Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Kjeld Pedersen"'
Autor:
Manohar Chirumamilla, Tobias Krekeler, Deyong Wang, Peter K. Kristensen, Martin Ritter, Vladimir N. Popok, Kjeld Pedersen
Publikováno v:
Applied Nano, Vol 4, Iss 4, Pp 280-292 (2023)
Aluminum nitride (AlN) is a material of growing interest for power electronics, fabrication of sensors, micro-electromechanical systems, and piezoelectric generators. For the latter, the formation of nanowire arrays or nanostructured films is one of
Externí odkaz:
https://doaj.org/article/552eb898188f415880cf94eed5831845
Autor:
Anisha Chirumamilla, Maria H. Salazar, Deyong Wang, Peter K. Kristensen, Duncan S. Sutherland, Manohar Chirumamilla, Vladimir N. Popok, Kjeld Pedersen
Publikováno v:
Photonics, Vol 10, Iss 7, p 821 (2023)
A variety of nanostructures capable of generating strong local electromagnetic fields (hot spots) in interaction with radiation have been under intensive investigation towards plasmonic applications in surface-enhanced Raman scattering (SERS), biosen
Externí odkaz:
https://doaj.org/article/38736091b6db46b7aeb719bb025ce031
Publikováno v:
Batteries, Vol 8, Iss 7, p 72 (2022)
Lithium-ion batteries have good performance and environmentally friendly characteristics, so they have great potential. However, lithium-ion batteries will age to varying degrees during use, and the process is irreversible. There are many aging mecha
Externí odkaz:
https://doaj.org/article/16e1b00f7dce4409926d0cbd9ced674c
Autor:
Sajjad Mahmoudinezhad, Petru Adrian Cotfas, Daniel Tudor Cotfas, Enok Johannes Haahr Skjølstrup, Kjeld Pedersen, Lasse Rosendahl, Alireza Rezania
Publikováno v:
Energies, Vol 14, Iss 23, p 8129 (2021)
In the current study, the electrical responses of a thermoelectric (TE) module and a photovoltaic (PV) cell are investigated in three different systems, namely, a PV-only system, TE-only system, and hybrid TE-PV system with a beam splitter (TE-PV-BS)
Externí odkaz:
https://doaj.org/article/60b7daeb34a44485ade1f3d688d501a3
Publikováno v:
Energies, Vol 14, Iss 17, p 5220 (2021)
Understanding the aging mechanism for lithium-ion batteries (LiBs) is crucial for optimizing the battery operation in real-life applications. This article gives a systematic description of the LiBs aging in real-life electric vehicle (EV) application
Externí odkaz:
https://doaj.org/article/4ee7e8e5d1d64a17be32b691a6ea1b96
Autor:
Jonas Beermann, René L Eriksen, Thomas Søndergaard, Tobias Holmgaard, Kjeld Pedersen, Sergey I Bozhevolnyi
Publikováno v:
New Journal of Physics, Vol 15, Iss 7, p 073007 (2013)
We have recently reported broadband (450–850 nm) and efficient (96% on average) light absorption on gold surfaces with arrays of ultra-sharp convex grooves via excitation and subsequent adiabatic nanofocusing and absorption of gap surface plasmon m
Externí odkaz:
https://doaj.org/article/421cd836adf74310b417fe2630deb21b
Publikováno v:
Popok, V, Chirumamilla, M, Krekeler, T, Ritter, M & Pedersen, K 2023, ' Magnetron Sputter Grown AlN Nanostructures with Giant Piezoelectric Response toward Energy Generation ', ACS Applied Nano Materials, vol. 6, no. 10, pp. 8849-8856 . https://doi.org/10.1021/acsanm.3c01250
Piezoelectric III-N semiconductor nanostructures are of increasing interest to be used for sensor technologies and energy harvesting. Within this group of materials, AlN is known for the largest bulk piezoelectric constant, but piezoelectric properti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::746d0c9155d4265e788482ccf3325ffa
https://doi.org/10.1021/acsanm.3c01250
https://doi.org/10.1021/acsanm.3c01250
Publikováno v:
Aalborg University
Li, Y, Guo, J, Pedersen, K, Gurevich, L & Stroe, D-I 2023, ' Investigation of Multi-Step Fast Charging Protocol and Aging Mechanism for Commercial NMC/Graphite Lithium-ion Batteries ', Journal of Energy Chemistry, vol. 80, pp. 237-246 . https://doi.org/10.1016/j.jechem.2023.01.016
Li, Y, Guo, J, Pedersen, K, Gurevich, L & Stroe, D-I 2023, ' Investigation of Multi-Step Fast Charging Protocol and Aging Mechanism for Commercial NMC/Graphite Lithium-ion Batteries ', Journal of Energy Chemistry, vol. 80, pp. 237-246 . https://doi.org/10.1016/j.jechem.2023.01.016
Fast charging is considered a promising protocol for raising the charging efficiency of electric vehicles. However, high currents applied to Lithium-ion (Li-ion) batteries inevitably accelerate the degradation and shorten their lifetime. This work de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e46b1a3a2aa4e2980e7e2ea815279372
https://doi.org/10.1016/j.jechem.2023.01.016
https://doi.org/10.1016/j.jechem.2023.01.016
Autor:
Jia Guo, Siyu Jin, Xin Sui, Xinrong Huang, Yaolin Xu, Yaqi Li, Peter Kjær Kristensen, Deyong Wang, Kjeld Pedersen, Leonid Gurevich, Daniel-Ioan Stroe
Publikováno v:
Guo, J, Jin, S, Sui, X, Huang, X, Li, Y, Kristensen, P K, Wang, D, Pedersen, K, Gurevich, L & Stroe, D-I 2023, ' Unravelling and quantifying the aging processes of commercial Li(Ni 0.5 Co 0.2 Mn 0.3 )O 2 /graphite lithium-ion batteries under constant current cycling ', Journal of Materials Chemistry A, vol. 11, no. 1, pp. 41-52 . https://doi.org/10.1039/D2TA05960F
Constant current charging and discharging is widely used nowadays for commercial lithium (Li) ion batteries (LIBs) in applications of portable electronic devices and electric vehicles. However, the main battery degradation mechanism during constant c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edea6a8bf4ec9b6c2c0598086303cc59
https://doi.org/10.1039/d2ta05960f
https://doi.org/10.1039/d2ta05960f
Autor:
Anisha Chirumamilla, Ioana-Malina Moise, Ziru Cai, Fei Ding, Karina B. Jensen, Deyong Wang, Peter K. Kristensen, Lars R. Jensen, Peter Fojan, Vladimir Popok, Manohar Chirumamilla, Kjeld Pedersen
Publikováno v:
Chirumamilla, A, Moise, I M, Cai, Z, Ding, F, Jensen, K B, Wang, D, Kristensen, P K, Jensen, L R, Fojan, P, Popok, V, Chirumamilla, M & Pedersen, K 2023, ' Lithography-free fabrication of scalable 3D nanopillars as ultrasensitive SERS substrates ', Applied Materials Today, vol. 31, 101763 . https://doi.org/10.1016/j.apmt.2023.101763
Surface-enhanced Raman spectroscopy (SERS) detection of analyte molecules at ultra-low concentrations requires highly-efficient plasmonic nanostructures enabling a high hot-spot density. However, a facile and cost-effective strategy toward large-area
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5da6d6afc7f20aa9ffa6ea2c5a7ee59
https://vbn.aau.dk/da/publications/88c90949-b1e3-415b-bc95-ba4aefeedfcb
https://vbn.aau.dk/da/publications/88c90949-b1e3-415b-bc95-ba4aefeedfcb
