Results 71 to 80 of about 275,683 (312)

SECOND HARMONIC GENERATION IN NANOSTRUCTURED METAMATERIALS [PDF]

, 2022
"We conduct a theoretical and numerical study on the second-harmonic (SH) optical response of nanostructured metamaterials. Metamaterials are composed of a periodic array of metallic or dielectric inclusions.
Ulises Ramírez
core  

Impact of Asymptomatic Intracranial Hemorrhage on Outcome After Endovascular Stroke Treatment

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Endovascular treatment (EVT) achieves high rates of recanalization in acute large‐vessel occlusion (LVO) stroke, but functional recovery remains heterogeneous. While symptomatic intracranial hemorrhage (sICH) has been well studied, the prognostic impact of asymptomatic intracranial hemorrhage (aICH) after EVT is less certain ...
Shihai Yang, Chengsong Yue, Zhuang Li, Xiaolei Shi, Haoxuan Zhu, Jie Yang, Linyu Li, Jiaxing Song, Shitao Fan, Gaoming Li, Wenzhe Sun, Zhixian Ye, Jiacheng Huang, Dahong Yang, Jinfu Ma, Xu Xu, Zhixi Wang, Lilan Wang, Guojian Liu, Fengli Li, Changwei Guo, Li Qi, Wenjie Zi   +22 more
wiley   +1 more source

Second-Harmonic Generation in Mie-Resonant GaAs Nanowires

Applied Sciences, 2019
We investigate the enhancement of second-harmonic generation in cylindrical GaAs nanowires. Although these nanostructures confine light in two dimensions, power conversion efficiencies on the order of 10 − 5 with a pump peak intensity
Domenico de Ceglia, Luca Carletti, Maria Antonietta Vincenti, Costantino De Angelis, Michael Scalora   +4 more
doaj   +1 more source

Influence of magnetism on second harmonic generation [PDF]

Physical Review Letters, 1993
Optical second harmonic generation (SHG) in 75\ifmmode^\circ\else\textdegree\fi{} reflection was studied on longitudinally magnetized PtMnSb(111) and magnetic circular dichroism was observed with SHG. For circularly polarized incident light of 532 nm it amounts to (7\ifmmode\pm\else\textpm\fi{}1)%.
Reif, J., Rau, C., Matthias, E.
openaire   +3 more sources

Multidimensional Profiling of MRI‐Negative Temporal Lobe Epilepsy Uncovers Distinct Phenotypes

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Although hippocampal sclerosis (TLE‐HS) represents the most frequent cause of temporal lobe epilepsy (TLE), up to 30% of patients show no lesion on visual MRI inspection (TLE‐MRIneg). These cases pose diagnostic and therapeutic challenges and are underrepresented in surgical series.
Alice Ballerini, Alessia Casarini, Niccolò Biagioli, Laura Mirandola, Daniela Ballotta, Paul Summers, Simona Scolastico, Laura Madrassi, Maurilio Genovese, Marcella Malagoli, Gaetano Cantalupo, Giada Giovannini, Matteo Pugnaghi, Niccolò Orlandi, Laura Tassi, Valeria Cuccarini, Domenico Aquino, Elena Tartara, Fulvia Palesi, Giuseppe Didato, Paolo Vitali, the 3TLE Study Group, Roberta Di Giacomo, Fabio Doniselli, Federica Mazzi, Carlo Andrea Galimberti, Claudia A. M. Gandini Wheeler‐Kingshott, Stefano Meletti, Anna Elisabetta Vaudano   +28 more
wiley   +1 more source

Interferometric second harmonic generation microscopy

Optics Express, 2004
We describe a novel second harmonic generation (SHG) microscope that employs heterodyne detection by interfering the epi directed SHG from a sample with SHG from a reference crystal. In addition, the microscope provides complementary reflectance information based on optical coherence microscopy (OCM).
Siavash, Yazdanfar, Lily, Laiho, Peter, So   +2 more
openaire   +2 more sources

Second-harmonic generation in absorptive media [PDF]

Optics Letters, 1994
The solution of the coupled-wave equations for second-harmonic generation in a near-resonant three-level system is extended to include absorption. It is shown, within second-order perturbation theory, that double resonance is the optimal conversion condition, despite absorption enhancement.
G, Almogy, A, Yariv
openaire   +2 more sources

Innate Immune Reprogramming Mediated by Endogenous Retroelement Dysregulation Drives Multiple Sclerosis Progression

Annals of Clinical and Translational Neurology, EarlyView.
Epigenetic reprogramming in hematopoietic stem and progenitor cells (HSPCs) and downstream myeloid cells, mediated by H3.3 downregulation and endogenous retroelement (ERE) overexpression, contributes to the progression of multiple sclerosis (MS). ABSTRACT Background Skewed myelopoiesis in the bone marrow has been identified as a key driver of multiple ...
Li‐Mei Xiao, Qiu‐Ping Zhao, Run‐Yun Li, Wei Chen, Huan‐Huan Song, Wan‐Jin Chen, Ying Fu   +6 more
wiley   +1 more source

Second-harmonic generation tuning by stretching arrays of GaAs nanowires

, 2022
We present a wearable device with III-V nanowires in a flexible polymer, which is used for active mechanical tuning of the second-harmonic generation intensity.
Kristina Frizyuk (6192026), Rachel Grange (1670818), Esther Bloch (14412690), Elizaveta Lebedkina (14412693), Grégoire Saerens (14412687), Elizaveta Semenova (3963110), Olga Sergaeva (5244866), Maria Timofeeva (3147669), Viola V. Vogler-Neuling (11478532), Mihail Petrov (4344475)   +9 more
core   +1 more source

Second harmonic generation microscopy in zebrafish [PDF]

, 2016
Modern optical imaging has progressed rapidly with the ability to noninvasively image cellular and subcellular phenomena with high spatial and temporal resolution. In particular, emerging techniques such as second harmonic generation (SHG) microscopy can allow for the monitoring of intrinsic contrast, such as that from collagen, in live and fixed ...
D C, LeBert, J M, Squirrell, A, Huttenlocher, K W, Eliceiri   +3 more
openaire   +2 more sources