We reported sonication-mediated film assembly of gold nanoparticles at a water/hexane interface used as a surface-enhanced Raman scattering(SERS) substrate.Gold colloids/hexane biphasic system was emulsified by sonica...We reported sonication-mediated film assembly of gold nanoparticles at a water/hexane interface used as a surface-enhanced Raman scattering(SERS) substrate.Gold colloids/hexane biphasic system was emulsified by sonication,and then the emulsions were left undisturbed to allow natural breaking emulsions.In the end,gold nanoparticle films were formed at the interface.The interfacial nanoparticle films can be easily transferred onto a Cu grid and Si wafer for transmission electron microscopy(TEM) and SERS characterizations,respectively.TEM image shows that the as-formed gold nanoparticle films are of a monolayer structure without notable aggregates.SERS measurements indicate that when the gold nanoparticle films were used as SERS substrates to detect 4-MPY,the detection limit can be reached to 1×10-8 mol/L.展开更多
针对光缆应用到船舶通信系统中占用空间大,二次敷设增加工作量等问题,研制出光电复合缆,为解决此问题提供了一个比较理想的方案。重点介绍了船用光纤复合低压电缆的低烟/无卤、耐低温、阻燃及耐火等主要技术性能,同时以规格型号为0.6/1 ...针对光缆应用到船舶通信系统中占用空间大,二次敷设增加工作量等问题,研制出光电复合缆,为解决此问题提供了一个比较理想的方案。重点介绍了船用光纤复合低压电缆的低烟/无卤、耐低温、阻燃及耐火等主要技术性能,同时以规格型号为0.6/1 k V FPBUCU 2G 62.5/125 3.1B200+0.8F600+2×2.5的电缆为例,叙述了船用光纤复合低压电缆的设计及工艺流程。展开更多
文摘We reported sonication-mediated film assembly of gold nanoparticles at a water/hexane interface used as a surface-enhanced Raman scattering(SERS) substrate.Gold colloids/hexane biphasic system was emulsified by sonication,and then the emulsions were left undisturbed to allow natural breaking emulsions.In the end,gold nanoparticle films were formed at the interface.The interfacial nanoparticle films can be easily transferred onto a Cu grid and Si wafer for transmission electron microscopy(TEM) and SERS characterizations,respectively.TEM image shows that the as-formed gold nanoparticle films are of a monolayer structure without notable aggregates.SERS measurements indicate that when the gold nanoparticle films were used as SERS substrates to detect 4-MPY,the detection limit can be reached to 1×10-8 mol/L.
文摘针对光缆应用到船舶通信系统中占用空间大,二次敷设增加工作量等问题,研制出光电复合缆,为解决此问题提供了一个比较理想的方案。重点介绍了船用光纤复合低压电缆的低烟/无卤、耐低温、阻燃及耐火等主要技术性能,同时以规格型号为0.6/1 k V FPBUCU 2G 62.5/125 3.1B200+0.8F600+2×2.5的电缆为例,叙述了船用光纤复合低压电缆的设计及工艺流程。
