Charge transport through redox active [H7P8W48O184]33- polyoxometalates self-assembled onto gold surfaces and gold nanodots [PDF]
Nanoscale 11, 1863-1878 (2019), 2019 Polyoxometalates (POMs) are redox-active molecular oxides, which attract growing interest for their integration into nano-devices, such as high-density data storage non-volatile memories. In this work, we investigated the electrostatic deposition of the negatively charged [H7P8W48O184]33- POM onto positively charged 8-amino-1-octanethiol self-assembled
arxiv +1 more source
Ultrathin and ultrasmooth gold films on monolayer MoS2 [PDF]
Adv. Mater. Interfaces (2019) 1900196, 2018 Sub-10 nm continuous metal films are promising candidates for flexible and transparent nanophotonics and optoelectronics applications. In this Letter, we demonstrate that monolayer MoS2 is a perspective adhesion layer for the deposition of continuous conductive gold films with a thickness of only 3-4 nm.
arxiv +1 more source
A test of the viability of fluid-wall rock interaction mechanisms for changes in opaque phase assemblage in metasedimentary rocks in the Kambalda-St. Ives goldfield, Western Australia [PDF]
, 2009 Transitions from pyrrhotite-magnetite- to pyrite-magnetite- and pyrite-hematite-bearing assemblages in metasedimentary rocks in the Kambalda-St Ives goldfield have been shown to be spatially associated with economic gold grades. Fluid mixing, fluid-rock
Evans, Katy
core +1 more source
Известия Томского политехнического университета: Инжиниринг георесурсов, 2019 The relevance of the research is caused by the necessity of working up the geology-genetic theory of hydrothermal gold deposits formation instead of the four hypotheses granitogene, basaltogene, metamorphogene, polygene excepting one another.
Igor Kucherenko
doaj +2 more sources
Local Measurement of Microwave Response with Local Tunneling Spectra Using Near Field Microwave Microscopy [PDF]
Applied Physics Express 2 (2009) 025006, 2010 We have designed and built a near-field scanning microwave microscope, which has been used to measure the local microwave response and the local density-of-states (LDOS) in the area including the boundary between the gold deposited and the non-deposited region on highly-orientated pyrolytic graphite at a frequency of about 7.3 GHz. We have succeeded in
arxiv +1 more source
Hydrothermal gold mineralization and structural controls near May Hibey, Northwestern Tigray, Northern Ethiopia [PDF]
, 2017 Ezana Mining Development Company has recently reported presence of gold mineralization near May Hibey area, western Tigray, northern Ethiopia. It is in association with hydrothermal quartz veins within the Neoproterozoic low grade basement rocks ...
Giday, Mickiale, Konka, Bheemalingeswara
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Polarization dependent, surface plasmon induced photoconductance in gold nanorod arrays [PDF]
, 2013 We report on the photoconductance in two-dimensional arrays of gold nanorods which is strongly enhanced at the frequency of the longitudinal surface plasmon of the nanorods. The arrays are formed by a combination of droplet deposition and stamping of gold nanorod solutions on SiO2 substrates.
arxiv +1 more source
Thickness-Dependent Morphologies of Gold on N-Layer Graphenes [PDF]
, 2011 We report that gold thermally deposited onto n-layer graphenes interacts differently with these substrates depending on the number layer, indicating the different surface properties of graphenes. This results in thickness-dependent morphologies of gold on n-layer graphenes, which can be used to identify and distinguish graphenes with high throughput ...
arxiv +1 more source
The fluid history of the Seabee mesothermal gold deposit Northern Saskatchewan [PDF]
, 1996 The Seabee deposit is a mesothermal, gold-bearinq vein system hosted within mylonitic shear structures in the Glennie Domain of the Proterozoic Trans-Hudson Orogen, northern Saskatchewan, Canada.
Schultz, Dale Joel
core
Thermochemical conditions for the formation of Archean lode gold mineralization at Atlantic City-South Pass, Wyoming [PDF]
, 1990 Sediment-hosted gold mineralization of Archean age is found in the Wyoming Province and is geologically and geochemically more similar to the Phanerozoic turbidite-hosted or mesothermal type of gold deposit than to the more typically Archean greenstone ...
McGowan, Krista I.
core +2 more sources