/comments/answers in the various fields of Microscopy or Microanalysis can be rapidly distributed to a list of (subscribed) individuals by electronic mail. There are in excess of 30 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
R&D 100 Award
Research and development (R&D or R+D), known in Europe as research and technological development (RTD), is the set of innovative activities undertaken by corporations or governments in developing new services or products, and improving existing ones. Research and development constitutes the first stage of development of a potential new service or the production process. R&D activities differ from institution to institution, with two primary models of an R&D department either staffed by engineers and tasked with directly developing new products, or staffed with industrial scientists and tasked with applied research in scientific or technological fields, which may facilitate future product development. R&D differs from the vast majority of corporate activities in that it is not intended to yield immediate profit, and generally carries greater risk and an uncertain return on investment. However R&D is crucial for acquiring larger shares of the market through the marketisation o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steradian
The steradian (symbol: sr) or square radian is the unit of solid angle in the International System of Units (SI). It is used in three-dimensional geometry, and is analogous to the radian, which quantifies planar angles. Whereas an angle in radians, projected onto a circle, gives a ''length'' on the circumference, a solid angle in steradians, projected onto a sphere, gives an ''area'' on the surface. The name is derived from the Greek 'solid' + radian. The steradian, like the radian, is a dimensionless unit, the quotient of the area subtended and the square of its distance from the centre. Both the numerator and denominator of this ratio have dimension length squared (i.e. , dimensionless). It is useful, however, to distinguish between dimensionless quantities of a different nature, so the symbol "sr" is used to indicate a solid angle. For example, radiant intensity can be measured in watts per steradian (W⋅sr−1). The steradian was formerly an SI supplementary unit, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diffraction
Diffraction is defined as the interference or bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture. The diffracting object or aperture effectively becomes a secondary source of the propagating wave. Italian scientist Francesco Maria Grimaldi coined the word ''diffraction'' and was the first to record accurate observations of the phenomenon in 1660. In classical physics, the diffraction phenomenon is described by the Huygens–Fresnel principle that treats each point in a propagating wavefront as a collection of individual spherical wavelets. The characteristic bending pattern is most pronounced when a wave from a coherent source (such as a laser) encounters a slit/aperture that is comparable in size to its wavelength, as shown in the inserted image. This is due to the addition, or interference, of different points on the wavefront (or, equivalently, each wavelet) that travel by paths of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
