搜索结果: 1-15 共查到“工学 boron”相关记录27条 . 查询时间(0.075 秒)
Engineers at MIT and the University of Tokyo have produced centimeter-scale structures, large enough for the eye to see, that are packed with hundreds of billions of hollow aligned fibers, or nanotube...
Ultrathin materials made of a single layer of atoms have riveted scientists’ attention since the isolation of the first such material — graphene — about 17 years ago. Among other advances since then, ...
Researchers Integrate Diamond/Boron Nitride Crystalline Layers for Use in High-Power Devices
Researchers Integrate Diamond/Boron Nitride Crystalline Layers High-Power Devices
2016/5/19
We have created a new state of BN (named Q-BN) through rapid melting and super undercooling and quenching by using nanosecond laser pulses. Phase pure c-BN is formed either by direct quenching of supe...
Researchers Discover New Phase of Boron Nitride and a New Way to Create Pure c-BN
Researchers Discover New Phase New Way Create Pure c-BN
2016/2/23
We report a direct conversion of hexagonal boron nitride (h-BN) into pure cubic boron nitride (c-BN) by nanosecond laser melting at ambient temperatures and atmospheric pressure in air. According to t...
Ultrasensitive sensors made from boron-doped graphene
Ultrasensitive sensors boron-doped graphene
2015/11/12
Ultrasensitive gas sensors based on the infusion of boron atoms into graphene -- a tightly bound matrix of carbon atoms -- may soon be possible, according to an international team of researchers from ...
Graphene-like material made of boron a possibility, experiments suggest（图）
Graphene-like material boron
2014/3/18
Graphene, a sheet of carbon one atom thick, may soon have a new nanomaterial partner. In the lab and on supercomputers, chemists have determined that a unique arrangement of 36 boron atoms in a flat d...
Natural Contaminants in Drinking Waters (Arsenic, Boron, Fluorine and Vanadium) in the Southern Pampean Plain, Argentina
Arsenic Fluorine Vanadium Hydrochemistry Risk
2013/3/12
This research aims at making a diagnosis of the presence of arsenic, boron, fluorine and vanadium in the waters from the basin of El Divisorio stream, tributary of Paso de las Piedras reservoir, in th...
Theoretical investigation of methane adsorption onto boron nitride and carbon nanotubes
Theoretical investigation methane adsorption onto boron nitride carbon nanotubes
2010/10/12
Methane adsorption onto single-wall boron nitride nanotubes (BNNTs) and carbon nanotubes (CNTs) was studied using the density functional theory within the generalized gradient approximation. The struc...
Boron systematics of Hisatsu and Kirishima basaltic rocks from southern Kyushu, Japan
boron Philippine Sea plate southern Kyushu subduction zone basalt
2017/8/9
To evaluate the effect of slab-derived fluids from subducted Philippine Sea plate on mantle composition beneath southern Kyushu, we determined the boron (B) contents in basaltic rocks from Hisatsu vol...
Ductilization of Ni3Al by alloying with boron and zirconium
Ni3Al intermetallics Microalloying by B and Zr Ductilization Microstructure Mechanical properties
2010/8/16
The Ni3Al, which has an Ll2 structure, is an ordered compound which can be a very promising candidate for various high temperature applications. The lack of room temperature ductility and high tempera...
Influence of PVA emulsion on leaching of boron and copper from wood and efficacy on wood decay fungi
boron copper fixation Norway spruce PVA emulsion wood preservation
2009/11/27
Boron compounds are very effective fungicides, but they leach from wood in wet environments, unfortunately. In order to improve boron fixation, boric acid, borax and copper(II) sulphate were combined ...
Synthesis of Novel Chelating Adsorbents for Boron Uptake from Aqueous Solutions
boron adsorbent chelating resin uptake capacity
2009/11/13
Two kinds of novel chelating adsorbents have been synthesized to separate boron from aqueous solutions. One is the boron-specific chelating resin, synthesized by the functionalization of macroporous p...
High-aluminium zinc alloy (ZnAl27Cu2) modified with titanium and boron
Zn alloys Modification Structure Mechanical properties
2011/4/1
The paper presents the results of investigations concerning the influence of the titanium-boron modifier quantity on the structure and mechanical properties of ZnAl27Cu2 alloy. The modification has be...
Electronic structure of boron-doped diamond with B–H complex and B pair
superconductivity diamond B–H complex boron pair
2010/10/12
The electronic structure of boron–hydrogen complex and boron pair in diamond are studied by
first-principles density-functional calculations with supercell models. The electronic structure
calculate...
Structure and superconductivity of isotope-enriched boron-doped diamond
boron-doped diamond superconductivity Raman spectroscopy isotope effect
2010/10/12
Superconducting boron-doped diamond samples were synthesized with isotopes of 10B, 11B,
13C and 12C. We claim the presence of a carbon isotope effect on the superconducting
transition temperature, w...