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1 day ago · 1963 - Jürg Waser introduced restrained least square method, also known as regularized least squares, for crystallographic structure fitting. [162] 1964 - Dorothy Hodgkin won the Nobel Prize for Chemistry "for her determinations by X-ray techniques of the structures of important biochemical substances."
5 days ago · Irvine, Calif., May 21, 2024 — In a study published in Nature Materials, scientists from the University of California, Irvine describe a new method to make very thin crystals of the element bismuth – a process that may make the manufacturing of cheap flexible electronics an everyday reality.
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3 days ago · Photovoltaics ( PV) is the conversion of light into electricity using semiconducting materials that exhibit the photovoltaic effect, a phenomenon studied in physics, photochemistry, and electrochemistry. The photovoltaic effect is commercially used for electricity generation and as photosensors . A photovoltaic system employs solar modules ...
5 days ago · Amy Wu, a Ph.D. candidate in physics in Sanchez-Yamagishi's lab, likened the team's new method to a tortilla press. To make the ultra-thin sheets of bismuth, Wu explained, they had to squish ...
8 hours ago · The integration of the energy storage system into a grid-side converter requires the use of a bi-directional DC–DC converter with a battery controller for the energy storage system in the middle and the dynamic regulation of active and reactive power by taking the limiting value of the power reference value P c v r e f, when it exceeds the ...
4 days ago · In the fabrication of single-domain YBa2Cu3O7−x (YBCO) bulk superconductors, NdBCO is commonly utilized as seed crystals to control the grain orientation in the seeding technique. However, it is extremely difficult to cleave large-size crystal seeds from NdBCO samples. In this paper, different size of GdBCO seed crystals has been successfully used to fabricate the single-domain YBCO bulk ...
2 days ago · Focused on addressing harmonic suppression in multiphase indirect matrix converters (IMCs), this study explores spread-spectrum modulation technology through ripple analysis calculations. We introduce a current ripple spread-spectrum modulation (CR-SSM) method tailored for multiphase IMC systems. In this approach, a 3 × 6-phase IMC is modeled as a two-port network, and a small-signal model of ...
