TECH FRONT


beam of light, or multiple beams of light, allowing them to create a wide variety of nanostructure designs. The scientists also showed that they can get the nanospheres to self-assemble in a regularly-spaced array, which in turn can be used to create a uniform pattern of 3-D nanostructures.


A variety of asymmetric hollow-core 3D nanostructures fabricated by illuminating light on nanoparticles.


the nanolithography by altering the size of the nanosphere, the duration of light exposures, and the angle, wavelength and polarization of light. The researchers can also use one


“This could be used to create an array of nanoneedles for use in drug delivery or other applications,” says Xu Zhang, a PhD student in Chang’s lab and lead author of the paper, “Sculpt- ing Asymmetric Hollow-Core Three- Dimensional Nanostructures Using Col- loidal Particles,” was published online


Dec. 8 in the journal Small. To see an abstract of the paper, go to http://onlinelibrary. wiley.com/doi/10.1002/smll.201402750/abstract.


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Image courtesy Xu Zhang


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