silicon
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Nanotechnology
Quantum confinement explains a dramatic increase in electrical resistivity in silicon sheets of several nanometers thick
Schematic diagram of semiconductor ultra-thin film credits: alessio zaccone with chatgpt Consumer electronics are primarily made from silicon, germanium, copper, and materials that have been used for over 60 years. Why is semiconductor electronics becoming faster and faster this time? I argue that this is due to miniaturization or the ability to stack more and more transistors in tightly integrated…
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Chemistry
Development with industrial potential with silicon nitride-based electromagnetic metamaterials
Graphical abstract. Credit: Journal of Advanced Ceramics (2025). doi:10.26599/jac.2025.9221037 Electromagnetic metamaterials with negative physical parameters such as negative dielectric constant and negative magnetic permeability have attracted widespread attention in the academic community. In 2010, they were praised for today’s material as one of the top ten advancements in materials science over the past 50 years. Unlike traditional electromagnetic materials, it…
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Nanotechnology
Combine silicon and 2D materials to achieve new semiconductor technology with high energy efficiency
Graphical summary. Credit: ACS Nano (2025). Doi: 10.1021/acsnano.4c15271 Nanoelectronics handles very small electronic components that fit the tip of the needle, that is, transistors, sensors, and circuits. This technology supplies power to our daily lives through devices such as computers, smartphones, and medical tools. In order to improve the efficiency and power of these devices, scientists are looking for an…
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Nanotechnology
Due to the action of light, pure silicon changes from an indirect bandgap semiconductor to a direct bandgap semiconductor.
Credit: ACS Nano (2024). DOI: 10.1021/acsnano.4c02656 Research led by the University of California, Irvine has found that the optical properties of materials can be dramatically improved by imparting new properties to light, rather than changing the material itself. The researchers have demonstrated that by manipulating the momentum of incoming photons, they can fundamentally change the way light interacts with matter.…
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