“Owein is a motivated individual who has worked across from my cubical for several years at AER. During this time I have noticed that Owein uses his expertise to complete various projects with efficiency. He is great to work with and will adapt to any situation.”
About
Hands on manager and artisan craftsman of code, experienced leading multiple teams of…
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God bless the good folks over at #NORAD for their #Santa tracker. God help my phone battery...
God bless the good folks over at #NORAD for their #Santa tracker. God help my phone battery...
Posted by Owein Reese
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Small tip for those celebrating Christmas who have more than 1 kid, use a different wrapping paper for each child. That way you know who's is who's…
Small tip for those celebrating Christmas who have more than 1 kid, use a different wrapping paper for each child. That way you know who's is who's…
Posted by Owein Reese
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I hate when people talk about the 10x engineer. Folks, it's a myth based upon a flawed study of 20 undergraduates, people with no actual real world…
I hate when people talk about the 10x engineer. Folks, it's a myth based upon a flawed study of 20 undergraduates, people with no actual real world…
Posted by Owein Reese
Experience
Education
Publications
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Raman Scattering from Surface Phonons in Rectangular Cross-Sectional w-ZnS Nanowires
Nano Letters
Wurtzite (w-) ZnS nanowires with nearly square cross sections have been grown by pulsed laser vaporization of a (ZnS)0.9Au0.1 target in a flow of Ar 5%H2. Growth proceeds by the vapor−liquid−solid mechanism. Raman scattering from the ZnS nanowires in air at room temperature reveals a strong first-order longitudinal optic (LO) phonon (346 cm-1) and two transverse optic (TO) phonons (269 and 282 cm-1), as well as several second-order features. Peak assignments based on bulk ZnS can be made for…
Wurtzite (w-) ZnS nanowires with nearly square cross sections have been grown by pulsed laser vaporization of a (ZnS)0.9Au0.1 target in a flow of Ar 5%H2. Growth proceeds by the vapor−liquid−solid mechanism. Raman scattering from the ZnS nanowires in air at room temperature reveals a strong first-order longitudinal optic (LO) phonon (346 cm-1) and two transverse optic (TO) phonons (269 and 282 cm-1), as well as several second-order features. Peak assignments based on bulk ZnS can be made for all the first- and second-order features, except for one band located between the LO and TO bands. This additional Raman band is observed at 335 cm-1 in air, and downshifts to 328 cm-1 in dichloromethane (εm = 2.0) and to 326 cm-1 in aniline (εm = 2.56). This band is therefore assigned to surface optic (SO) phonons. The position of the SO band is consistent with a dielectric continuum model for rectangular cross section wires. A symmetry breaking mechanism which may activate the SO mode is also discussed.
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Surface Optical Phonons in a Triaxial Ellipsoidal Quantum Dot
Physics Review B
The surface optical phonon eigenmodes in ellipsoidal quantum dots were calculated using the dielectric-continuum model. The problem is exactly solvable in terms of ellipsoidal coordinates and the eigenmodes are written in terms of Lamé polynomials. A study of the mode frequency dependence on the shape of the dots is carried out. This represents a generalization over earlier work on spheres and spheroids. Differences in the results obtained using an optically active and an optically passive host…
The surface optical phonon eigenmodes in ellipsoidal quantum dots were calculated using the dielectric-continuum model. The problem is exactly solvable in terms of ellipsoidal coordinates and the eigenmodes are written in terms of Lamé polynomials. A study of the mode frequency dependence on the shape of the dots is carried out. This represents a generalization over earlier work on spheres and spheroids. Differences in the results obtained using an optically active and an optically passive host is presented. The size independence of the mode frequencies for a quantum dot of arbitrary shape is proven.
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Time for the holidays and New Year's. I love this time. I'd love it more if we weren't pushing for a big release and total upgrade of the platform…
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