Modification of peptide sequence offers versatile control over their self-organization capability within adlayers adsorbed on surfaces. However, to gain full the self-organization, clear links between and lateral ordering in these must be established. Using molecular dynamics simulations WA or AW dipeptides, spontaneous emergence ordered nano-patterns containing neutral, zwitterion, neutral-zwi...

Semiconductor International (Aug. 1) -In work at the U. of I., researchers used nanoimprint lithography and carbon nanotubes to replicate features with nanometer dimensions. "We were able to demonstrate reliable patterning at the 2nm scale, and even some capability down to 1nm," said John Rogers, a professor of materials science and engineering at U of I. more... ***** Copyright 2006 Reed Busin...

Besides its interesting physical properties, graphene as a two-dimensional lattice of carbon atoms promises to realize devices with exceptional electronic properties, where freely suspended graphene without contact to any substrate is the ultimate, truly two-dimensional system. The practical realization of nano-devices from suspended graphene, however, relies heavily on finding a structuring me...

Nanoscale science and technology has today mainly focused on the fabrication of nano devices. In this paper, we study the use of lithography process to build the desired nanostructures directly. Nanolithography on polymethylmethacrylate (PMMA) surface is carried out by using Atomic Force Microscope (AFM) equipped with silicon tip, in contact mode. The analysis of the results shows that the ...

Cell shape in vitro can be directed by geometrically defined micropatterned adhesion substrates. However conventional methods are limited by the fixed micropattern design, which cannot recapitulate the dynamic changes of the cell microenvironment. Here, we manipulate the shape of living cells in real time by using a tightly focused pulsed laser to introduce additional geometrically defined adhe...