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Hidden images â#drawnâ##by focused laser beam on silicon nanowires could improve optical functionalitiesin a related study published in the journal Scientific Reports on 13 may 2014 Prof Sow led
another team of researchers from the NUS Faculty of science in collaboration with scientists from Hong kong Baptist University to investigate how â#drawingâ##micropatterns on mesoporous silicon nanowires could change the properties of nanowires and advance their applications.
The team scanned a focused laser beam rapidly onto an array of mesoporous silicon nanowires which are packed closely like the tightly woven threads of a carpet.
They found that the focused laser beam could modify the optical properties of the nanowires causing them to emit greenish-blue fluorescence light.
This is the first observation of such a laser-modified behaviour from the mesoporous silicon nanowires to be reported.
 The researchers systematically studied the laser-induced modification to gain insights into establishing control over the optical properties of the mesoporous silicon nanowires.
To put their findings to the test the researchers engineered the functional components of the nanowires with interesting applications.
In the future, nanodevices could use zinc oxide nanowires that draw energy from vibrations such as from the flow of blood
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