Results 21 to 30 of about 2,832 (214)

Preventing cation intermixing enables 50% quantum yield in sub-15 nm short-wave infrared-emitting rare-earth based core-shell nanocrystals

Nature Communications, 2023
Short-wave infrared (SWIR) fluorescence could become the new gold standard in optical imaging for biomedical applications due to important advantages such as lack of autofluorescence, weak photon absorption by blood and tissues, and reduced photon ...
Fernando Arteaga Cardona, Noopur Jain, Radian Popescu, Dmitry Busko, Eduard Madirov, Bernardo A. Arús, Dagmar Gerthsen, Annick De Backer, Sara Bals, Oliver T. Bruns, Andriy Chmyrov, Sandra Van Aert, Bryce S. Richards, Damien Hudry   +13 more
doaj   +1 more source

Shortwave infrared emitting multicolored nanoprobes for biomarker-specific cancer imaging in vivo

BMC Cancer, 2020
Background The ability to detect tumor-specific biomarkers in real-time using optical imaging plays a critical role in preclinical studies aimed at evaluating drug safety and treatment response. In this study, we engineered an imaging platform capable of
Harini Kantamneni, Shravani Barkund, Michael Donzanti, Daniel Martin, Xinyu Zhao, Shuqing He, Richard E. Riman, Mei Chee Tan, Mark C. Pierce, Charles M. Roth, Vidya Ganapathy, Prabhas V. Moghe   +11 more
doaj   +1 more source

Real-Time Imaging of Short-Wave Infrared Luminescence Lifetimes for Anti-counterfeiting Applications

Frontiers in Chemistry, 2021
Rare-earth doped nanoparticles (RENPs) have been widely used for anti-counterfeiting and security applications due to their light frequency conversion features: they are excited at one wavelength, and they display spectrally narrow and distinguished ...
Roman Ziniuk, Artem Yakovliev, Hui Li, Guanying Chen, Junle Qu, Tymish Y. Ohulchanskyy   +5 more
doaj   +1 more source

Mineral Mapping Using Simulated Worldview-3 Short-Wave-Infrared Imagery

Remote Sensing, 2013
WorldView commercial imaging satellites comprise a constellation developed by DigitalGlobe Inc. (Longmont, CO, USA). Worldview-3 (WV-3), currently planned for launch in 2014, will have 8 spectral bands in the Visible and Near-Infrared (VNIR), and an ...
Sandra L. Perry, Fred A. Kruse
doaj   +1 more source

Design of SFSI: An Imaging Spectrometer in the SWIR

Canadian Journal of Remote Sensing, 1992
RESUMELe CCT a entrepris, avec la collaboration du CNRC, la mise au point d'un spectrometre-imageur dans la region des faibles longueurs d'onde de l'infrarouge. L'objectif est d'obtenir a la fois de hautes resolutions spectrales (10 nm) et spatiales (50 cm) a partir d'une plate-forme aerienne et d'enregistrer tous les spectres pour chacun des pixels ...
R.A. Neville, I. Powell
openaire   +1 more source

A Review of Image Sensors Used in Near-Infrared and Shortwave Infrared Fluorescence Imaging

Sensors
To translate near-infrared (NIR) and shortwave infrared (SWIR) fluorescence imaging into the clinic, the paired imaging device needs to detect trace doses of fluorescent imaging agents.
Banghe Zhu, Henry Jonathan
doaj   +1 more source

Minimally Invasive Delivery of Optical Nanosensors Using Injectable Hydrogels

Advanced Materials Interfaces, EarlyView.
Injectable peptide hydrogels offer a minimally invasive delivery platform for single‐walled carbon nanotube (SWCNT)‐based near‐infrared fluorescent sensors, enabling real‐time measurement of drug concentrations. Encapsulated SWCNTs show a dose‐dependent fluorescence response across physiologically relevant concentrations and retain their fluorescence ...
Shirel Kleiner, Gili Bisker
wiley   +1 more source

Facet‐Specific PbS Quantum Dot Passivation Using Halide Perovskites for SWIR Photodetectors

Advanced Materials Interfaces, EarlyView.
PbS quantum dots (QDs) are emerging as powerful short‐wave infrared photodetectors, yet the passivation mechanism of large QDs by perovskites ‐ critical for their stability ‐ remains unexplained. Here, we unveil the ligand structure of CH3NH3PbI3 (MAPI)‐passivated 4‐nm PbS QDs using FTIR, XPS, SEM, NMR, and DFT.
L. Paillardet, M. Gromova, D. Liu, A. S. Vasenko, O. V. Prezhdo, S. Alarab, G. De Paëpe, G. Lefevre, S. Charlot, O. Gourhant, B. Mortini, P. Reiss, J.‐M. Verilhac, D. Aldakov   +13 more
wiley   +1 more source

Short‐wave Infrared Photoluminescence Lifetime Mapping of Rare‐Earth Doped Nanoparticles Using All‐Optical Streak Imaging

Advanced Science
The short‐wave infrared (SWIR) photoluminescence lifetimes of rare‐earth doped nanoparticles (RENPs) have found diverse applications in fundamental and applied research. Despite dazzling progress in the novel design and synthesis of RENPs with attractive
Miao Liu, Yingming Lai, Miguel Marquez, Fiorenzo Vetrone, Jinyang Liang   +4 more
doaj   +1 more source

Tunable Extraordinary Optical Transmission in the Long‐Wavelength Infrared Range Using Electrostatic MEMS Actuation

Advanced Materials Technologies, EarlyView.
A MEMS‐integrated metamaterial filter enables continuous, low‐voltage spectral tuning in the long‐wavelength infrared (LWIR). The device employs extraordinary optical transmission in a dual suspended metasurface stack, where electrostatic actuation precisely controls the intermembrane air gap.
Oleg Bannik, Fedor Kovalev, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Ilya Shadrivov, Mariusz Martyniuk   +6 more
wiley   +1 more source