Ann Roberts
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Explore the profile of Ann Roberts including associated specialties, affiliations and a list of published articles.
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48
Citations
558
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Recent Articles
1.
Ospina-Rozo L, Medina I, Hugall A, Rankin K, Roberts N, Roberts A, et al.
Sci Rep
. 2024 Nov;
14(1):29349.
PMID: 39592655
Beetles exhibit an extraordinary diversity of brilliant and colourful appearances and optical effects invisible to humans. Their underlying mechanisms have received some attention, but we know little about the ecological...
2.
Priscilla N, Wesemann L, Clark L, Sulejman S, Rickett J, Davis T, et al.
Opt Express
. 2024 Nov;
32(15):26964-26978.
PMID: 39538547
Metasurfaces have recently emerged as an ultra-compact solution to perform all-optical image processing, including phase contrast imaging. Most metasurfaces used in imaging processing applications operate over a restricted numerical aperture....
3.
Cotrufo M, Sulejman S, Wesemann L, Rahman M, Bhaskaran M, Roberts A, et al.
Nat Commun
. 2024 May;
15(1):4483.
PMID: 38802353
Optical metasurfaces have enabled analog computing and image processing within sub-wavelength footprints, and with reduced power consumption and faster speeds. While various image processing metasurfaces have been demonstrated, most of...
4.
Sulejman S, Priscilla N, Wesemann L, Lee W, Lou J, Hinde E, et al.
Sci Rep
. 2023 Mar;
13(1):4494.
PMID: 36934126
Many image processing operations involve the modification of the spatial frequency content of images. Here we demonstrate object-plane spatial frequency filtering utilizing the angular sensitivity of a commercial spectral bandstop...
5.
Shahin Shahidan M, Song J, James T, Roberts A
Nanoscale Adv
. 2022 Sep;
2(5):2177-2184.
PMID: 36132510
Pigment-free colouration based on plasmonic resonances has recently attracted considerable attention for potential in manufacturing and other applications. For plasmonic colour utilizing the metal-insulator-metal (MIM) configuration, the generated colour is...
6.
Wesemann L, Rickett J, Song J, Lou J, Hinde E, Davis T, et al.
Light Sci Appl
. 2021 May;
10(1):98.
PMID: 33966035
The ability to visualise transparent objects such as live cells is central to understanding biological processes. Here we experimentally demonstrate a novel nanostructured coverslip that converts phase information to high-contrast...
7.
Gomez D, Shi X, Oshikiri T, Roberts A, Misawa H
Nano Lett
. 2021 May;
21(9):3864-3870.
PMID: 33939440
We experimentally demonstrate and theoretically study the formation of coherent plasmon-exciton states which exhibit absorption of >90% of the incident light (at resonance) and cancellation of absorption. These coherent states...
8.
Bonin G, Barrow S, Connell T, Roberts A, Chesman A, Gomez D
J Phys Chem Lett
. 2020 Sep;
11(19):8378-8385.
PMID: 32936635
Structures capable of perfect light absorption promise technological advancements in varied applications, including sensing, optoelectronics, and photocatalysis. While it is possible to realize such structures by placing a monolayer of...
9.
Roberts A, Gomez D, Davis T
J Opt Soc Am A Opt Image Sci Vis
. 2018 Sep;
35(9):1575-1584.
PMID: 30183013
Here we consider image processing using the optical modes of metasurfaces with an angle-dependent excitation. These spatially dispersive modes can be used to directly manipulate the spatial frequency content of...
10.
Zhang H, Cadusch J, Kinnear C, James T, Roberts A, Mulvaney P
ACS Nano
. 2018 Jul;
12(8):7529-7537.
PMID: 30004661
A major goal of nanotechnology is the assembly of nanoscale building blocks into functional optical, electrical, or chemical devices. Many of these applications depend on an ability to optically or...