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Full-Text Articles in Physical Sciences and Mathematics
Predictive Formula For Electron Range Over A Large Span Of Energies, Anne C. Starley, Gregory Wilson, Lisa Montierth Phillipps, Jr Dennison
Predictive Formula For Electron Range Over A Large Span Of Energies, Anne C. Starley, Gregory Wilson, Lisa Montierth Phillipps, Jr Dennison
Posters
An empirical model developed by the Materials Research Group that predicts the approximate electron penetration depth—or range—of some common materials has been extended to predict the range for a broad assortment of other materials. The electron range of a material is the maximum distance electrons can travel through a material, before losing all of their incident kinetic energy. The original model used the Continuous-Slow-Down-Approximation for energy deposition in a material to develop a composite analytical formula which estimated the range from 10 MeV with an uncertainty of v, which describes the effective number of valence electrons. NV was empirically …
Predictive Formula For Electron Range Over A Large Span Of Energy, Anne Starley
Predictive Formula For Electron Range Over A Large Span Of Energy, Anne Starley
Physics Capstone Projects
A model developed by the Materials Research Group that calculates electron penetration range of some common materials, has been greatly expanded with the hope that such extensions will predict the range in other, perhaps, more interesting materials. Developments in this extended model aid in predicting the approximate penetration depth into diverse classes of materials for a broad range of energetic incident electrons (<10 eV to >10 MeV, with better than 20% accuracy). The penetration depth—or range—of a material describes the maximum distance electrons can travel through a material, before losing all of its incident kinetic energy. This model has started to predict …
Cationic Silicon Nanocrystals With Colloidal Stability, Ph-Independent Positive Surface Charge And Size Tunable Photoluminescence In The Near-Infrared To Red Spectral Range, Kenneth K. Chen, Kristine Liao, Gilberto Casillas, Yiying Li, Geoffrey A. Ozin
Cationic Silicon Nanocrystals With Colloidal Stability, Ph-Independent Positive Surface Charge And Size Tunable Photoluminescence In The Near-Infrared To Red Spectral Range, Kenneth K. Chen, Kristine Liao, Gilberto Casillas, Yiying Li, Geoffrey A. Ozin
Australian Institute for Innovative Materials - Papers
In this report, the synthesis of a novel class of cationic quaternary ammonium-surface-functionalized silicon nanocrystals (ncSi) using a novel and highly versatile terminal alkyl halide-surface-functionalized ncSi synthon is described. The distinctive features of these cationic ncSi include colloidal stability, pH-independent positive surface charge, and size-tunable photoluminescence (PL) in the biologically relevant near-infrared-to-red spectral region. These cationic ncSi are characterized via a combination of high-resolution scanning transmission electron microscopy with energy-dispersive X-ray analysis, Fourier transform infrared, X-ray photoelectron, and photoluminescence spectroscopies, and zeta potential measurements.