搜索结果: 1-15 共查到“国际动态 人工晶体”相关记录32条 . 查询时间(2.312 秒)
Using a targeted computational approach, researchers in the Department of Materials Science and Engineering at Cornell have found more than 20 new self-assembled crystal structures, none of which had ...
By bringing together the right materials duking it out, a Cornell-led collaboration has for the first time used voltage to turn on and off a material’s crystal symmetry, thereby controlling its electr...
The mysterious changes in phases of matter – from solid to liquid and back again – have fascinated Eun-Ah Kim since she was in lower elementary school in South Korea. Without cold drinking water readi...
Perovskites hold promise for creating solar panels that could be easily deposited onto most surfaces, including flexible and textured ones. These materials would also be lightweight, cheap to produce,...
碳纳米管手性改造与分子结晶体管研究取得重要进展（图）
半导体 碳纳米管 电学性质
2022/2/17
半导体性碳纳米管具有大长径比、无悬键表面、高载流子迁移率、室温弹道输运等独特结构特征和优异电学性质，因而被认为是十纳米以下高性能、低功耗晶体管沟道材料的有力候选。碳纳米管的导电属性取决于其螺旋（手性）结构，通常制备出的碳纳米管为金属性和半导体性碳纳米管的混合物。虽然近年来碳纳米管的结构控制生长与手性分离研究取得了较大进展，但单根碳纳米管的手性及导电属性调控仍是本领域研究的关键和难点。
Scientists discover a mysterious transition in an electronic crystal（图）
电子晶体 层状化合物 热跨度 电气开关 非易失性存储器
2023/6/7
When temperature changes, many materials undergo a phase transition, such as liquid water to ice, or a metal to a superconductor. Sometimes, a so-called hysteresis loop accompanies such a phase change...
单分子晶体管器件研究取得重要进展
单分子 晶体管器件 电子器件
2021/4/20
当电子器件基本单元--晶体管的尺寸进入到亚纳米尺度，量子效应将越来越显著。探索极端尺度下的晶体管器件并研究其性能和物理机理，对未来信息技术以及介观物理学的发展具有深刻的意义。近期，在国家重点研发计划“纳米科技”重点专项的支持下，中国科学院物理研究所研究团队成功构建了尺寸小于1纳米，由单个分子构成的晶体管器件并实现了功能调控。利用可控烧蚀电极的方法构造纳米金属电极对，把单个酞菁锰分子嵌入其中，门电极...
New property found in unusual crystalline materials（图）
New property crystalline materials
2017/11/23
Most metals and semiconductors, from the steel in a knife blade to the silicon in a solar panel, are made up of many tiny crystalline grains. The way these grains meet at their edges can have a major ...
美造出新物质形态“时间晶体”
时间晶体 物质形态
2017/2/14
提到晶体，普通人可能会想到钻石等物质，其中原子在空间维度上按一定规律重复排列。那有没有晶体的结构能在时间维度上重现呢？这样的晶体就是“时间晶体”，美国研究人员刚刚报告说制造出了这种新的物质形态。
Silicon crystals are the semiconductors most commonly used to make transistors, which are critical electronic components used to carry out logic operations in computing. However, as faster and more po...
New LEDs may offer better way to clean water in remote areas
New LEDs clean water remote areas
2016/11/29
For the first time, researchers have created light-emitting diodes (LEDs) on lightweight flexible metal foil.Engineers at The Ohio State University are developing the foil based LEDs for portable ultr...
Controlling the properties of matter in two-dimensional crystals
Controlling the properties two-dimensional crystals
2016/11/29
By creating atomic chains in a two-dimensional crystal, researchers at Penn State believe they have found a way to control the direction of materials properties in two- and three-dimensional crystals ...
美国开发出世界上最小晶体管
美国 世界 最小晶体管
2016/11/1
2016年10月7日，美国劳伦斯伯克利国家实验室研究团队开发出栅极沟道长度仅为1nm的晶体管，该晶体管利用二硫化钼与碳纳米管材料实现。目前，商用晶体管最小长度约为10nm，这一成果刊登于最新一期的《科学》杂志上。
New Approach to Determining How Atoms Are Arranged in Materials
Atoms Are Arranged Materials
2016/9/12
A Bayesian inference method for refining crystallographic structures is presented. The distribution of model parameters is stochastically sampled using Markov chain Monte Carlo. Posterior probability ...
Berkeley Lab Scientists Grow Atomically Thin Transistors and Circuits
Berkeley Lab Scientists Atomically Thin Transistors Circuits
2016/7/15
In an advance that helps pave the way for next-generation electronics and computing technologies—and possibly paper-thin gadgets —scientists with the U.S. Department of Energy’s Lawrence Berkeley Nati...