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pro vyhledávání: '"Helmerson Kristian"'
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Autor:
Kotsakidis, Jimmy C., Zhang, Quianhui, de Parga, Amadeo L. Vazquez, Currie, Marc, Helmerson, Kristian, Gaskill, D. Kurt, Fuhrer, Michael S.
We have studied the ambient air oxidation of chemical vapor deposition (CVD) grown monolayers of the semiconducting transition metal dichalcogenide (S-TMD) WS$_{2}$ using optical microscopy, laser scanning confocal microscopy (LSCM), photoluminescenc
Externí odkaz:
http://arxiv.org/abs/1906.00375
Autor:
Bannur Nanjunda Shivananju, Seshadri Venkatesh N., Krishnan Chitra, Rath Sweta, Arunagiri Sivasubramanian, Bao Qiaoliang, Helmerson Kristian, Zhang Han, Jain Ravi, Sundarrajan Asokan, Srinivasan Balaji
Publikováno v:
Nanophotonics, Vol 11, Iss 22, Pp 5041-5059 (2022)
Highly infectious viral diseases are a serious threat to mankind as they can spread rapidly among the community, possibly even leading to the loss of many lives. Early diagnosis of a viral disease not only increases the chance of quick recovery, but
Externí odkaz:
https://doaj.org/article/3378267947914b43a8e6c23a4658d037
Autor:
Johnstone, Shaun P., Groszek, Andrew J., Starkey, Philip T., Billington, Christopher J., Simula, Tapio P., Helmerson, Kristian
Interacting systems driven far from equilibrium tend to evolve to steady states exhibiting large-scale structure and order. In two-dimensional turbulent flow the seemingly random swirling motion of a fluid can evolve towards persistent large-scale vo
Externí odkaz:
http://arxiv.org/abs/1801.06952
Publikováno v:
Phys. Rev. A 97, 023617 (2018)
We derive a general and exact equation of motion for a quantised vortex in an inhomogeneous two-dimensional Bose-Einstein condensate. This equation expresses the velocity of a vortex as a sum of local ambient density and phase gradients in the vicini
Externí odkaz:
http://arxiv.org/abs/1708.09202
Autor:
Groszek, Andrew J., Davis, Matthew J., Paganin, David M., Helmerson, Kristian, Simula, Tapio P.
Publikováno v:
Phys. Rev. Lett. 120, 034504 (2018)
We introduce a new method of statistical analysis to characterise the dynamics of turbulent fluids in two dimensions. We establish that, in equilibrium, the vortex distributions can be uniquely connected to the temperature of the vortex gas, and appl
Externí odkaz:
http://arxiv.org/abs/1702.05229
Publikováno v:
Sci. Reports, 6, 24463-68 (2016)
Feynman described the double slit experiment as "a phenomenon which is impossible, absolutely impossible, to explain in any classical way and which has in it the heart of quantum mechanics". The double slit experiment, performed one photon at a time,
Externí odkaz:
http://arxiv.org/abs/1701.01517
Autor:
He, Cuiwei, Neild, Adrian, Helmerson, Kristian, Cincotta, Stefanie, Zuk, Jessica, Armstrong, Jean
Publikováno v:
In Optics Communications 1 July 2021 490
Publikováno v:
Phys. Rev. A 93, 043614 (2016)
We study computationally dynamics of quantised vortices in two-dimensional superfluid Bose-Einstein condensates confined in highly oblate power-law traps. We have found that the formation of large scale Onsager vortex clusters prevalent in steep-wall
Externí odkaz:
http://arxiv.org/abs/1511.06552
Publikováno v:
Phys. Rev. Lett. 113, 165302 (2014)
We study the relaxation dynamics of an isolated zero temperature quasi-two-dimensional superfluid Bose-Einstein condensate (BEC) that is imprinted with a spatially random distribution of quantum vortices. Following a period of vortex annihilation, we
Externí odkaz:
http://arxiv.org/abs/1405.3399