Results 101 to 110 of about 69,474 (333)

Local scattering anisotropy of the skin as a possible factor of fluorescence borders distortion of neoplasms

Biomedical Photonics
The use of protoporphyrin IX fluorescence imaging in skin tumors is limited by the complexity of light propagation in tissues. A non-invasive scat- tering anisotropy test (comparison of the fluorescence pattern of a tumor with that of a point source ...
N. P. Kiryushchenkova, I. A. Novikov
doaj   +1 more source

Past, Present and Future of UHECR Observations

, 2017
Great advances have been made in the study of ultra-high energy cosmic rays (UHECR) in the past two decades. These include the discovery of the spectral cut-off near 5 x 10^19 eV and complex structure at lower energies, as well as increasingly precise ...
Dawson, B. R., Fukushima, M., Sokolsky, P.   +2 more
core   +1 more source

Cosmic Rays from the Ankle to the Cut-Off [PDF]

, 2014
Recent advances in measuring and interpreting cosmic rays from the spectral ankle to the highest energies are briefly reviewed. The prime question at the highest energies is about the origin of the flux suppression observed at E ~ 4x10^{19} eV.
Kampert, Karl-Heinz, Tinyakov, Peter
core   +2 more sources

Unprecedented Spin‐Lifetime of Itinerant Electrons in Natural Graphite Crystals

Advanced Functional Materials, EarlyView.
Graphite exhibits extraordinary spintronic potential, with electron spin lifetimes reaching 1,000 ns at room temperature ‐ over 100 times longer than graphene‐based devices. Magnetic resonance spectroscopy reveals strong anisotropy: out‐of‐plane spins live 50 times longer than their in‐plane counterparts.
Bence G. Márkus, Dávid Beke, Lili Vajtai, András Jánossy, László Forró, Ferenc Simon   +5 more
wiley   +1 more source

Nanomaterial‐Integrated Fiber Neural Probes for Deep Brain Monitoring and Modulation: Challenges and Opportunities

Advanced Functional Materials, EarlyView.
The article presents nanomaterial‐integrated fiber neural probes as innovative tools for deep brain molecular sensing, neural stimulation, and temperature monitoring. It examines breakthroughs in SERS‐based biomolecule detection, thermoplasmonic activation, and luminescent thermometry, alongside strategies to overcome stability, specificity, and ...
Di Zheng, Yang Li, Muhammad Fayyaz Kashif, Linda Piscopo, Massimo De Vittorio, Ferruccio Pisanello   +5 more
wiley   +1 more source

Fluorescence anisotropy of oligomeric proteins

Journal of Spectroscopy, 2004
Previous studies of protein oligomerization using time‐resolved fluorescence anisotropy assumed a single fixed probe per oligomeric complex and an identical probe orientation in complexes of different stoichiometry. However, an oligomer consisting of “n” singly labeled monomers must necessarily have “n” probes.
openaire   +1 more source

Bioinspired Bromination Enables Extensible, Strain‐Stiffening Resilin Peptide Scaffolds with Tunable Degradation

Advanced Functional Materials, EarlyView.
Bioinspired bromination of a resilin‐derived peptide enables the fabrication of electrospun nanofibrous scaffolds that uniquely combine strain‐stiffening elasticity, proteolytic stability, and antioxidant functionality. These brominated peptide–gelatin hybrids mimic the extensibility of natural elastomers, demonstrating tunable mechanical resilience ...
Elisa Marelli, Lorenzo Sori, Chiara Russo, Claudia Pigliacelli, Lorenza Draghi, Monica Soncini, Pierangelo Metrangolo   +6 more
wiley   +1 more source

An insight into polarization states of solid-state organic lasers

, 2012
The polarization states of lasers are crucial issues both for practical applications and fundamental research. In general, they depend in a combined manner on the properties of the gain material and on the structure of the electromagnetic modes.
A. Brosseau, A. Matsko, B. Valeur, C. Lafargue, C. Ulysse, G. Clavier, I. Gozhyk, J. R. Lakowicz, J. Zyss, J.-F. Audibert, M. Dvorko, M. Lebental, O. Svelto, R. Méallet-Renault, R. Pansu, S. Chénais, S. Forget, S. Lozenko, V. Tsvirkun   +18 more
core   +2 more sources

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

The use of NADH anisotropy to investigate mitochondrial cristae alignment

Scientific Reports
Life may be expressed as the flow of electrons, protons, and other ions, resulting in large potential difference. It is also highly photo-sensitive, as a large proportion of the redox capable molecules it relies on are chromophoric. It is thus suggestive
Holly. E. Smith, Alasdair M. Mackenzie, Chloe Seddon, Rhys Mould, Ifi Kalampouka, Partha Malakar, Sarah R. Needham, Konstantinos Beis, Jimmy D. Bell, Alistair Nunn, Stanley W. Botchway   +10 more
doaj   +1 more source