Fluorine gas etches the surface of silicon into a series of angular peaks that, when viewed with a powerful microscope, look much like the pyramid pattern in the sound-proofing foam shown above. Researchers at PPPL have now modeled how these peaks form in silicon, creating a material that is highly light absorbent. Credit: Pixabay/CC0 PublicContinue reading “Black Silicon…”
Author Archives: reginaldgoodwin
Fast Charger…
Significant Li plating capacity from Si anode. a, Li discharge profile in a battery of Li/graphite–Li5.5PS4.5Cl1.5 (LPSCl1.5)–LGPS–LPSCl1.5–SiG at current density 0.2 mA cm–2 at room temperature. Note that SiG was made by mixing Si and graphite in one composite layer. Inset shows the schematic illustration of stages 1–3 based on SEM and EDS mapping, which illustrate the unique Li–SiContinue reading “Fast Charger…”
Bedlam, Swatting, Terrorism…
Image source: CSO online – Swatting Topics: Civics, Civil Rights, Civilization, Climate Change, Existentialism, Fascism, Star Trek Bedlam is a scene of madness, chaos, or great confusion. The term bedlam comes from the name of a hospital in London, “Saint Mary of Bethlehem,” which was devoted to treating the mentally ill in the 1400s. Over time, the pronunciation ofContinue reading “Bedlam, Swatting, Terrorism…”
A Path From Panic…
PAC1R-expressing dorsal raphe neurons in the mouse brain (red) serve as the projection targets for PACAP parabrachial neurons to mediate panic-like behavioral and physical symptoms. Credit: Salk Institute Topics: Biology, Medicine, Research, Science Overwhelming fear, sweaty palms, shortness of breath, rapid heart rate—these are the symptoms of a panic attack, which people with panic disorderContinue reading “A Path From Panic…”
10x > Kevlar…
Scientists have developed amorphous silicon carbide, a strong and scalable material with potential uses in microchip sensors, solar cells, and space exploration. This breakthrough promises significant advancements in material science and microchip technology. An artist’s impression of amorphous silicon carbide nanostrings testing to its limit tensile strength. Credit: Science Brush Topics: Applied Physics, Chemistry, MaterialsContinue reading “10x > Kevlar…”
Scandium and Superconductors…
Scandium is the only known elemental superconductor to have a critical temperature in the 30 K range. This phase diagram shows the superconducting transition temperature (Tc) and crystal structure versus pressure for scandium. The measured results on all the five samples studied show consistent trends. (Courtesy: Chinese Phys. Lett. 40 107403) Topics: Applied Physics, Chemistry, Condensed Matter Physics,Continue reading “Scandium and Superconductors…”
Curated, Created Realities…
Image source: Facebook meme Topics: Civics, Civil Rights, Civilization, Climate Change, Democracy, Existentialism, Fascism What is lost in the above Facebook meme: 5:00 – 5:30 pm was typically your local news. 6:00 – 6:30 pm, before “Bewitched,” was your international news, the Walter Cronkites, Mike Wallaces, and Harry Reasoner’s time to scare the living crapContinue reading “Curated, Created Realities…”
Cooling Circuitry…
Illustration of a UCLA-developed solid-state thermal transistor using an electric field to control heat movement. Credit: H-Lab/UCLA Topics: Applied Physics, Battery, Chemistry, Electrical Engineering, Energy, Thermodynamics A new thermal transistor can control heat as precisely as an electrical transistor can control electricity. From smartphones to supercomputers, electronics have a heat problem. Modern computer chips suffer from microscopicContinue reading “Cooling Circuitry…”
Fusion’s Holy Grail…
A view of the assembled experimental JT-60SA Tokamak nuclear fusion facility outside Tokyo, Japan. JT-60SA.ORG Topics: Applied Physics, Economics, Energy, Heliophysics, Nuclear Fusion, Quantum Mechanics Japan and the European Union have officially inaugurated testing at the world’s largest experimental nuclear fusion plant. Located roughly 85 miles north of Tokyo, the six-story JT-60SA “tokamak” facility heats plasmaContinue reading “Fusion’s Holy Grail…”
‘Teleporting’ Images…
High-dimensional quantum transport enabled by nonlinear detection. In our concept, information is encoded on a coherent source and overlapped with a single photon from an entangled pair in a nonlinear crystal for up-conversion by sum frequency generation, the latter acting as a nonlinear spatial mode detector. The bright source is necessary to achieve the efficiencyContinue reading “‘Teleporting’ Images…”
Physics and Nano 