@article { ISI:000283453700016,
	title = {Fowler-nordheim plot behavior and mechanism of field electron emission from ZnO tetrapod structures	},
	journal = {ACS Nano},
	volume = {4},
	number = {10},
	year = {2010},
	month = {OCT},
	pages = {5585-5590},
	publisher = {AMER CHEMICAL SOC},
	address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
	abstract = {<p>Field emission measurements of current-voltage characteristics are reported for tetrapod structures of ZnO. The nonlinear Fowler-Nordheim (FN) plot is analyzed according to a model of calculation based on saturation of conduction band current and predominance of valence band current at high-field values. The simulated FN plot exhibits similar features to those observed experimentally. The model of calculation suggests that the slope variation of the FN plot, in the high-field and low-field regions, does not depend on the magnitude of saturation. Instead, it is a characteristic of the energy band structure and voltage-to-barrier-field conversion factor of the emitting material.</p>},
	keywords = {field emission, Fowler-Nordheim plot, Nanostructures, nonlinearity, ZnO},
	issn = {1936-0851},
	doi = {10.1021/nn1008403},
	author = {Al-Tabbakh, Ahmed A. and More, Mahendra A. and Joag, Dilip S. and Mulla, Imtiaz S. and Pillai, Vijayamohanan K.}
}
@article { ISI:000308879000041,
	title = {Electrochemical preparation of luminescent graphene quantum dots from multiwalled carbon nanotubes},
	journal = {Chemistry-A European Journal},
	volume = {18},
	number = {39},
	year = {2012},
	month = {SEP},
	pages = {12522-12528},
	publisher = {WILEY-V C H VERLAG GMBH},
	address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY},
	abstract = {<p>Green luminescent, graphene quantum dots (GQDs) with a uniform size of 3, 5, and 8.2(+/- 0.3) nm in diameter were prepared electrochemically from MWCNTs in propylene carbonate by using LiClO4 at 90?degrees C, whereas similar particles of 23(+/- 2) nm were obtained at 30?degrees C under identical conditions. Both these sets of GQDs displayed a remarkable quantum efficiency of 6.3 and 5.1?\%, respectively. This method offers a novel strategy to synthesise size-tunable GQDs as evidenced by multiple characterisation techniques like transmission and scanning electron microscopy, atomic force microscopy, Raman spectroscopy and X-ray diffraction (XRD). Photoluminescence of these GQDs can be tailored by size variation through a systematic change in key process parameters, like diameter of carbon nanotube, electric field, concentration of supporting electrolyte and temperature. GQDs are promising candidates for a variety of applications, such as biomarkers, nanoelectronic devices and chemosensors due to their unique features, like high photostability, biocompatibility, nontoxicity and tunable solubility in water.</p>},
	keywords = {electrochemical synthesis, graphene, Nanostructures, photoluminescence, quantum dots},
	issn = {0947-6539},
	doi = {10.1002/chem.201201043},
	author = {Shinde, Dhanraj B. and Pillai, Vijayamohanan K.}
}
