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9 papers
Dielectric cross-shaped resonator based metasurface for vortex beam generation in Mid-IR and THz wavelengths
Raghu Dharmavarapu, Ken-ichi Izumi, Ikufumi Katayama +7
Metasurfaces are engineered thin surfaces comprising two dimensional (2D) arrays of sub-wavelength spaced and sub-wavelength sized resonators. Metasurfaces can locally manipulate t…
Nanoscale chemical mapping of laser-solubilized silk
Meguya Ryu, Hanae Kobayashi, Armandas Balcytis +8
A water soluble amorphous form of silk was made by ultra-short laser pulse irradiation and detected by nanoscale IR mapping. An optical absorption-induced nanoscale surface expansi…
Crystal structure and magnetic modulation in beta-Ce2O2FeSe2
Chun-Hai Wang, C. M. Ainsworth, S. D. Champion +6
We report a combination of X-ray and neutron diffraction studies, Mossbauer spectroscopy and muon spin relaxation (muSR) measurements to probe the structure and magnetic properties…
Molecule-Induced Conformational Change in Boron Nitride Nanosheets with Enhanced Surface Adsorption
Qiran Cai, Aijun Du, Guoping Gao +11
Surface interaction is extremely important to both fundamental research and practical application. Physisorption can induce shape and structural distortion (i.e. conformational cha…
Molecular nitrogen acceptors in ZnO nanowires induced by nitrogen plasma annealing
C. Ton-That, L. Zhu, M. N. Lockrey +8
X-ray absorption near-edge spectroscopy (XANES), photoluminescence, cathodoluminescence and Raman spectroscopy have been used to investigate the chemical states of nitrogen dopants…
Extremely high negative electron affinity of diamond via magnesium adsorption
Kane M. O'Donnell, Mark T. Edmonds, Anton Tadich +5
We report large negative electron affinity (NEA) on diamond (100) using magnesium adsorption on a previously oxygen-terminated surface. The measured NEA is up to e…