International Day of Light is a global initiative that provides an annual focus for the continued appreciation of light and its role in science, culture and art, education and sustainable development, and in fields as diverse as medicine, communication and energy.

In celebration of International Day of Light, ACS Photonics is proud to publish and highlight a collection of key articles published in the magazine last year that celebrate cutting-edge research in photonics.

Quantum photonics

Quantum emitter at room temperature in aluminum nitride
ACS Photonics 2020, 7, 7, 1636-1641
DOI: 10.1021 / acsphotonics.0c00528

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Efficient single photon detection with a time resolution of 7.7 ps for photon correlation measurements
ACS Photonics 2020, 7, 7, 1780-1787
DOI: 10.1021 / acsphotonics.0c00433

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On the way to bright and pure single photon emitters at 300 K based on GaN quantum dots on silicon
ACS Photonics 2020, 7, 6, 1515-1522
DOI: 10.1021 / acsphotonics.0c00310

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Cut off metallodielectric omnidirectional reflector: collecting single photons in the fundamental Gaussian mode with 95% efficiency
ACS Photonics 2020, 7, 9, 2474-2481
DOI: 10.1021 / acsphotonics.0c00730


Biophotonics

A Critical Review of UV Disinfection Systems Against COVID-19 Outbreak: Applicability, Validation, and Safety Considerations
ACS Photonics 2020, 7, 11, 2941-2951
DOI: 10.1021 / acsphotonics.0c01245

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Dielectric metasurfaces for advanced optical biosensors
ACS Photonics 2021, 8, 1, 47-60
DOI: 10.1021 / acsphotonics.0c01030

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Resolving the sequence of RNA strands by peak-amplified Raman spectroscopy
ACS Photonics 2021, 8, 2, 424-430
DOI: 10.1021 / acsphotonics.0c01486

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Development of lipid-coated semiconductor nanosensors for recording the membrane potential in neurons
ACS Photonics 2020, 7, 5, 1141-1152
DOI: 10.1021 / acsphotonics.9b01558


Imaging

Hyperspectral line scan imaging microscopy with linear segregation for automated identification of two-dimensional crystals
ACS Photonics 2020, 7, 5, 1216-1225
DOI: 10.1021 / acsphotonics.0c00050

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Phase-resolved detection of ultra-broadband THz pulses in a scanning tunneling microscope transition
ACS Photonics 2020, 7, 8, 2046-2055
DOI: 10.1021 / acsphotonics.0c00386

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Terahertz scanning tunneling microscopy for the visualization of ultrafast electron movements in nanoscale potential variations
ACS Photonics 2021, 8, 1, 315-323
DOI: 10.1021 / acsphotonics.0c01572

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Phase-resolved surface plasmon scattering investigated by cathodoluminescence holography
ACS Photonics 2020, 7, 6, 1476-1482
DOI: 10.1021 / acsphotonics.0c00209


equipment

Flexible and Extensible Photonics: The Next Opportunities
ACS Photonics 2020, 7, 10, 2618-2635
DOI: 10.1021 / acsphotonics.0c00983

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On-chip mid-infrared supercontinuum generation from 3 to 13 μm wavelength
ACS Photonics 2020, 7, 12, 3423-3429
DOI: 10.1021 / acsphotonics.0c01232

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Highly sensitive flexible photo detectors based on MOVPE Grown Uniform Few-Layer MoS2
ACS Photonics 2020, 7, 6, 1388-1395
DOI: 10.1021 / acsphotonics.0c00361

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Microwave programmable graphene metasurface
ACS Photonics 2020, 7, 6, 1425-1435
DOI: 10.1021 / acsphotonics.9b01807


energy

Photonics for Photovoltaics: Advances and Opportunities
ACS Photonics 2021, 8, 1, 61-70
DOI: 10.1021 / acsphotonics.0c01045

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Insights into the ultra-fast carrier dynamics in perovskite thin films and solar cells
ACS Photonics 2020, 7, 8, 1893-1907
DOI: 10.1021 / acsphotonics.0c00677

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Nanophotonic emission control for improved photovoltaic efficiency
ACS Photonics 2020, 7, 7, 1589-1602
DOI: 10.1021 / acsphotonics.0c00152

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Colored radiation cooling coatings with nanoparticles
ACS Photonics 2020, 7, 5, 1312-1322
DOI: 10.1021 / acsphotonics.0c00513


Nanophotonics

Nanophotonic structural colors
ACS Photonics 2021, 8, 1, 18-33
DOI: 10.1021 / acsphotonics.0c00947

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Exciton polaritons with magnetic and electrical character in fully dielectric meta-surfaces
ACS Photonics 2020, 7, 5, 1226-1234
DOI: 10.1021 / acsphotonics.0c00063

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Dielectric resonant metaphotonics
ACS Photonics 2021, 8, 1, 102-112
DOI: 10.1021 / acsphotonics.0c01315

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Quantum yield limits for the detection of single-molecule fluorescence enhancement by a gold nanorod
ACS Photonics 2020, 7, 9, 2498-2505
DOI: 10.1021 / acsphotonics.0c00803

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