Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Pravin Karna"'
Autor:
Md. Rafiqul Islam, Pravin Karna, John A. Tomko, Eric R. Hoglund, Daniel M. Hirt, Md Shafkat Bin Hoque, Saman Zare, Kiumars Aryana, Thomas W. Pfeifer, Christopher Jezewski, Ashutosh Giri, Colin D. Landon, Sean W. King, Patrick E. Hopkins
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-9 (2024)
Abstract As metallic nanostructures shrink towards the size of the electronic mean free path, thermal conductivity decreases due to increased electronic scattering rates. Matthiessen’s rule is commonly applied to assess changes in electron scatteri
Externí odkaz:
https://doaj.org/article/bd78f8ef7ed249f89adcfcca5701f951
Publikováno v:
Nano Letters. 23:491-496
We experimentally show that the ballistic length of hot electrons in laser-heated gold films can exceed ∼150 nm, which is ∼50% greater than the previously reported value of 100 nm inferred from pump-probe experiments. We also find that the mean f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b31f05dc21ddc06e00865920df2ae53
https://doi.org/10.1021/acs.nanolett.2c03781
https://doi.org/10.1021/acs.nanolett.2c03781
Autor:
Pravin Karna, Ashutosh Giri
Publikováno v:
Physical Review B. 107
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7bb41fecac4e82106f28c2ad7bab1fd
https://doi.org/10.1103/physrevb.107.094301
https://doi.org/10.1103/physrevb.107.094301
Publikováno v:
Materials Horizons. 9:3087-3094
Proper thermal management of solar cells based on metal halide perovskites (MHPs) is key to increasing their efficiency as well as their durability. Although two-dimensional (2D) MHPs possess enhanced thermal stability as compared to their three-dime
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02d528dac5888c80bff3457878cddc35
https://doi.org/10.1039/d2mh01070d
https://doi.org/10.1039/d2mh01070d
Publikováno v:
Lecture Notes in Mechanical Engineering ISBN: 9789811976117
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d69094a8986268ca9ea079918e60322
https://doi.org/10.1007/978-981-19-7612-4_17
https://doi.org/10.1007/978-981-19-7612-4_17
Autor:
I. A. Palani, Sergey Belyaev, Kaushal Gangwar, S. Jayachandran, Ankit Kaithwas, Pravin Karna, Natalia Resnina
Publikováno v:
Transactions of the Indian Institute of Metals. 74:2471-2480
In this work, Shape-memory alloy (SMA)-based micromirrors were fabricated and the actuation was controlled through thermal stimulus. The micromirrors play a significant role in scanning and light deflection in the MEMS field. The SMA micromirrors wer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71bdfd4f7f192b798d14be5a31d4e806
https://doi.org/10.1007/s12666-021-02403-6
https://doi.org/10.1007/s12666-021-02403-6
Publikováno v:
The journal of physical chemistry letters. 13(47)
Extreme pressure conditions reveal fundamental insights into the physical properties of elemental metals that are otherwise not evident under ambient conditions. Herein, we use the density functional perturbation theory to demonstrate that the change
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8042c87ecf17f30337e674b4834b9d2b
https://pubmed.ncbi.nlm.nih.gov/36394985
https://pubmed.ncbi.nlm.nih.gov/36394985
Autor:
Sandip Thakur, Connor Jaymes Dionne, Pravin Karna, Sean W. King, William Lanford, Han Li, Shouvik Banerjee, Devin Merrill, Patrick E. Hopkins, Ashutosh Giri
Publikováno v:
Physical Review Materials. 6
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::196d90f6c5c96ceb85a9732d74c5c073
https://doi.org/10.1103/physrevmaterials.6.094601
https://doi.org/10.1103/physrevmaterials.6.094601
Autor:
S.S. Mani Prabu, Pravin Karna, Sergey Belyaev, R. Mithun, S. Jayachandran, S.C. Karthikeyan, I. A. Palani, Natalia Resnina
Publikováno v:
Sensors and Actuators A: Physical. 321:112411
A laser source was used as non-contact mode of heating to actuate NiTi/kapton polyimide shape memory alloy (SMA) bimorph. The bimorph was fabricated by depositing NiTi thin film over Kapton polyimide sheet of dimension 5 × 2 cm2 using thermal evapor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcbbd39723410262594da7f80ca4c792
https://doi.org/10.1016/j.sna.2020.112411
https://doi.org/10.1016/j.sna.2020.112411