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Allan McLeod Cormack
Allan MacLeod Cormack (February 23, 1924 – May 7, 1998) was a South African American physicist who won the 1979 Nobel Prize in Physiology or Medicine (along with Godfrey Hounsfield) for his work on X-ray computed tomography (CT).
  • 401
  • 18 Oct 2022
Topic Review
Allying Meta-Structures with Diverse Optical Waveguides for Integrated-Photonics
Recent years have witnessed tremendous interest in synergizing various functional subwavelength structures into diverse optical waveguide platforms to enable versatile photonic meta-devices. The advancement of meta-waveguides not only extends meta-optics into the manipulation of guided wave, but may also reshape the landscapes of photonic integrated circuits and massive emergent applications. A recent review paper outlined latest progress on meta-waveguides-based photonics devices and systems. Both forward and inverse designed scenarios are cataloged showcasing vibrant opportunities.
  • 1.1K
  • 13 Dec 2021
Topic Review
Alpha Crucis
Alpha Crucis (α Crucis, abbreviated Alpha Cru, α Cru) is a multiple star system 321 light-years from the Sun in the constellation of Crux and part of the asterism known as the Southern Cross. With a combined visual magnitude of 0.76, it is the brightest star in Crux and the 13th brightest star in the night sky. It is the southernmost first-magnitude star, 2.3 degrees more southerly than Alpha Centauri. To the naked eye Alpha Crucis appears as a single star, but it is actually a multiple star system. Two components are visually distinguishable: α1 Crucis and α2 Crucis; alternatively designated α Crucis A and α Crucis B. Both are B-type stars, and are many times more massive and luminous than the Sun. α1 Crucis is itself a spectroscopic binary with components designated α Crucis Aa (also named Acrux) and α Crucis Ab. Its two component stars orbit every 76 days at a separation of about 1 astronomical unit (au).
  • 725
  • 08 Oct 2022
Topic Review
Amperometric Biosensors and Biofuel Cells
Amperometric biosensors and biofuel cells are mostly based on immobilized enzymes or living cells. Among the many oxidoreductases, glucose oxidase (GOx) is used mostly in biosensor design. The same GOx can be well applied for the development of biofuel cells and self-charging capacitors based on the operation of biofuel cells. 
  • 878
  • 24 Aug 2021
Topic Review
An introduction to the Recent Advances in Nanophotonics
Nanophotonics is an emerging multidisciplinary frontier of science and engineering. Its high potential in contributing to the development of many areas of technology makes nanophotonics a focus of interest for many researchers from different fields.
  • 457
  • 09 Feb 2022
Topic Review
Andhaka
In Hindu mythology, Andhaka (Sanskrit: अन्धक, IAST: andhaka, lit. he who darkens) often refer to a malevolent asura who is killed by Shiva for trying to abduct Parvati. His story finds mention in various Hindu texts, including Matsya Purana, Kurma Purana, Linga Purana and Shiva Purana. He is believed to have thousand heads, two thousand eyes, arms and feet.
  • 3.9K
  • 17 Oct 2022
Topic Review
Andromeda
Andromeda, named after the mythical princess in Greek mythology, is one of the 88 constellations officially recognized by the International Astronomical Union (IAU). Located in the northern celestial hemisphere, Andromeda is renowned for hosting the Andromeda Galaxy (M31), the closest spiral galaxy to our own Milky Way, making it a captivating subject for both amateur stargazers and professional astronomers alike.
  • 358
  • 29 Feb 2024
Topic Review
Angle-Resolved Photoemission Spectroscopy (ARPES)
Angle-resolved photoemission spectroscopy (ARPES) is a vital technique in which spectra are collected from both the energy and momentum of photoemitted electrons and is indispensable for investigating the electronic band structure of solids. 
  • 7.4K
  • 08 Dec 2020
Topic Review
Annus Mirabilis Papers
The Annus mirabilis papers (from Latin annus mīrābilis, "miracle year") are the papers of Albert Einstein published in the Annalen der Physik scientific journal in 1905. These four articles contributed substantially to the foundation of modern physics and changed views on space, time, mass, and energy. The annus mirabilis is often called the "miracle year" in English or Wunderjahr in German. The first paper elucidated the theory of the photoelectric effect; the second paper explained Brownian motion; the third paper introduced special relativity; and the fourth, mass-energy equivalence. Together, these papers substantially advanced the field of modern physics.
  • 721
  • 31 Oct 2022
Topic Review
Anomalous Refraction from Anisotropy Media
The transversely isotropic media with a vertical axis of symmetry (VTI media) has been the most popular model for the sedimentary rocks in the interior of the earth. These rocks are usually isotropic within a given layer but strongly anisotropic from layer to layer. Reflection and refraction of acoustic waves between the adjacent rock layers have profound implications in geophysical applications. We discuss some anomalous reflection phenomena of the acoustic wave at the interface between the layered anisotropic rock media. 
  • 1.6K
  • 03 Nov 2020
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