Highly transparent RCF/PTFE humidity and IR light dual-driven actuator with high force density, sensitivity and stability

We describe a new family of catalysts that undergo direct ground state singlet to excited state triplet excitation with IR light, leading to photoredox catalysis without the energy waste associated with intersystem crossing. The finding allows a mole scale reaction in batch using infrared irradiation.

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Analysis of Vibration Caused by Electromagnetic Force on Stator End-Winding of Large Dry Submersible Motor

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.416-417.428 ◽

2013 ◽

Vol 416-417 ◽

pp. 428-432

Author(s):

Li Shan ◽

Xiao Wei Cheng ◽

Yong Fang ◽

Xiao Hua Bao

Keyword(s):

Electromagnetic Field ◽

Steady State ◽

Transition State ◽

Electromagnetic Force ◽

Radial Displacement ◽

Radial Direction ◽

Axial Direction ◽

Axial Displacement ◽

Force Density ◽

Submersible Motor

This paper investigates the vibration which caused by electromagnetic on the stator end-winding of the large dry submersible motor. Firstly, the electromagnetic field which included transition state and steady state is researched by 3-D FEM. Secondly, the electromagnetic force which lead to vibrations of end-winding is calculated by numerical method, it can be obtained that where endured the largest force density along the slant part of end-winding. Finally, the radial displacement and the axial displacement of the slant part which caused by vibrations is studied, the analysis results show that the axial displacement is larger than the amplitude of radial displacement. It indicates that the slant part of end-winding will be more easily damaged at axial direction than radial direction.

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Lysosome Specific Platinum(II) Catecholates with Photoactive BODIPY for Imaging and Photodynamic Therapy in Near‐IR Light

European Journal of Inorganic Chemistry ◽

10.1002/ejic.202001146 ◽

2021 ◽

Vol 2021 (9) ◽

pp. 831-839

Author(s):

Vanitha Ramu ◽

Paramita Kundu ◽

Aarti Upadhyay ◽

Paturu Kondaiah ◽

Akhil R. Chakravarty

Keyword(s):

Photodynamic Therapy ◽

Near Ir ◽

Ir Light

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The Highly Uniform Photoresponsivity from Visible to Near IR Light in Sb2Te3 Flakes

Sensors ◽

10.3390/s21041535 ◽

2021 ◽

Vol 21 (4) ◽

pp. 1535

Author(s):

Shiu-Ming Huang ◽

Jai-Lung Hung ◽

Mitch Chou ◽

Chi-Yang Chen ◽

Fang-Chen Liu ◽

...

Keyword(s):

Band Structure ◽

Energy Difference ◽

Experimental Result ◽

Light Illumination ◽

Near Ir ◽

State Band ◽

Valence Bands ◽

Low Dimensional ◽

Low Dimensional Materials ◽

Ir Light

Broadband photosensors have been widely studied in various kinds of materials. Experimental results have revealed strong wavelength-dependent photoresponses in all previous reports. This limits the potential application of broadband photosensors. Therefore, finding a wavelength-insensitive photosensor is imperative in this application. Photocurrent measurements were performed in Sb2Te3 flakes at various wavelengths ranging from visible to near IR light. The measured photocurrent change was insensitive to wavelengths from 300 to 1000 nm. The observed wavelength response deviation was lower than that in all previous reports. Our results show that the corresponding energies of these photocurrent peaks are consistent with the energy difference of the density of state peaks between conduction and valence bands. This suggests that the observed photocurrent originates from these band structure peak transitions under light illumination. Contrary to the most common explanation that observed broadband photocurrent carrier is mainly from the surface state in low-dimensional materials, our experimental result suggests that bulk state band structure is the main source of the observed photocurrent and dominates the broadband photocurrent.

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Hybrid Waveguides: Guided Mid‐IR and Near‐IR Light within a Hybrid Hyperbolic‐Material/Silicon Waveguide Heterostructure (Adv. Mater. 11/2021)

Advanced Materials ◽

10.1002/adma.202170079 ◽

2021 ◽

Vol 33 (11) ◽

pp. 2170079

Author(s):

Mingze He ◽

Sami I. Halimi ◽

Thomas G. Folland ◽

Sai S. Sunku ◽

Song Liu ◽

...

Keyword(s):

Silicon Waveguide ◽

Near Ir ◽

Ir Light

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Estimation of electric field force density in water-treed XLPE insulation under variable frequency AC Voltage

2021 International Symposium on Devices, Circuits and Systems (ISDCS) ◽

10.1109/isdcs52006.2021.9397906 ◽

2021 ◽

Author(s):

Priya Selvamany ◽

Gowri Sree Varadarajan

Keyword(s):

Electric Field ◽

Force Density ◽

Variable Frequency ◽

Field Force ◽

Electric Field Force ◽

Xlpe Insulation

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Design, Analysis and Test of a Hyperbolic Magnetic Field Voice Coil Actuator for Magnetic Levitation Fine Positioning Stage

Energies ◽

10.3390/en12101830 ◽

2019 ◽

Vol 12 (10) ◽

pp. 1830

Author(s):

Yiheng Zhou ◽

Baoquan Kou ◽

He Zhang ◽

Lu Zhang ◽

Likun Wang

Keyword(s):

Magnetic Field ◽

High Precision ◽

Magnetic Levitation ◽

Structural Parameters ◽

Industrial Applications ◽

Degree Of Freedom ◽

Force Density ◽

Precision Positioning ◽

Element Analysis ◽

Voice Coil Actuator

The multi-degree-of-freedom high-precision positioning system (MHPS) is one of the key technologies in many advanced industrial applications. In this paper, a novel hyperbolic magnetic field voice coil actuator using a rhombus magnet array (HMF-VCA) for MHPS is proposed. Benefiting from the especially designed rhombus magnet array, the proposed HMF-VCA has the advantage of excellent force uniformity, which makes it suitable for multi-degree-of-freedom high-precision positioning applications. First, the basic structure and operation principles of the HMF-VCA are presented. Second, the six-degree-of-freedom force and torque characteristic of the HMF-VCA is studied by three-dimensional finite element analysis (3-D FEA). Third, the influence of structural parameters on force density and force uniformity is investigated, which is conducive to the design and optimization of the HMF-VCA. Finally, a prototype is constructed, and the comparison between the HMF-VCA and conventional VCAs proves the advantage of the proposed topology.

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