Výsledky vyhledávání - "Paul R. Chalker"

Akademický článek

Atomic scale observation of threading dislocations in α-Ga2O3

Autor: Ross Mullen, Joseph W. Roberts, Paul R. Chalker, Rachel A. Oliver, Ben Hourahine, Fabien C. P. Massabuau

Publikováno v: AIP Advances, Vol 14, Iss 11, Pp 115018-115018-6 (2024)

This study presents a statistically significant investigation of threading dislocations in α-Ga2O3 using high-resolution transmission electron microscopy. All the dislocations, observed end on, exhibit a projected Burgers vector be=13⟨11̄00⟩, w

Externí odkaz: https://doaj.org/article/82f59929beec4bc38ebbd61f5953f2e7

Zobrazit plný text záznamu

(Digital Presentation) Optimization of MIM Rectifiers for Terahertz Rectennas

Autor: Serdar B. Tekin, Saeed Almalki, Andrea Vezzoli, Liam O’Brien, Steve Hall, Paul R. Chalker, Ivona Z. Mitrovic

Publikováno v: ECS Transactions. 108:69-79

There is a significant demand for harvesting renewable infrared (IR) energy from unused heat sources. The rectifying antenna (rectenna) device has the ability to capture alternating current (AC) IR radiation and rectify it into usable direct current

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7435e8dc8ec4a4fd2225bc8bac2a49f
https://doi.org/10.1149/10802.0069ecst

Zobrazit plný text záznamu

Ni/Au contacts to corundum α-Ga2O3

Autor: Fabien C.-P. Massabuau, Francesca Adams, David Nicol, John C. Jarman, Martin Frentrup, Joseph W. Roberts, Thomas J. O’Hanlon, Andras Kovács, Paul R. Chalker, R. A. Oliver

The structural, chemical and electrical properties of Ni/Au contacts to the atomic layer deposited α-Ga2O3 were investigated. Ni forms a Schottky contact with α-Ga2O3, irrespectively of the post-annealing temperature. No sign of metal oxidation was

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90a856508c2358c30ae556580d49c380
https://www.repository.cam.ac.uk/handle/1810/347363

Zobrazit plný text záznamu

(Invited) Band Line-up of High-k Oxides on GaN

Autor: Partha Pratim Das, Paul R. Chalker, Vinod R. Dhanak, Richard J. Potter, Teresa Partida Manzanera, Sung-Jin Cho, Rajat Mahapatra, Iain G. Thayne, James T. Gibbon, Leanne A. H. Jones, Ivona Z. Mitrovic, J.W. Roberts

Publikováno v: ECS Transactions

GaN high electron mobility transistors (HEMTs) have been commercially available for over 10 years, however gate leakage limits their performance. The HEMT has the advantages of offering simple associated circuit design and fail-safe operation. Curren

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0eaa76356046dc6185dd1a5bda881b1
https://doi.org/10.1149/09701.0067ecst

Zobrazit plný text záznamu

A study on ultrafast laser micromachining and optical properties of amorphous polyether(ether)ketone (PEEK) films

Autor: Geoff Dearden, Paul R. Chalker, Yue Tang, Walter Perrie, Olivier Allegre, Qianliang Li, Zhaoqing Li, Stuart Edwardson, Janet Ho

Publikováno v: Li, Q, Perrie, W, Tang, Y, Allegre, O, Ho, J, Chalker, P R, Li, Z, Edwardson, S P & Dearden, G 2020, ' A study on ultrafast laser micromachining and optical properties of amorphous polyether(ether)ketone (PEEK) films ', Procedia CIRP . https://doi.org/10.1016/j.procir.2020.09.113

Polyether(ether)ketone (PEEK) has been widely used in the electronics and biomedical industries due to excellent electrical, chemical and thermal stability. The ablation and optical properties of amorphous PEEK have been investigated using ultrahigh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10739b25bbe7dfec47780c2dcea6d2c2
https://doi.org/10.1016/j.procir.2020.09.113

Zobrazit plný text záznamu

Oxides for Rectenna Technology

Autor: Stephen Hall, Naser Sedghi, S.B. Tekin, Paul R. Chalker, Saeed Almalki, Ivona Z. Mitrovic

Publikováno v: Materials
Materials, Vol 14, Iss 5218, p 5218 (2021)

The quest to harvest untapped renewable infrared energy sources has led to significant research effort in design, fabrication and optimization of a self-biased rectenna that can operate without external bias voltage. At the heart of its design is the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::001530199da3eb3909c7c7ba3421f8e1
https://pubmed.ncbi.nlm.nih.gov/34576441

Zobrazit plný text záznamu

Study of Ti contacts to corundum α -Ga 2 O 3

Autor: Rachel A. Oliver, Fabien Massabuau, D Nicol, Paul R. Chalker, András Kovács, John Jarman, F Adams, J.W. Roberts

Publikováno v: Journal of physics / D 54(38), 384001-(2021). doi:10.1088/1361-6463/ac0d28
Journal of Physics D: Applied Physics

We present a study of the electrical, structural and chemical properties of Ti contacts on atomic layer deposited α-Ga2O3 film. Ti forms an ohmic contact with α-Ga2O3. The contact performance is highly dependent on the post-evaporation annealing te

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0877029fa52e49c6233ea27688965996
https://www.repository.cam.ac.uk/handle/1810/325486

Zobrazit plný text záznamu

Alloyed Cu/Si core-shell nanoflowers on the three-dimensional graphene foam as an anode for lithium-ion batteries

Autor: Ruowei Yi, Yinqing Li, Paul R. Chalker, Li Yang, Stephen Taylor, Yi Sun, Cezhou Zhao, Chenguang Liu, Ivona Z. Mitrovic, Zhao Yinchao

Publikováno v: ELECTROCHIMICA ACTA

In this study, we demonstrate a facile method to fabricate a flexible alloyed copper/silicon core-shell nanoflowers structure anchored on the three-dimensional graphene foam as a current collector. This combination provides flexible and free-standing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdd535c07d0bc361a92daa703f5f68e0
https://doi.org/10.1016/j.electacta.2019.03.071

Zobrazit plný text záznamu

Atomic Layer Vs. Sol-Gel Deposited Coatings for Long Cycle-Life Li-Ion Battery Positive Electrodes

Autor: Rory Powell, Jungwoo Lim, Alex R. Neale, Paul R. Chalker, Laurence J. Hardwick

Publikováno v: ECS Meeting Abstracts. :515-515

High nickel content layered oxide positive electrodes for Li-ion batteries suffer from capacity fade due to, among other factors, particle cracking induced by lithiation/delithiation, transition metal dissolution into the electrolyte, and attack from

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6cda50af6a4b09b37d9f4a3db6aa06fd
https://doi.org/10.1149/ma2022-014515mtgabs

Zobrazit plný text záznamu

Enhanced electrochemical performance by GeOx-Coated MXene nanosheet anode in lithium-ion batteries

Autor: Stephen Taylor, Rui Liu, Ruowei Yi, Zhao Yinchao, Paul R. Chalker, Li Yang, Cezhou Zhao, Chenguang Liu, Hao Wu, Yinqing Li, Ivona Z. Mitrovic, Wenbin Yang

Publikováno v: Electrochimica Acta

Here, we demonstrate a facile method to synthesize an amorphous GeOx-coated MXene nanosheet structure as the anode in lithium-ion batteries. By using the GeO32− as the precursor, NaBH4 as the reduction agent, we performed a one-pot in situ synthesi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2645668a3a69b2bedd2044c703cfea2c

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání