Articles with "photon" as a keyword



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Performance optimization of a tri-hybrid method for estimation of patient scatter into the EPID.

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Published in 2021 at "Journal of applied clinical medical physics"

DOI: 10.1002/acm2.13439

Abstract: On-treatment EPID images are contaminated with patient-generated scattered photons. If this component can be accurately estimated, its effect can be removed, and therefore a corresponding in vivo patient dose estimate will be more accurate. Our… read more here.

Keywords: photon; hybrid method; scatter; patient scatter ... See more keywords
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Optimized Photoinitiator for Fast Two‐Photon Absorption Polymerization of Polyester‐Macromers for Tissue Engineering

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Published in 2017 at "Advanced Engineering Materials"

DOI: 10.1002/adem.201600686

Abstract: The efficiency of two-photon polymerization (TPP) techniques depends on the photoinitiator (PI) systems. Objective of this study was to enhance the performance of a cyclopentanone-based PI by introducing polar side chains in order to increase… read more here.

Keywords: photon; engineering; optimized photoinitiator; polymerization ... See more keywords
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Multibranched Octupolar Module Embedded Covalent Organic Frameworks Enable Efficient Two‐Photon Fluorescence

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Published in 2020 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202000516

Abstract: Covalent organic frameworks (COFs) have emerged as potential light emitting polymers for optoelectronic and optical devices, but their nonlinear optical properties, particularly two‐photon absorption and fluorescence (TPA/TPF), have seldom been explored. Herein, to construct octupolar… read more here.

Keywords: two photon; photon fluorescence; covalent organic; organic frameworks ... See more keywords
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Precise Two-Photon Photodynamic Therapy using an Efficient Photosensitizer with Aggregation-Induced Emission Characteristics.

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Published in 2017 at "Advanced materials"

DOI: 10.1002/adma.201701076

Abstract: Two-photon photodynamic therapy (PDT) is able to offer precise 3D manipulation of treatment volumes, providing a target level that is unattainable with current therapeutic techniques. The advancement of this technique is greatly hampered by the… read more here.

Keywords: photon; photodynamic therapy; photosensitizer aggregation; two photon ... See more keywords
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Enhancing Photon Utilization Efficiency for High‐Performance Organic Photovoltaic Cells via Regulating Phase‐Transition Kinetics

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Published in 2023 at "Advanced Materials"

DOI: 10.1002/adma.202210865

Abstract: Efficient photon utilization is key to achieving high‐performance organic photovoltaic (OPV) cells. In this study, a multiscale fibril network morphology in a PBQx‐TCl:PBDB‐TF:eC9‐2Cl‐based system is constructed by regulating donor and acceptor phase‐transition kinetics. The distinctive… read more here.

Keywords: photon utilization; phase transition; efficiency; utilization efficiency ... See more keywords
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Excitonic Insulator Enabled Ultrasensitive Terahertz Photodetection with Efficient Low‐Energy Photon Harvesting

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Published in 2022 at "Advanced Science"

DOI: 10.1002/advs.202204580

Abstract: Despite the interest toward the terahertz (THz) rapidly increasing, the high‐efficient detection of THz photon is not widely available due to the low photoelectric conversion efficiency at this low‐energy photon regime. Excitonic insulator (EI) states… read more here.

Keywords: excitonic insulator; photon; low energy; energy photon ... See more keywords
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Enhancing Parameter Estimation Precision in a Dissipative Environment with Two‐Photon Driving

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Published in 2020 at "Annalen der Physik"

DOI: 10.1002/andp.201900387

Abstract: We investigate the frequency estimation of an optical field suffering from an unavoidable dissipative environment. Generally, dissipative noises greatly reduce the precision. Here, we find that two-photon driving can improve the measurement precision by resisting… read more here.

Keywords: photon; two photon; photon driving; precision ... See more keywords
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Robust Photon Transmission in Nonlinear Parity–Time‐Symmetric Cavities

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Published in 2021 at "Annalen der Physik"

DOI: 10.1002/andp.202000626

Abstract: Photon transfer in the nonlinear parity–time (PT)‐symmetry system of coupled cavities, which contains nonlinear gain and loss dependent on the intracavity photons, is explored. An analysis based on quantum Langevin equations is presented to study… read more here.

Keywords: nonlinear parity; efficiency; transfer; parity time ... See more keywords
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Synthesis and Characterization of Photoactivatable Doxycycline Analogues Bearing Two‐Photon‐Sensitive Photoremovable Groups Suitable for Light‐Induced Gene Expression

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Published in 2018 at "ChemBioChem"

DOI: 10.1002/cbic.201700628

Abstract: We report the synthesis and photolytic properties of caged 9‐aminodoxycycline derivatives modified with 2‐{4′‐bis‐[2‐(2methoxyethoxy)ethyl]‐4‐nitrobiphenyl‐3‐yl}prop‐1‐oxy (EANBP) and PEG7‐ylated (7‐diethylamino‐2‐oxo‐2H‐chromen‐4‐yl)methyl (PEG7‐DEACM) groups. 9‐Aminodoxycycline is a tetracycline analogue capable of activating transcription through the inducible TetOn transgene expression… read more here.

Keywords: photon sensitive; photon; two photon; light induced ... See more keywords
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Ground‐State Photoelectron Circular Dichroism of Methyl p‐Tolyl Sulfoxide by Single‐Photon Ionisation from a Table‐Top Source

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Published in 2022 at "Chemphyschem"

DOI: 10.1002/cphc.202200575

Abstract: Abstract Single‐photon ionisation of enantiopure methyl p‐tolyl sulfoxide by circularly polarised light at 133 nm shows remarkably strong photoelectron circular dichroism (PECD), which has been measured in a velocity‐map‐imaging spectrometer. Both enantiomers were measured, each showing… read more here.

Keywords: methyl tolyl; photon ionisation; tolyl sulfoxide; single photon ... See more keywords
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Tandem Systems for Two-Photon Uncaging of Bioactive Molecules.

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Published in 2019 at "ChemPlusChem"

DOI: 10.1002/cplu.201900139

Abstract: Photodeprotection of biological ligands with the combination of photolabile protecting groups (PPGs) and two-photon (2P) excitation techniques offers the possibility to control physiological phenomena with utmost spatial and temporal precision. Yet, designing PPGs with sufficient… read more here.

Keywords: tandem systems; two photon; uncaging bioactive; photon ... See more keywords