02050nas a2200277   4500008004100000022001400041245007300055210006900128260007300197300001400270490000700284520108200291653002401373653003701397653002901434653002101463653001301484653003101497100002501528700002401553700002101577700002601598700002201624700002201646856010401668       2011                        eng d  a0167-577X00aSynthesis of cube-shaped gold nanostructures by electron irradiation0 aSynthesis of cubeshaped gold nanostructures by electron irradiat  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUN  a1605-16070 v653 a<p>The needle-like gold nanostructures were synthesized by using chloroauric acid (HAuCl(4)) as a metal precursor and sodium borohydride (NaBH(4)) as the reducing agent. These needle-like nanostructures of gold were irradiated with high energy electrons (E-6 MeV, phi similar to 10(12) e cm(-2) s(-1)). The pre- and post-irradiated gold nanostructures were characterized by Scanning Electron Microscopy (SEM), UV-vis spectroscopy, X-ray Diffraction (XRD) and contact angle measurement (GBX-Model Digidrop) techniques. The results of the SEM revealed that after electron irradiation, the needle-like gold structures got fragmented into identical cube-shaped gold nanostructures, though of different sizes. The XRD analysis indicated that the average crystallite size of the gold nanostructures remained unchanged even after irradiation with high energy electrons. A glass surface showed hydrophilic behavior when coated with needle-like nanostructures and became ultra hydrophilic when coated with cube-shaped gold nanostructures. (C) 2011 Elsevier B.V. All rights reserved.</p>10aGold nanostructures10aHigh energy electron irradiation10aNanostructured materials10aRadiation damage10aSurfaces10aUltra hydrophilic surfaces1 aDhumale, Vinayak, A.1 aGangwar, Rajesh, K.1 aShah, Preeti, V.1 aBhoraskar, Vasant, N.1 aMulla, Imtiaz, S.1 aSharma, Rishi, B.  uhttps://library.ncl.res.in/content/synthesis-cube-shaped-gold-nanostructures-electron-irradiation-0