Self assembled monolayers(SAMs) based on a novel dendron thiols system, which maintain the alkanethiols active site, but the —SH group connected with independently variable groups by a dendron linker, showed the co...Self assembled monolayers(SAMs) based on a novel dendron thiols system, which maintain the alkanethiols active site, but the —SH group connected with independently variable groups by a dendron linker, showed the controllable surface pattern and wetting property. The precisely tailored structure of dendron thiols with local controlled hydrophobic and hydrophilic peripheries allow the formation of designed surface structures on gold surface, e.g. nano stripes, honeycomb and homogeneous structure.展开更多
A novel method using a combination of microcontact printing(μCP) technique, surface-directed condensation and surface- directed dewetting has been developed to fabricate patterned polymer films on gold substrates. Th...A novel method using a combination of microcontact printing(μCP) technique, surface-directed condensation and surface- directed dewetting has been developed to fabricate patterned polymer films on gold substrates. These patterned polymer films can serve as resists in the argon ion etching effectively to transfer patterns into the underlying gold substrates. This method is flexible in controlling the shape and feature size of the patterns in the polymer resists by simply adjusting the concentration of polymer solution, and especially it also provides a route to sub-micrometer sized features by using an original template with micrometer sized features.展开更多
美国北卡罗莱纳州立大学（North Carohna State University）的工程师们发现在适当的温度进行热处理，可以在某些有机纳米颗粒表面形成一层聚合物薄膜，而再次热处理又会使它们退回到表面下。将某些粒子带到表面后再让它们沉同去能够实...美国北卡罗莱纳州立大学（North Carohna State University）的工程师们发现在适当的温度进行热处理，可以在某些有机纳米颗粒表面形成一层聚合物薄膜，而再次热处理又会使它们退回到表面下。将某些粒子带到表面后再让它们沉同去能够实现可控表面图案化。该大学化学和生物分子工程教授Jan Genzer、化学和生物分子工程及材料科学和工程教授Richard Spontak称，表面图案化是目前纳米技术研究的“圣杯”之一，对于某砦粒子的处理非常困难。展开更多
文摘Self assembled monolayers(SAMs) based on a novel dendron thiols system, which maintain the alkanethiols active site, but the —SH group connected with independently variable groups by a dendron linker, showed the controllable surface pattern and wetting property. The precisely tailored structure of dendron thiols with local controlled hydrophobic and hydrophilic peripheries allow the formation of designed surface structures on gold surface, e.g. nano stripes, honeycomb and homogeneous structure.
文摘A novel method using a combination of microcontact printing(μCP) technique, surface-directed condensation and surface- directed dewetting has been developed to fabricate patterned polymer films on gold substrates. These patterned polymer films can serve as resists in the argon ion etching effectively to transfer patterns into the underlying gold substrates. This method is flexible in controlling the shape and feature size of the patterns in the polymer resists by simply adjusting the concentration of polymer solution, and especially it also provides a route to sub-micrometer sized features by using an original template with micrometer sized features.
