01721nas a2200265   4500008004100000022001400041245007400055210006900129260000800198300001200206490000700218520090400225653001901129653001401148653001501162653002701177653001001204100002201214700002401236700002101260700002601281700002601307700002301333856009901356       2018                        eng d  a0935-964800aIn situ nanoparticle embedding for authentication of epoxy composites0 aIn situ nanoparticle embedding for authentication of epoxy compo  cAUG  a18015230 v303 a<p>In situ reduction of chloroauric acid inside an amine-cured epoxy matrix leads to formation of gold nanoparticles which are embedded inside the part. This phenomenon is leveraged to design an authentication system for composites wherein the particles are embedded spatially and are invisible to the naked eye. Under UV light, the particles diffract light and create an easily visible path. The particles penetrate inside the part and create a permanent, cost-effective, tamper-proof code. The advantage of this technique is that this authentication system can be built in composite parts after fabrication of the composite structure. As very small amount (nanograms) of particles are present in the part, negligible change in the thermal characteristics of the parent matrix is observed. The particles can be embedded easily in carbon fiber as well as glass fiber reinforced epoxy structures.</p>10aauthentication10abarcoding10acomposites10aembedded nanoparticles10aEpoxy1 aPansare, Amol, V.1 aKhairkar, Shyam, R.1 aShedge, Amol, A.1 aChhatre, Shraddha, Y.1 aPatil, Vishwanath, R.1 aNagarkar, Amit, A.  uhttps://library.ncl.res.in/content/situ-nanoparticle-embedding-authentication-epoxy-composites