Results 51 to 60 of about 7,579,363 (303)

Nonlinear optical absorption and optical limiting of olive oil by using Z-scan technique [PDF]

JES: Journal of Engineering Sciences
Olive oil is classified as an organic chemical that possesses intriguing nonlinear optical characteristics. As a result, it is an appealing option for usage in photonic applications.
Abeer Salah, Ahmed Saad, Gamal Afifi
doaj   +1 more source

Third- and fifth-order optical nonlinearities of norbixin

Results in Optics, 2022
In this work, we investigated the nonlinear response of norbixin (C24H28O4) in acetone. The third- and fifth-order optical nonlinearities were measured using the conventional Z-scan technique, with 357 fs laser pulses at 1040 nm and low-repetition rate ...
Nefe Jefferson Brito e Silva, Francisco das Chagas de Melo Brito, Henrique T.M.C.M. Baltar, Janildo Lopes Magalhães, Vicente Galber Freitas Viana, Francisco Eroni P. Santos, Hans A. Garcia   +6 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Study of Absorption Saturation in InN Thin Films through the Z-Scan Technique at 1.55 μm [PDF]

, 2018
Novel Optical Materials and Applications 2018, 2–5 July 2018, Zurich Switzerland.We investigate the nonlinear absorption saturation effect of thin InN films at 1.55 μm through the z-scan technique, varying the pumping peak intensity. Over 30 % nonlinear
González Herráez, Miguel, Naranjo Vega, Fernando Bernabé, Monroy, Eva, Monroy Lafuente, Laura, Jiménez Rodríguez, Marco, Núñez Cascajero, Arántzazu, E. Monroy, F. B. Naranjo, A. Núñez-Cascajero, M. González-Herráez, M. Jimenez-Rodriguez, L. Monroy   +11 more
core   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Study The Influence of Doping Electric and Magnetic Nanoparticles on The Nonlinear Optical Properties of Nematic Liquid Crystals

Iraqi Journal of Physics, 2020
The nonlinear optical properties response of nematic liquid crystal (6CHBT) and the impact of doping with two kinds of nanoparticles; Fe3O4 magnetic nanoparticles and SbSI ferroelectric nanoparticles have been studied using the non-linear dynamic method
Aseel Ibrahim, Rawa Ibrahim, Ali Abdullah, Ali Baki, Ghaidaa Khudair, Veronika Gdovinova, Peter Kopcansky   +6 more
doaj   +1 more source

Large nonlinear absorption in single aggregate of silver nanoparticles observed with z-scan imaging technique

AIP Advances, 2021
Although nonlinear optical spectroscopy of nanostructures, nanomaterials, and nanomedicines has been widely used to observe and study the nature of nonlinear optical (NLO) phenomena, the field has to improve for the single nanostructure system.
Hendry Izaac Elim
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Z-scan study of nonlocal nonlinear optical response in different organic oils under CW visible illumination

Materials Research Express
This work presents a comparative study of the third-order nonlinear optical response of differents organic liquid media derived from plants (Castor, Avocado, Sesame, and Peanut) and animal (Fish) source, emphasizing nonlinear refraction and absorption ...
M M Méndez Otero, R Torres Romero, J J Méndez Rodríguez, S A Sabinas Hernández, M L Arroyo Carrasco, M D Iturbe Castillo, E De Florencio Maximo, E V García Ramírez   +7 more
doaj   +1 more source

Comparative study of the linear and nonlinear optical properties for different Iraqi heavy and light crude oils

Iraqi Journal of Physics, 2020
Iraqi oil crudes have some of the physical and chemical characteristics that distinguish it from other types of oil crudes in the world. Some of these features such us molecular composition, rheological, viscosity and emulsions are studied carefully by ...
Aseel I. Mahmood, Sawsan K. Fandi, Hayder A. Naser   +2 more
doaj   +1 more source