Zobrazeno 1 - 10
of 415
pro vyhledávání: '"C W White"'
Autor:
Rosalia O’Brien, Rolf A. Jansen, Norman A. Grogin, Seth H. Cohen, Brent M. Smith, Ross M. Silver, W. P. Maksym III, Rogier A. Windhorst, Timothy Carleton, Anton M. Koekemoer, Nimish P. Hathi, Christopher N. A. Willmer, Brenda L. Frye, M. Alpaslan, M. L. N. Ashby, T. A. Ashcraft, S. Bonoli, W. Brisken, N. Cappelluti, F. Civano, C. J. Conselice, V. S. Dhillon, S. P. Driver, K. J. Duncan, R. Dupke, M. Elvis, G. G. Fazio, S. L. Finkelstein, H. B. Gim, A. Griffiths, H. B. Hammel, M. Hyun, M. Im, V. R. Jones, D. Kim, B. Ladjelate, R. L. Larson, S. Malhotra, M. A. Marshall, S. N. Milam, J. D. R. Pierel, J. E. Rhoads, S. A. Rodney, H. J. A. Röttgering, M. J. Rutkowski, R. E. Ryan Jr., M. J. Ward, C. W. White, R. J. van Weeren, X. Zhao, J. Summers, J. C. J. D’Silva, R. Ortiz III, A. S. G. Robotham, D. Coe, M. Nonino, N. Pirzkal, H. Yan, T. Acharya
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 272, Iss 1, p 19 (2024)
The James Webb Space Telescope (JWST) North Ecliptic Pole (NEP) Time-domain Field (TDF) is a >14′ diameter field optimized for multiwavelength time-domain science with JWST. It has been observed across the electromagnetic spectrum both from the gro
Externí odkaz:
https://doaj.org/article/46f5fdcf37b540c59912ef37fd485785
Publikováno v:
Surface and Coatings Technology. 201:8542-8546
We have fabricated Se nanoparticles in silica substrates by ion implantation followed by thermal annealing up to 1000 °C, and studied the Se nanoparticle formation by optical absorption spectroscopy, Rutherford backscattering spectrometry, X-ray dif
Autor:
Daryush Ila, M. H. Wu, Akira Ueda, D. Denmark, C. L. Shao, C. W. White, R. Mu, Y. C. Liu, B. Vlahovic, Claudiu Muntele
Publikováno v:
Surface and Coatings Technology. 196:123-129
Fused silica substrates were implanted with: (1) phosphorus only, (2) indium only, and (3) phosphorus plus indium ions. Vibrational and electronic characterizations have been performed on the P only and In only samples to obtain an understanding of t
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 26:24-27
We have studied photoluminescence (PL) spectrum and dynamics of Cu- and Al-doped ZnS (ZnS:Cu,Al) nanocrystals fabricated by sequential implantation of Zn +, S + , Cu + , and Al + ions into Al 2 O 3 matrices. These samples exhibit intense green PL und
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 222:469-476
Ion implantation was used to synthesize two specimens of SiO 2 containing silicon nanocrystals with different average sizes. Although the luminescence spectra of the two specimens were slightly different, selective excitation experiments tuned to spe
Autor:
John D. Budai, S. P. Withrow, C. W. White, K. D. Sorge, James R. Thompson, J. M. Williams, Lynn A. Boatner, Al Meldrum
Publikováno v:
Journal of Applied Physics. 95:8160-8166
The properties of FePt nanoparticles formed by the implantation of Fe+Pt into c-axis-oriented Al2O3 single crystals followed by thermal annealing are shown to be strongly dependent on the annealing environment. Annealing in a reducing environment (fl
Publikováno v:
Advanced Materials. 16:31-34
Publikováno v:
Applied Physics A: Materials Science & Processing. 77:57-61
The recent observation of optical gain from silicon nanocrystals embedded in SiO2 opens an opportunity to develop a nanoscale silicon-based laser. However, the challenge remains to design and develop a laser architecture using CMOS-compatible materia
Autor:
C. W. White, K. D. Sorge, James R. Thompson, S. P. Withrow, John D. Budai, Lynn A. Boatner, Al Meldrum
Publikováno v:
Journal of Applied Physics. 93:5656-5669
Oriented Fe1−xPtx nanoparticles have been formed in single-crystal Al2O3 host matrices by the sequential implantation of Fe and Pt ions followed by thermal annealing. For x in the range of ∼35–55 at. % Pt, these nanoparticles are in the chemica
Autor:
Lynn A. Boatner, K. D. Sorge, C. W. White, James R Thompson, S. P. Withrow, Ramki Kalyanaraman, John D. Budai
Publikováno v:
Journal of Magnetism and Magnetic Materials. 260:319-329
Ion implantation followed by thermal processing has been used to synthesize nanoparticles of cobalt–platinum (Co–Pt) alloys in single-crystal Al2O3. Several phases, including CoPt in the L10 structure, Co3Pt, and CoPt3 that has the L12 structure,