Results 51 to 60 of about 297,618 (272)

Stacking-symmetry governed second harmonic generation in graphene trilayers [PDF]

open access: yes, 2018
Crystal symmetry plays a central role in governing a wide range of fundamental physical phenomena. One example is the nonlinear optical second harmonic generation (SHG), which requires inversion symmetry breaking. Here we report a unique stacking-induced
Huang, Di   +6 more
core   +2 more sources

Adaptaquin is selectively toxic to glioma stem cells through disruption of iron and cholesterol metabolism

open access: yesMolecular Oncology, EarlyView.
Adaptaquin selectively kills glioma stem cells while sparing differentiated brain cells. Transcriptomic and proteomic analyses show Adaptaquin disrupts iron and cholesterol homeostasis, with iron chelation amplifying cytotoxicity via cholesterol depletion, mitochondrial dysfunction, and elevated reactive oxygen species.
Adrien M. Vaquié   +16 more
wiley   +1 more source

H-ABC tubulinopathy revealed by label-free second harmonic generation microscopy

open access: yesScientific Reports, 2022
Hypomyelination with atrophy of the basal ganglia and cerebellum is a recently described tubulinopathy caused by a mutation in the tubulin beta 4a isoform, expressed in oligodendrocytes.
Milvia Alata   +5 more
doaj   +1 more source

Optical second harmonic generation probe of two-dimensional ferroelectricity [PDF]

open access: yes, 1999
Optical second harmonic generation (SHG) is used as a noninvasive probe of two-dimensional (2D) ferroelectricity in Langmuir-Blodgett (LB) films of copolymer vinylidene fluoride with trifluorethylene.
Aktsipetrov   +16 more
core   +2 more sources

X-Ray Second Harmonic Generation

open access: yesPhysical Review Letters, 2014
We report clear experimental evidence for second harmonic generation at hard x-ray wavelengths. Using a 1.7 Å pumping beam generated by a free electron laser, we observe second harmonic generation in diamond. The generated second harmonic is of order 10 times the background radiation, scales quadratically with pump pulse energy, and is generated over a
Shwartz, S.   +11 more
openaire   +3 more sources

Predictors of response and rational combinations for the novel MCL‐1 inhibitor MIK665 in acute myeloid leukemia

open access: yesMolecular Oncology, EarlyView.
This study characterizes the responses of primary acute myeloid leukemia (AML) patient samples to the MCL‐1 inhibitor MIK665. The results revealed that monocytic differentiation is associated with MIK665 sensitivity. Conversely, elevated ABCB1 expression is a potential biomarker of resistance to the treatment, which can be overcome by the combination ...
Joseph Saad   +17 more
wiley   +1 more source

Optical Second Harmonic Generation of Low-Dimensional Semiconductor Materials

open access: yesNanomaterials
In recent years, the phenomenon of optical second harmonic generation (SHG) has attracted significant attention as a pivotal nonlinear optical effect in research. Notably, in low-dimensional materials (LDMs), SHG detection has become an instrumental tool
Yue Fu   +5 more
doaj   +1 more source

Ultrabroadband Optical Phenomena in Quadratic Nonlinear Media

open access: yesIEEE Photonics Journal, 2010
We present a comprehensive framework to study the nonlinear evolution of ultrabroadband optical pulses in quadratic nonlinear media. We employ a nonlinear envelope equation that goes beyond the traditional slowly varying approximation and allows ...
M. Conforti, F. Baronio, C. De Angelis
doaj   +1 more source

Gurevich-Zybin system

open access: yes, 2005
We present three different linearizable extensions of the Gurevich-Zybin system. Their general solutions are found by reciprocal transformations. In this paper we rewrite the Gurevich-Zybin system as a Monge-Ampere equation.
Alber S I   +23 more
core   +1 more source

Nonlinear-optical frequency-doubling meta-reflector: pulsed regime [PDF]

open access: yes, 2015
The properties of backward-wave second harmonic meta-reflector operating in pulse regime are investigated. We show that ratio of the income pulse length to the thickness of the metaslab determines its important operational properties which are in ...
Myslivets, Sergey A.   +1 more
core   +2 more sources

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