Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Simonas Indrisiunas"'
Publikováno v:
Materials, Vol 16, Iss 13, p 4732 (2023)
The development of new efficient, economical, and safe methods for strengthening the working surfaces of parts is an important task in the field of improving the reliability and resourcefulness of critical equipment and structures. In the present pap
Externí odkaz:
https://doaj.org/article/7db4f0ba0fec4c269a2c81a24d66c29d
Publikováno v:
Materials, Vol 15, Iss 16, p 5534 (2022)
In this research, the wetting property control of a stainless-steel surface, structured using parallel processing via an array of 64-femtosecond laser beams, is presented. The scanning of an 8 × 8-beam array over the sample was used to uniformly cov
Externí odkaz:
https://doaj.org/article/c020104908e24c0f8e433406105baf48
Publikováno v:
Micromachines, Vol 12, Iss 4, p 407 (2021)
Sapphire and silicon carbide substrates are used for growth of the III-N group heterostructures to obtain the electronic devices for high power and high frequency applications. Laser micromachining of deep channels in the frontside of the transparent
Externí odkaz:
https://doaj.org/article/e52d971ab5574c47a744f617f33e7374
Autor:
Justinas Jorudas, Artūr Šimukovič, Maksym Dub, Maciej Sakowicz, Paweł Prystawko, Simonas Indrišiūnas, Vitalij Kovalevskij, Sergey Rumyantsev, Wojciech Knap, Irmantas Kašalynas
Publikováno v:
Micromachines, Vol 11, Iss 12, p 1131 (2020)
We report on the high-voltage, noise, and radio frequency (RF) performances of aluminium gallium nitride/gallium nitride (AlGaN/GaN) on silicon carbide (SiC) devices without any GaN buffer. Such a GaN–SiC hybrid material was developed in order to i
Externí odkaz:
https://doaj.org/article/6ec2e3a2a5904a008f738fa7924af970
Autor:
Bogdan VOISIAT, Simonas INDRIŠIŪNAS, Gediminas RAČIUKAITIS, Irena ŠIMKIENĖ, Alfonsas RĖZA, Rasa SUZANOVIČIENĖ
Publikováno v:
Medžiagotyra, Vol 20, Iss 2, Pp 157-159 (2014)
Recently, a lot of attempts have been directed to increase the solar energy coupling within an active media of a solar cell. Silicon and other materials, which are used as the active media in solar cell, reflect a considerable part of solar light due
Externí odkaz:
https://doaj.org/article/dba4bebfc9444267ba86a22bfaa78e06
Publikováno v:
2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
Autor:
Irmantas Kašalynas, Evaldas Svirplys, Simonas Indrisiunas, Heinz-Wilhelm Hübers, Andrzej Urbanowicz, Heiko Richter, Till Hagelschuer, Gediminas Račiukaitis
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 9:581-586
The optical performance of high-resistivity silicon with a laser-ablated surface was studied in the transmission mode in the frequency range of 0.1–4.7 THz. A reciprocal relationship between the transmission brightness and the surface roughness was
Autor:
Justinas Jorudas, Natalia V. Alexeeva, Daniil Pashnev, Andrzej Urbanowicz, Simonas Indrisiunas, Ignas Grigelionis, Tommi Kaplas, Irmantas Kašalynas, Vytautas Janonis, V. V. Korotyeyev
Publikováno v:
2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
Two-dimensional (2D) plasmons in grating-gated AlGaN/GaN heterostructures were investigated by terahertz time domain spectroscopy observing the distinctive minima and inflection points in the transmission amplitude and phase spectra, respectively. Th
Autor:
Gediminas Račiukaitis, Simonas Indrisiunas, Irmantas Kašalynas, Gintaras Valušis, Andrzej Urbanowicz, Linas Minkevičius, Milda Tamosiunaite, Vincas Tamosiunas
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 8:541-548
Numerical simulations and experimental characterization of laser-ablated focusing antireflective and phase-shifting structures for terahertz frequencies are presented. More than 10% shift of reflectance minimum to lower frequencies was predicted by s
Autor:
Evaldas Svirplys, Heiko Richter, Till Hagelschuer, Gediminas Račiukaitis, Linas Minkevičius, Heinz-Wilhelm Hübers, Simonas Indrisiunas, Irmantas Kašalynas, Andrzej Urbanowicz
Publikováno v:
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
the dependence of THz transmittance on the surface roughness of differently laser-patterned silicon was investigated in the frequency range of 0.1-4.7 THz. The scattering of THz waves on rough silicon surface was found as the main mechanism that dete