02052nas|a2200265 a 450000500170000000800410001703500150005810000220007324500760009526000670017130000180023849000270025650001390028350200580042252009400048065000180142065000190143865000130145770000330147070000410150370000530154471000650159781000590166285600650172120260818114333.0060223s2005    th uu|m rtt   0|  a1eng d  a.b119815071 aSugunan, Abhilash10aFormation and potential uses of glutamate-stabilized gold nanoparticles  aPathum Thani, Thailand :bAsian Institute of Technology,c2005  a47 p. :bill.1 aThesis ;vno. ME-05-04  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies  aThesis (M.Eng.) - Asian Institute of Technology, 2005  aFormation of stable colloids of gold nanoparticles in aqueous systems has been studied leading to the development of a phenomenological explanation for the process. To this end, a size selective synthesis of stable gold nanoparticles dispersed in water has been reported with a novel reducing agent, monosodium glutamate. The effect of concentration of cations in the medium on the shape and uniformity of the final particles has been demonstrated. A novel strategy for a colorimetric sensor for quantitative analysis of heavy metal ions in water has been developed, by surface modification of the nanoparticles synthesized by the proposed method. Colloids containing polymer-protected nanoparticles are shown to strongly absorb wavelengths in the near infrared range, suggesting possible applications as optical filters. Self-assembly of colloidal gold nanoparticles into micro-wires have been achieved employing biological templates. 0aNanoparticles 0aColloidal gold 0aColloids1 aDutta, Joydeep,eChairperson1 aSharma, A.B.,eExamination Committee0 aChanchana Thanachayanont,eExamination committee2 aAsian Institute of Technology Fellowship,eScholarship donor2 aAsian Institute of Technology.tThesis ;vno. ME-05-04  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B09815