/ en-us 糖心视频 internet news portal provides the latest news on science including: 糖心视频ics, 糖心视频, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. DNA is the hereditary material in the nucleus of all cells in humans and other living organisms. Besides its significance in biology, DNA has also played a specific role in controlling many physical devices. Recently, an international research team at Nanyang Technological University, Singapore, has demonstrated the concept of a switchable microlaser by taking advantage of the organic biomolecule DNA hybridization process. /news/2020-11-lasers-dna.html Bio & Medicine Nanomaterials Wed, 11 Nov 2020 10:20:01 EST news524312398 Liquid crystals differ from isotropic fluids (fluids with similar properties in different directions) to exhibit highly anisotropic (varying properties in different directions) interactions with surfaces. In a new report on Science Advances, Haridas Mundoor and an interdisciplinary research team in the departments of physics and soft materials research, electrical, computer and energy engineering in the U.S., controlled the surface alignment of nematic molecules (strong scatterers of light due to thermal fluctuations within liquid crystals). By controlling the ionic content, the scientists tuned the orientations of the shape-anisotropic, platelet-like particles. The resulting anisotropic, elastic and electrostatic interactions facilitated colloidal crystals with reconfigurable symmetries and orientations. They harnessed the competing aligning effects of surface functionalization and the electric field that arose due to experimental surface charging and bulk counterions within the setup. /news/2019-09-electrostatically-surface-boundary-conditions-nematic.html Materials Science Thu, 26 Sep 2019 09:40:01 EDT news488702326 Oscillating flow and light pulses can be used to create reconfigurable architecture in liquid crystals. Materials scientists can carefully engineer concerted microfluidic flows and localized optothermal fields to achieve control on nucleation , growth and shape of such liquid domains. In comparison, pure liquids in thermodynamic equilibrium are structurally homogeneous. Experimental work based on theory and simulations have shown that if the liquids are maintained in a controlled state of nonequilibrium, the resulting structures can be indefinitely stabilized. /news/2019-02-sculpting-stable-pure-liquids.html General 糖心视频ics Soft Matter Thu, 21 Feb 2019 09:30:06 EST news469873756 A team of scientists from Kirensky Institute of 糖心视频ics of the Siberian Branch of Russian Academy of Science and Siberian Federal University (SFU) together with Russian and foreign colleagues studied droplets of a cholesteric liquid crystal that contained a twisted defect loop. The results of the study were published in Scientific Reports. /news/2018-02-scientists-complex-defects-droplets-liquid.html Condensed Matter Mon, 05 Feb 2018 05:42:25 EST news437031735 A need for fast, solution-based processing of organic electronic devices has sparked increased interest in 'discotic' or disc-shaped liquid crystals. These molecules, which contain a flat aromatic core surrounded by hydrocarbon side chains, can spontaneously pile into column-like structures that could be ideal for one-way charge transport. Research led by Takashi Kajitani and Takanori Fukushima from the RIKEN Advanced Science Institute has now revealed a way to turn individual discotic columns into liquid crystal films with unprecedented hierarchical order in two dimensions. /news/2013-05-liquid-crystal-reckon.html Materials Science Thu, 02 May 2013 08:50:01 EDT news286702318