搜索结果: 31-45 共查到“国际动态 物理化学”相关记录99条 . 查询时间(2.165 秒)
Squeezing Every Drop of Fresh Water from Waste Brine
Squeezing Every Drop Fresh Water Waste Brine
2017/7/21
Engineers at the University of California, Riverside have developed a new way to recover almost 100 percent of the water from highly concentrated salt solutions. The system will alleviate water shorta...
Uncovering the answer to an age-old question:how do snowflakes form?
Uncovering the answer age-old question snowflakes form
2017/7/20
More than 400 years ago, renowned mathematician and scientist Johannes Kepler speculated about the creation of one of nature’s most angelic and unique shapes: the six-sided snowflake. Although atoms w...
Sculpting optical microstructures with slight changes in chemistry
Sculpting optical microstructures slight changes chemistry
2017/4/27
In 2013, materials scientists at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) and the Wyss Institute of Biologically Inspired Engineering grew...
美国斯坦福大学教授崔屹团队日前开发出一种基于半波整流交流电的电化学方法，可从海水中高效提取铀，较之传统的物理化学吸附法，提取能力提升了8倍，速度则提升了3倍。相关成果发表在最新的英国《自然·能源》杂志上。
For the first time,scientists catch water molecules passing the proton baton
first time scientists water molecules proton baton
2016/12/13
Water conducts electricity, but the process by which this familiar fluid passes along positive charges has puzzled scientists for decades.But in a paper published in the Dec. 2 issue of the ...
New Findings Boost Promise of Molybdenum Sulfide for Hydrogen Catalysis
Boost Promise Molybdenum Sulfide Hydrogen Catalysis
2016/12/13
MoS2 presents a promising low-cost catalyst for the hydrogen evolution reaction (HER), but the understanding about its active sites has remained to be limited. Here we present an unambiguous study for...
Energy storage devices called supercapacitors have become a hot area of research, in part because they can be charged rapidly and deliver intense bursts of power. However, all supercapacitors currentl...
Setting the gold standard
Setting gold standard
2016/7/15
A team of University of Florida researchers has figured out how gold can be used in crystals grown by light to create nanoparticles, a discovery that has major implications for industry and cancer tre...
芯片超级电容器又添新材料
芯片超级电容器 添新材料
2016/6/14
多年来，能装在芯片上的微小超级电容一直广受科学家追捧，决定电容器性能的关键是其电极材料，有潜力的“选手”包括石墨烯、碳化钛和多孔碳等。据德国《光谱》杂志网站近日报道，芬兰国家技术研究中心（VTT）研究团队最近把目光转向了一种“不可能”的弱电材料——多孔硅，为了把它变成强大的电容器，团队创新性地在其表面涂了一层几纳米厚的氮化钛涂层，使其性质得以改变。
Nanotubes are beacons in cancer-imaging technique
Nanotubes beacons cancer-imaging technique
2016/5/31
Bathing a patient in LED light may someday offer a new way to locate tumors, according to Rice University researchers.The spectral triangulation system developed by Rice chemist Bruce Weisman and his ...
新技术可快速清除溶液中放射性铯
快速清除溶液 放射性铯
2016/2/29
日本近畿大学教授井原辰彦领导的研究小组日前宣布，他们开发出一种能高速清除溶液中放射性铯的新技术。该技术能将铯离子吸收到尺寸较小的多孔铝电极上。研究小组用东京铝业公司研制的含大量微细孔洞的铝板制作负电极，以碳材料为正电极，形成电路回路。其中的负电极铝板长4厘米、宽1.5厘米，尺寸较小。将上述正负电极放入含放射性铯的溶液并施加100伏电压后，铯原子便会失去外层电子成为阳离子，进而被吸引至负电极并钻入多...
Proven one-step process converts CO2 and water directly into liquid hydrocarbon fuels（图）
converts CO2 water directly liquid hydrocarbon fuels
2016/3/2
A team of University of Texas at Arlington chemists and engineers have proven that concentrated light, heat and high pressures can drive the one-step conversion of carbon dioxide and water directly in...
Chemists at Princeton have developed a new chemical method to introduce valuable alkenes into simple hydrocarbon molecules, a transformation known as dehydrogenation, which is found in important proce...
欧盟研制成功高效紫外发光二极管
欧盟 高效 紫外发光 二极管
2015/12/11
紫外（UV）辐射灯光通常应用于水净化处理行业和水产养殖场，直接杀死有害细菌和加速有机或无机污染物的化学反应中和过程。但目前市场上使用的紫外辐射灯光源含有汞（Mercury）元素成分，将对人体健康和生态环境造成新的风险。欧盟第七研发框架计划{FP7}中小企业主题提供110万欧元，总研发投入140万欧元，由欧盟4个成员国及联系国爱尔兰（总协调）、英国、捷克和挪威，4家创新型中小企业（SMEs）和4家科...
德国科学家发现巨磁电阻新材料磷化铌
德国科学家 巨磁电阻新材料 磷化铌
2015/12/9
德国马普固体化学物理研究所和亥姆霍兹德累斯顿罗森多夫研究中心（HZDR）及荷兰拉德堡大学（Radboud）的科学家共同发现了一种具有超快速电子的新型巨磁电阻材料——磷化铌（NbP）。在研究该材料时，科研人员首次在单一材料上观察到电阻增加近万倍。该材料可用于生产电子元件，在信息技术领域具有巨大的应用潜力。