Results 1 to 10 of about 1,945,269 (285)

Spectroscopic studies on photodegradation of atorvastatin calcium

Scientific Reports, 2021
In this work, the photodegradation process of atorvastatin calcium (ATC) is reported as depending on: (1) the presence and the absence of excipients in the solid state; (2) the chemical interaction of ATC with phosphate buffer (PB) having pH equal to 7 ...
Madalina Oprica, Miruna Iota, Monica Daescu, Szilard N. Fejer, Catalin Negrila, Mihaela Baibarac   +5 more
doaj   +1 more source

Correlated studies of photoluminescence, vibrational spectroscopy and mass spectrometry concerning the pantoprazole sodium photodegradation

Scientific Reports, 2022
In this work, new optical evidences concerning the changes induced of the UV light on pantoprazole sodium (PS), in solid state and as aqueous solution, are reported by UV–VIS spectroscopy, photoluminescence (PL), Raman scattering and FTIR spectroscopy ...
Mihaela Baibarac, Mirela Paraschiv, Radu Cercel, Ion Smaranda, Cristina Bartha, Alexandru Trandabat   +5 more
doaj   +1 more source

KRbAl2B2O7: Eu2+: A new blue-emitting luminescent material with good thermal stability

Optical Materials: X, 2022
Exploring new efficient phosphor for lighting has always been a worthwhile and necessary work. Herein, we develop a new blue-emitting luminescent material KRbAl2B2O7:Eu2+ through the solid-state method.
Hang Chen, Yuhua Wang
doaj   +1 more source

Nanocomposite Photoanisotropic Materials for Applications in Polarization Holography and Photonics

Nanomaterials, 2023
Photoanisotropic materials, in particular azodyes and azopolymers, have attracted significant research interest in the last decades. This is due to their applications in polarization holography and 4G optics, enabling polarization-selective diffractive ...
Dimana Nazarova, Lian Nedelchev, Nataliya Berberova-Buhova, Georgi Mateev   +3 more
doaj   +1 more source

Efficient and Broadband Emission in Dy³⁺-Doped Glass-Ceramic Fibers for Tunable Yellow Fiber Laser

Nanomaterials, 2023
Yellow lasers are of great interest in biology, medicine and display technology. However, nonlinear emission of near-infrared lasers at yellow still presents particularly complex optical alignment to date.
Qianyi Chen, Minbo Wu, Puxian Xiong, Yajing Zhao, Shuhang Tian, Yao Xiao, Yongsheng Sun, Dongdan Chen, Shanhui Xu, Zhongmin Yang   +9 more
doaj   +1 more source

Fano Enhancement of Unlocalized Nonlinear Optical Processes [PDF]

, 2021
Field localization boosts nonlinear optical processes at the hot spots of metal nanostructures. Fano resonances can further enhance these "local" processes taking place at the hot spots.
Bek, Alpan, Cicek, Ahmet, Günay, Mehmet, Korozlu, Nurettin, Taşgın, Mehmet Emre   +4 more
core   +2 more sources

Multi-Dimensional Composite Frame as Bifunctional Catalytic Medium for Ultra-Fast Charging Lithium–Sulfur Battery

Nano-Micro Letters, 2022
The shuttle effect of soluble lithium polysulfides (LiPSs) between electrodes and slow reaction kinetics lead to extreme inefficiency and poor high current cycling stability, which limits the commercial application of Li–S batteries.
Shuhao Tian, Qi Zeng, Guo Liu, Juanjuan Huang, Xiao Sun, Di Wang, Hongcen Yang, Zhe Liu, Xichao Mo, Zhixia Wang, Kun Tao, Shanglong Peng   +11 more
doaj   +1 more source

High photoinduced birefringence in thermally treated layers of the azopolymer PAZO with significantly changed absorbance spectrum [PDF]

EPJ Web of Conferences
In this experimental work we present the effect of thermal treatment of azopolymer thin films on their absorbance spectra and how that influences the photoinduced birefringence of the azopolymer.
Mateev Georgi, Dimov Deyan, Nazarova Dimana, Stoykova Elena, Hong Keehoon, Nedelchev Lian   +5 more
doaj   +1 more source

Structured Optical Materials Controlled by Light [PDF]

, 2018
Materials of which the optical response is determined by their structure are of much interest both for their fundamental properties and applications. Examples range from simple gratings to photonic crystals.
Martella, Daniele, Nocentini, Sara, Parmeggiani, Camilla, Wiersma, Diederik S., Zanotto, Simone   +4 more
core   +3 more sources

Two-Dimensional Polarization Holographic Gratings in Azopolymer Thin Films: Polarization Properties in the Presence or Absence of Surface Relief

Photonics, 2023
During polarization holographic recording in azopolymer thin films, usually together with the volume anisotropic grating, a surface relief grating (SRG) is also formed.
Georgi Mateev, Lian Nedelchev, Ludmila Nikolova, Branimir Ivanov, Velichka Strijkova, Elena Stoykova, Kihong Choi, Joongki Park, Dimana Nazarova   +8 more
doaj   +1 more source