Reference Terms
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Radical (chemistry)
In chemistry, radicals (often referred to as free radicals) are atomic or molecular species with unpaired electrons on an otherwise open shell configuration.
Note: The above text is excerpted from the Wikipedia article "Radical (chemistry)", which has been released under the GNU Free Documentation License.
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Matter & Energy News
April 19, 2025
Apr. 11, 2025 — A team of researchers reported the first direct observation of a surprising quantum phenomenon predicted over half a century ago known as a superradiant phase transition, which occurs when two groups of quantum particles begin to fluctuate in a ...
Apr. 9, 2025 — A hopping, insect-sized robot can jump over gaps or obstacles, traverse rough, slippery, or slanted surfaces, and perform aerial acrobatic maneuvers, while using a fraction of the energy required for flying ...
Apr. 7, 2025 — A web platform uses a chatbot to enable any chemist -- including undergraduate chemistry majors -- to configure and execute complex quantum mechanical simulations through ...
Apr. 2, 2025 — Smaller than a grain of rice, new pacemaker is particularly suited to the small, fragile hearts of newborn babies with congenital heart defects. Tiny pacemaker is paired with a small, soft, flexible wearable patch that sits on the patient's chest. ...
Latest Headlines
updated 12:56 pm ET
Apr. 18, 2025 — A team of researchers has developed a new way to control light interactions using a specially engineered structure called a 3D photonic-crystal ...
Apr. 18, 2025 — A research team develops high-power, high-energy-density anode using nano-sized tin particles and hard ...
Apr. 18, 2025 — An international research team has discovered the anomalous Hall effect in a collinear antiferromagnet. More strikingly, the anomalous Hall effect ...
Apr. 18, 2025 — A team has developed a soft, thin-film ABI. The device uses micrometer-scale platinum electrodes embedded in silicone, forming a pliable array just a fraction of a millimeter thick. This novel ...
Apr. 17, 2025 — An international team of physicists has made a significant observation of the BKT phase transition in a 2D dipolar gas of ultracold atoms. This ...
Apr. 17, 2025 — An international team has succeeded in producing new, efficient thermoelectric materials that could compete with state-of-the-art materials, offering greater stability and lower ...
Apr. 17, 2025 — Conventional thinking holds that the metal site in single atom catalysts (SACs) has been a limiting factor to the continued improvement of the design ...
Apr. 17, 2025 — Clathrates are characterized by a complex cage structure that provides space for guest ions too. Now a team has investigated the suitability of ...
Apr. 17, 2025 — A study has found a rare form of one-dimensional quantum magnetism in a metallic compound, offering evidence into a phase space that has remained, ...
Apr. 17, 2025 — Scientists have demonstrated a sort of holographic strip that splits a single laser beam into five bespoke beams that create an optical knot. The work shows that optical knots could be used as a ...