Articles with "sum frequency" as a keyword



Boosted Second Harmonic Generation and Cascaded Sum Frequency Generation from a Surface Crystallized Glass Ceramic Microcavity

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Published in 2024 at "Advanced Materials"

DOI: 10.1002/adma.202313219

Abstract: The development of novel materials and structures for efficient second‐order nonlinear micro/nano devices remains a significant challenge. In this study, the remarkable enhancement of second‐harmonic generation (SHG) and cascaded sum frequency generation in whispering gallery… read more here.

Keywords: frequency generation; generation; glass; sum frequency ... See more keywords

Full Crystallographic Imaging of Hexagonal Boron Nitride Monolayers with Phonon-Enhanced Sum-Frequency Microscopy.

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Published in 2025 at "Advanced materials"

DOI: 10.1002/adma.202510124

Abstract: Hexagonal boron nitride (hBN) is an important 2D material for van der Waals heterostructures, single photon emitters, and infrared nanophotonics. The optical characterization of mono- and few-layer samples of hBN however, remains a challenge as… read more here.

Keywords: boron nitride; frequency microscopy; full crystallographic; sum frequency ... See more keywords

Flow Alters the Interfacial Reactions of Upconversion Nanocrystals Probed by In Situ Sum Frequency Generation

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Published in 2020 at "Advanced Materials Interfaces"

DOI: 10.1002/admi.201902046

Abstract: Particle moving is a fundamental phenomenon of colloidal nanoparticles (NPs), but its influence on the interfacial interaction is far from been clarified. Herein, by mimicking the particle moving of upconverting fluoride NPs in a flowing… read more here.

Keywords: interfacial reactions; frequency generation; situ sum; particle moving ... See more keywords

Nd:GdVO4/Yb:YAG Intracavity Sum-Frequency CW Blue Laser Operating at 484 nm

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Published in 2020 at "Journal of Russian Laser Research"

DOI: 10.1007/s10946-020-09922-5

Abstract: We study a continuous-wave sum-frequency blue laser operating at 484 nm. The laser elaborated is based on the intracavity pumping technology. A 912 nm laser produced by an end-pumped Nd:GdVO4 crystal, using an 808 nm… read more here.

Keywords: laser; sum frequency; frequency blue; laser operating ... See more keywords

Effect of Ca2+ to Sphingomyelin Investigated by Sum Frequency Generation Vibrational Spectroscopy.

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Published in 2017 at "Biophysical journal"

DOI: 10.1016/j.bpj.2017.04.026

Abstract: The interactions between Ca2+ ions and sphingomyelin play crucial roles in a wide range of cellular activities. However, little is known about the molecular details of the interactions at interfaces. In this work, we investigated… read more here.

Keywords: frequency generation; sum frequency; vibrational spectroscopy; spectroscopy ... See more keywords

Resonant X-ray Sum-Frequency-Generation Spectroscopy of K-edges in Acetyl Fluoride.

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Published in 2019 at "Journal of chemical theory and computation"

DOI: 10.1021/acs.jctc.9b00642

Abstract: Resonant X-ray sum-frequency generation is calculated for excitations of the fluorine and oxygen core K-edge in acetyl fluoride using real-time time-dependent density functional theory. The signal is generated by an extreme-ultraviolet followed by an X-ray… read more here.

Keywords: ray sum; resonant ray; sum frequency; spectroscopy ... See more keywords

Multicolor Chemical Imaging by Sum Frequency Generation Imaging Microscopy of Monolayers on Metal Surfaces

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Published in 2020 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.0c02038

Abstract: Sum frequency generation imaging microscopy (SFG-IM) is a unique surface-specific technique that can detect the spatial distributions of differing monolayer species based on chemical contrast. Here... read more here.

Keywords: generation imaging; frequency generation; microscopy; sum frequency ... See more keywords
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Vibrational Sum Frequency Scattering in Absorptive Media: A Theoretical Case Study of Nano-objects in Water

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Published in 2020 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.0c05196

Abstract: The structures of interfaces of nano- and microscale objects in an aqueous solution are important for a wide variety of physical, chemical, and biological processes. Vibrational sum frequency (SF) ... read more here.

Keywords: frequency scattering; absorptive media; sum frequency; scattering absorptive ... See more keywords

Symmetric Raman Tensor Contributes to Chiral Vibrational Sum-Frequency Generation from Binaphthyl Amphiphile Monolayers on Water: Study of Electronic Resonance Amplitude and Phase Profiles

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Published in 2017 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.6b12664

Abstract: Heterodyne-detected vibrationally electronically doubly resonant chiral sum-frequency generation (HD-DR chiral SFG) spectra were observed for the first time on monolayers. Langmuir monolayers of R- and S-binaphthyl amphiphiles on water exhibited complex chiral vibrational sum frequency… read more here.

Keywords: raman tensor; frequency generation; raman; sum frequency ... See more keywords

Experimental and Theoretical Study of Azimuth Angle and Polarization Dependences of Sum-Frequency-Generation Vibrational Spectral Features of Uniaxially Aligned Cellulose Crystals

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Published in 2017 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.7b03037

Abstract: Comprehensive interpretation of vibrational sum-frequency-generation (SFG) spectroscopic features of SFG-active nanodomains interspersed in amorphous bulk requires the knowledge of nonlinear susceptibility, χijk(2), of the SFG-active phase as a function of its spatial arrangement in the… read more here.

Keywords: azimuth angle; frequency generation; angle polarization; sum frequency ... See more keywords
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Using Heterodyne-Detected Electronic Sum Frequency Generation to Probe the Electronic Structure of Buried Interfaces

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Published in 2017 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.7b05514

Abstract: Organic semiconductors (OSCs) are attractive optoelectronic materials due to their high extinction coefficients, processing advantages, and ability to display unique phenomena such as singlet exciton fission. However, employing OSCs as active electronic components remains challenging… read more here.

Keywords: frequency generation; sum frequency; electronic sum;