Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Jacob Ewing"'
Autor:
Panpan Li, Jacob Ewing, Matthew S. Wong, Yifan Yao, Hongjian Li, Srinivas Gandrothula, Jordan M. Smith, Mike Iza, Shuji Nakamura, Steven P. DenBaars
Publikováno v:
APL Materials, Vol 12, Iss 8, Pp 080901-080901-12 (2024)
Micro-light-emitting diodes (µLEDs) are gathering significant interest as a technology for emerging micro-displays. However, µLEDs encounter numerous obstacles, including size-dependent efficiency loss, poor efficiency of red µLEDs, and challenges
Externí odkaz:
https://doaj.org/article/f9823cb364814dc5add3a18af8892862
Autor:
Jacob Ewing, Cheyenne Lynsky, Jiaao Zhang, Pavel Shapturenka, Matthew Wong, Jordan Smith, Michael Iza, James S. Speck, Stephen P. DenBaars
Publikováno v:
Crystals, Vol 12, Iss 9, p 1216 (2022)
Achieving high quantum efficiency in long-wavelength LEDs has posed a significant challenge to the solid-state lighting and display industries. In this article, we use V-defect engineering as a technique to achieve higher efficiencies in red InGaN LE
Externí odkaz:
https://doaj.org/article/eb73ad91fa2343e8863bd765b2988c89
Publikováno v:
AIP Advances, Vol 8, Iss 5, Pp 056711-056711-5 (2018)
This paper investigates methods for electroplating thick (>20 μm), high-coercivity CoPt films using high current densities (up to 1 A/cm2) and elevated bath temperatures (70 °C). Correlations are made tying current-density and temperature process
Externí odkaz:
https://doaj.org/article/76132673726d4ce8b3c2fdca9c1a6cc5
Autor:
Feng Wu, Jacob Ewing, Cheyenne Lynsky, Michael Iza, Shuji Nakamura, Steven P. DenBaars, James S. Speck
Publikováno v:
Journal of Applied Physics. 133:035703
The V-defect is a naturally occurring inverted hexagonal pyramid structure that has been studied in GaN and InGaN growth since the 1990s. Strategic use of V-defects in pre-quantum well superlattices or equivalent preparation layers has enabled record
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c709941cfcd7777e84fe85e9ad5978ce
https://doi.org/10.1063/5.0135278
https://doi.org/10.1063/5.0135278
Autor:
Camilo Velez, Connor S. Smith, David P. Arnold, Seahee Hwangbo, Yong-Kyu Yoon, Renuka Bowrothu, Stasiu T. Chyczewski, Jacob Ewing
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 67:3230-3236
This paper explores a method for incorporating samarium cobalt (both Sm2Co17 and SmCo4) inclusions into screen-printed barium hexaferrite (BaFe12O19) films in order to tune the ferromagnetic resonance (FMR). Using an all-low-temperature screen-printi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aecb45b9d18536cd4bbbd1ad0855a164
https://doi.org/10.1109/tmtt.2019.2927216
https://doi.org/10.1109/tmtt.2019.2927216
Publikováno v:
Journal of Microelectromechanical Systems. 28:311-320
This paper reports the fabrication and magnetic characterization of very thick ( $50+ \mu \text{m}$ ) and high-performing (coercivity up to 850 kA/m; energy products up to $75 \text{kJ}/\text{m}^{3}$ ) electroplated permanent magnets microfabricated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a1c0f609ff4bcdf95f041804f987cd4
https://doi.org/10.1109/jmems.2018.2888846
https://doi.org/10.1109/jmems.2018.2888846
Autor:
Yong-Kyu Yoon, Todd Schumann, Jacob Ewing, David P. Arnold, Seahee Hwangbo, Kartik Sondhi, Camilo Velez
Publikováno v:
2018 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP).
This paper reports the fabrication and characterization of thick, self-biased hexaferrite magnetic structures patterned on planar substrates for integrated millimeter-wave (mm-wave) device applications. Using all lowtemperature processes, BaFe 12 O 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37c74efa6ff46a2f183c35e0e13b14b6
https://doi.org/10.1109/imws-amp.2018.8457152
https://doi.org/10.1109/imws-amp.2018.8457152
Publikováno v:
AIP Advances, Vol 8, Iss 5, Pp 056711-056711-5 (2018)
This paper investigates methods for electroplating thick (>20 μm), high-coercivity CoPt films using high current densities (up to 1 A/cm2) and elevated bath temperatures (70 °C). Correlations are made tying current-density and temperature process p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39fb27b61a3b6d1c321eb26b0e503e5a
https://doaj.org/article/76132673726d4ce8b3c2fdca9c1a6cc5
https://doaj.org/article/76132673726d4ce8b3c2fdca9c1a6cc5