@article { ISI:000352448800019,
	title = {Self-assembled vertically aligned gold nanorod super-lattices for ultra-high sensitive detection of molecules},
	journal = {Nano Research},
	volume = {8},
	number = {3},
	year = {2015},
	month = {MAR},
	pages = {907-919},
	publisher = {TSINGHUA UNIV PRESS},
	address = {TSINGHUA UNIV, RM A703, XUEYAN BLDG, BEIJING, 10084, PEOPLES R CHINA},
	abstract = {<p>We show that self-assembled vertically aligned gold nanorod (VA-GNRs) superlattices can serve as probes or substrates for ultra-high sensitive detection of various molecules. D-glucose and 2,4,6-trinitrotoluene (TNT) have been chosen as model systems due to their very low Raman cross-sections (5.6 x 10(-30) cm(2).molecule(-1).sr(-1) for D-glucose and 4.9 x 10(-31) cm(2). molecule(-1).sr(-1) for TNT) to show that the VA-GNR superlattice assembly offers as low as yoctomole sensitivity. Our experiment on mixed samples of bovine serum albumin (BSA) and D-glucose solutions demonstrate sensitivity for the latter, and the possible extension to real samples. Self-assembled superlattices of VA-GNRs were achieved on a silicon wafer by depositing a drop of solvent containing the GNRs and subsequent solvent evaporation in ambient conditions. An additional advantage of the VA-GNR monolayers is their extremely high reproducible morphology accompanied by ultrahigh sensitivity which will be useful in many fields where a very small amount of analyte is available. Moreover the assembly can be reused a number of times after removing the already present molecules. The method of obtaining VA-GNRs is simple, inexpensive and reproducible. With the help of simulations of monolayers and multilayers it has been shown that superlattices can achieve better sensitivity than monolayer assembly of VA-GNRs.</p>},
	keywords = {Nanostructures, Raman spectroscopy, self-assemblies, sensors, superlattices},
	issn = {1998-0124},
	doi = {10.1007/s12274-014-0572-2},
	author = {Apte, Amey and Bhaskar, Prashant and Das, Raja and Chaturvedi, Smita and Poddar, Pankaj and Kulkarni, Sulabha}
}
