Results 21 to 30 of about 14,936 (237)

Synthesis, Photoluminescent Characteristics and Eu³⁺-Induced Phase Transitions in Sr₃Zr₂O₇:Eu³⁺ Red Phosphors

Nanomaterials, 2023
Designing phosphors that are excited by blue light is extraordinarily important for white light-emitting diodes (w-LEDs). In the present study, a new Ruddlesden–Popper type of SZO:xEu3+ (x = 0.01~0.10) phosphors was developed using solid-state reactions.
Nianmin Chen, Yunjian Wang, Longfeng Li, Lei Geng, Maolin Zhang   +4 more
doaj   +1 more source

Phytochemical mediated synthesis of ZnO:Dy3+ nanophosphors: Judd–Ofelt analysis, structural and spectroscopic properties

Journal of Science: Advanced Materials and Devices, 2020
In the present work, ZnO:Dy3+ nanophosphors were synthesized by a simple, cost effective and eco-friendly route using the aqueous extract of Azadirachta Indica leaves.
Prathibha Vasudevan, Viji Vidyadharan, Sanu Mathew Simon, Unnikrishnan N. V   +3 more
doaj   +1 more source

White-light oblique-incidence diffuse reflectance spectroscopy for classification of in-vivo pigmented skin lesions [PDF]

SPIE Proceedings, 2007
A study of in-vivo classification of pigmented skin lesions using oblique-incidence diffuse reflectance spectroscopy is presented. Spatio-spectral data in the wavelength range from 455 to 765 nm are collected from 111 pigmented lesions including 10 histopathologically diagnosed as melanoma. The first 67 lesions are used for training the classifiers,
Garcia-Uribe, Alejandro, Smith, Elizabeth B., Duvic, Madeleine, Wang, Lihong V.   +3 more
openaire   +2 more sources

Autofluorescence and diffuse reflectance spectroscopic analysis of oral premalignancy and malignancy

Journal of Indian Academy of Oral Medicine and Radiology, 2009
Early detection of squamous cell carcinoma in the oral cavity can improve survival. It is often difficult to distinguish neoplastic and premalignant disorders with standard white light illumination.
S Jayachandran, Virender Gombra, S Ganesan, Sivabalan   +3 more
doaj   +1 more source

Absorbance based light emitting diode optical sensors and sensing devices [PDF]

, 2008
The ever increasing demand for in situ monitoring of health, environment and security has created a need for reliable, miniaturised sensing devices. To achieve this, appropriate analytical devices are required that possess operating characteristics of ...
O'Toole, Martina, Dermot Diamond, O\u27Toole, Martina, Martina O’Toole, Diamond, Dermot, Martina O’Toole   +5 more
core   +1 more source

Materials and techniques used for the “Vienna Moamin”: multianalytical investigation of a book about hunting with falcons from the thirteenth century

Heritage Science, 2021
A multianalytical approach was used to characterize the materials in the “Vienna Moamin”, an outstanding richly illustrated manuscript from the late thirteenth century, which was made in Italy and is now kept in the Kunsthistorisches Museum Wien.
Wilfried Vetter, Bernadette Frühmann, Federica Cappa, Manfred Schreiner   +3 more
doaj   +1 more source

Label-free kinetic study of biomolecular interactions by white light reflectance spectroscopy

Micro & Nano Letters, 2006
Binding of biomolecules in real-time is studied by white light reflectance spectroscopy (WLRS). The experimental apparatus consists of a WLRS setup and a microfluidic channel for the supply of the biomolecules solutions placed above the sample on which the biomolecular interactions take place.
Zavali, M., Petrou, P. S., Kakabakos, S. E., Kitsara, M., Raptis, I., Beltsios, K., Misiakos, K.   +6 more
openaire   +2 more sources

Synthesis, crystal structure and excellent photoluminescence properties of copper (II) and cobalt (II) complexes with Bis(1[(4-butylphenyl)imino]methyl naphthalen-2-ol) Schiff base

Journal of Science: Advanced Materials and Devices, 2018
Copper (II) and Cobalt (II) metal complexes (4a- and 4b-complexes) using Schiff base ligand 1-[(4-butylphenyl)imino]methyl naphthalen-2-ol (3) have been synthesized.
V.B. Nagaveni, K.M. Mahadevan, G.R. Vijayakumar, H. Nagabhushana, S. Naveen, N.K. Lokanath   +5 more
doaj   +1 more source

Formation of zinc oxalate from zinc white in various oil binding media: the influence of atmospheric carbon dioxide by reaction with 13CO2

Heritage Science, 2020
The formation of metal oxalates in paintings has recently gained a great deal of interest within the field of heritage science as several types of oxalate compounds have been identified in oil paintings.
Kim Pilkjær Simonsen, Josephine Niemann Poulsen, Frederik Vanmeert, Morten Ryhl-Svendsen, Jesper Bendix, Jana Sanyova, Koen Janssens, Francisco Mederos-Henry   +7 more
doaj   +1 more source

Enhanced Photodegradation of Rhodamine B Using Visible-Light Sensitive N-TiO₂/rGO Composite

Crystals, 2023
Rhodamine B (RhB) is extensively used for dyeing purposes, and cannot be completely removed using traditional water treatment technologies. Here, we report for the first time the photodegradation of RhB using nitrogen-doped titanium dioxide (N-TiO2) on ...
Maisari Utami, Shaobin Wang, Febi Indah Fajarwati, Siva Nur Salsabilla, Tania Amara Dewi, Melinda Fitri   +5 more
doaj   +1 more source