Conductive atomic force microscopy (C-AFM) was employed to perform conductivity measurements on a facet-specific CuO cube, octahedron, and rhombic dodecahedron and intrinsic Si {100}, {111}, and {110} wafers. Similar curves to those recorded previously using a nanomanipulator were obtained with the exception of high conductivity for the Si {110} wafer. Next, curves of different CuO-Si heterostructures were evaluated.
View Article and Find Full Text PDFEur J Ophthalmol
September 2022
Purpose: To report a case of Paracentral acute middle maculopathy (PAMM) caused by severe internal carotid artery (ICA) stenosis and discuss the correlation between PAMM and ICA stenosis.
Case Description: A 67-year-old male patient presented with left acute blurred vision for 1 week. The best-corrected visual acuity of the left eye was 0.
ZnS particles were grown over CuO cubes, octahedra, and rhombic dodecahedra for examination of their facet-dependent photocatalytic behaviors. After ZnS growth, CuO cubes stay photocatalytically inactive. ZnS-decorated CuO octahedra show enhanced photocatalytic activity, resulting from better charge carrier separation upon photoexcitation.
View Article and Find Full Text PDFA simple aqueous-phase synthesis of PbSe nanocubes with tunable sizes has been developed by first preparing a Na SeSO stock solution through dissolution of selenium powder in a solution of Na SO at 90-100 °C for 30 min, and adding part of this solution to a mixture of lead acetate and acetic acid at room temperature with stirring for only 5-8 min to complete the nanocrystal growth. Adjusting the volume of acetic acid and Na SeSO solution added enabled the size of the nanocrystals to be tuned, with average edge lengths of 13 to 121 nm attained. Changes in solution color revealed very different crystal growth rates for the 13 and 121 nm nanocubes.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
December 2018
Electrical conductivity properties of Ge {100}, {110}, {111}, and {211} facets have been measured by breaking Ge (100) and (111) wafers to expose {110} and {211} surfaces and contacting the different facets with tungsten probes. Ge {111} and {211} faces are far more conductive than the already conductive Ge {100} and {110} faces, matching with recent density functional theory (DFT) predictions. Asymmetric I-V curves resembling those of p-n junctions have been collected for the {110}/{111} and {110}/{211} facet combinations.
View Article and Find Full Text PDFWe report the transport and trapping behavior of 100 and 500 nm diameter nanospheres in a plasmon-enhanced two-dimensional optical lattice. An optical potential is created by a two-dimensional square lattice of gold nanostructures, illuminated by a Gaussian beam to excite plasmon resonance. The nanoparticles can be guided, trapped, and arranged using this optical potential.
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