Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Withers, Freddie"'
Autor:
Baber, Simon, Malein, Ralph N. E., Khatri, Prince, Keatley, Paul S., Guo, Shi, Withers, Freddie, Ramsay, Andrew J., Luxmoore, Isaac J.
We report optically detected magnetic resonance (ODMR) measurements of an ensemble of spin-1 negatively charged boron vacancies in hexagonal boron nitride. The photoluminescence decay rates are spin-dependent, with inter-system crossing rates of $1.0
Externí odkaz:
http://arxiv.org/abs/2111.11770
Autor:
Nutting, Darren, Felix, Jorlandio F., Dong-Wook, Shin, de Sanctis, Adolfo, Craciun, Monica F, Russo, Saverio, Chang, Hong, Cole, Nick, Woodgate, Adam, Leontis, Ioannis, Fernández, Henry A, Withers, Freddie
To fully exploit van der Waals materials and heterostructures, new mass-scalable production routes that are low cost but preserve the high electronic and optical quality of the single crystals are required. Here, we demonstrate an approach to realize
Externí odkaz:
http://arxiv.org/abs/1911.12843
Electrical control over the energy exchange between exciton states mediated by cavity-polaritons at room temperature is demonstrated. Spatially separated field effect transistors based on monolayers of WS$_2$ and MoS$_2$ are placed in a tuneable Fabr
Externí odkaz:
http://arxiv.org/abs/1905.12296
Publikováno v:
Advanced Optical Materials (2019)
We demonstrate control over light-matter coupling at room temperature combining a field effect transistor (FET) with a tuneable optical microcavity. Our microcavity FET comprises a monolayer tungsten disulfide WS$_2$ semiconductor which was transferr
Externí odkaz:
http://arxiv.org/abs/1905.11693
Autor:
De Sanctis, Adolfo, Mehew, Jake D., Alkhalifa, Saad, Withers, Freddie, Craciun, Monica F., Russo, Saverio
Publikováno v:
Nano Lett. 2018, 18, 12, 7919-7926
The observation of novel physical phenomena such as Hofstadter's butterfly, topological currents and unconventional superconductivity in graphene have been enabled by the replacement of SiO$_2$ with hexagonal Boron Nitride (hBN) as a substrate and by
Externí odkaz:
http://arxiv.org/abs/1810.03903
Autor:
Rooney, Aidan. P., Kozikov, Aleksey, Rudenko, Alexander N., Prestat, Eric, Hamer, Matthew J, Withers, Freddie, Cao, Yang, Novoselov, Kostya S., Katsnelson, Mikhail I., Gorbachev, Roman, Haigh, Sarah J.
Publikováno v:
Nano Lett 2017, 17 (9), pp 5222
Vertically stacked van der Waals heterostructures are a lucrative platform for exploring the rich electronic and optoelectronic phenomena in two-dimensional materials. Their performance will be strongly affected by impurities and defects at the inter
Externí odkaz:
http://arxiv.org/abs/1707.08140
Autor:
Withers, Freddie
In this thesis investigations into chemically modified graphene structures are presented. Chemical functionalization of graphene is the chemical attachment of molecules or atoms to the graphene surface via covalent or Van der Waals bonds, this proces
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.572431
Autor:
Nutting, Darren, Withers, Freddie
Publikováno v:
In Physica C: Superconductivity and its applications 15 February 2021 581
Autor:
Withers, Freddie, Bointon, Thomas Hardisty, Hudson, David Christopher, Craciun, Monica Felicia, Russo, Saverio
We present the first study of the intrinsic electrical properties of WS$_2$ transistors fabricated with two different dielectric environments WS$_2$ on SiO$_2$ and WS$_2$ on h-BN/SiO$_2$, respectively. A comparative analysis of the electrical charact
Externí odkaz:
http://arxiv.org/abs/1505.01613
Autor:
Khrapach, Ivan, Withers, Freddie, Bointon, Thomas H., Polyushkin, Dmitry K., Barnes, William L., Russo, Saverio, Craciun, Monica F.
Publikováno v:
Adv. Mater. 24, 2844-2849 (2012)
Future wearable electronics, displays and photovoltaic devices rely on highly conductive, transparent and yet mechanically flexible materials. Nowadays indium tin oxide (ITO) is the most wide spread transparent conductor in optoelectronic application
Externí odkaz:
http://arxiv.org/abs/1206.0001