目前伴随现代电子产品向"轻、薄、小、多功能化"发展,电子器件的高集成化,互连技术从通孔插件(THT)向表面安装(SMT)和芯片安装(CMT)技术发展,加速了高密度(HDI)印制电路技术开发。高密度印制电路加工技术,成为当今印制电路行...目前伴随现代电子产品向"轻、薄、小、多功能化"发展,电子器件的高集成化,互连技术从通孔插件(THT)向表面安装(SMT)和芯片安装(CMT)技术发展,加速了高密度(HDI)印制电路技术开发。高密度印制电路加工技术,成为当今印制电路行业的一个热门话题。目前PCB通孔结构有如下两种:VOI(Via on IVH)结构在层间通孔(IVH)上布设通孔(Via),即在IVH的引出线上布设VIA,呈螺旋形通孔(SprialVia)结构,或直接在IVA上布设通孔。VOV(Viaon Via)结构直接在VIA上布设Via,呈现叠加形状。现通过研究开发新型PCB叠通孔互连方式HIH(Hole In Hole)结构,将更有利于高密度布线设计。论文涉及一种新的印制电路板叠孔布线设计方法,更确切说是印制板埋孔中增加过孔的设计及制造方法。展开更多
Water confined in nanoscale space behaves quite differently from that in the bulk.For example,in biological aquaporins and in carbon nanotubes,the traversing water molecules form a single file configuration.Water woul...Water confined in nanoscale space behaves quite differently from that in the bulk.For example,in biological aquaporins and in carbon nanotubes,the traversing water molecules form a single file configuration.Water would stay in vapor state in extremely hydrophobic narrow nanopores owing to the physicochemical interactions between the water molecules and the surface of the nanopore.A spontaneous wet-dry transition has been identified in both biological and artificial nanopores.The nanopore is either fulfilled with liquid water or completely empty.Based on this mechanism,the wetting and dewetting processes inside nanopores have been further developed into highly efficient nanofluidic gates that can be switched by external stimuli,such as light irradiation,electric potential,temperature,and mechanical pressure.This review briefly covers the recent progress in the special wettability in nanoconfined environment,water transportation through biological or artificial nanochannels,as well as the smart nanofluidic gating system controlled by the water wettability.展开更多
文摘目前伴随现代电子产品向"轻、薄、小、多功能化"发展,电子器件的高集成化,互连技术从通孔插件(THT)向表面安装(SMT)和芯片安装(CMT)技术发展,加速了高密度(HDI)印制电路技术开发。高密度印制电路加工技术,成为当今印制电路行业的一个热门话题。目前PCB通孔结构有如下两种:VOI(Via on IVH)结构在层间通孔(IVH)上布设通孔(Via),即在IVH的引出线上布设VIA,呈螺旋形通孔(SprialVia)结构,或直接在IVA上布设通孔。VOV(Viaon Via)结构直接在VIA上布设Via,呈现叠加形状。现通过研究开发新型PCB叠通孔互连方式HIH(Hole In Hole)结构,将更有利于高密度布线设计。论文涉及一种新的印制电路板叠孔布线设计方法,更确切说是印制板埋孔中增加过孔的设计及制造方法。
基金supported by the National Research Fund for Fundamental Key Projects(Grant No.2011CB935700)the National Natural Science Foundation of China(Grant Nos.11290163,21103201,91127025 and 21121001)the Key Research Program of the Chinese Academy of Sciences(Grant No.KJZD-EW-M01)
文摘Water confined in nanoscale space behaves quite differently from that in the bulk.For example,in biological aquaporins and in carbon nanotubes,the traversing water molecules form a single file configuration.Water would stay in vapor state in extremely hydrophobic narrow nanopores owing to the physicochemical interactions between the water molecules and the surface of the nanopore.A spontaneous wet-dry transition has been identified in both biological and artificial nanopores.The nanopore is either fulfilled with liquid water or completely empty.Based on this mechanism,the wetting and dewetting processes inside nanopores have been further developed into highly efficient nanofluidic gates that can be switched by external stimuli,such as light irradiation,electric potential,temperature,and mechanical pressure.This review briefly covers the recent progress in the special wettability in nanoconfined environment,water transportation through biological or artificial nanochannels,as well as the smart nanofluidic gating system controlled by the water wettability.
