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Journal articles on the topic 'Photo switch'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 May 2024

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1

KJ, Sinu, and G. Ranganathan. "A Photo Voltaic Source Fed Novel Boosting Switched Z-Source Multilevel Inverter." Indonesian Journal of Electrical Engineering and Computer Science 9, no. 1 (2018): 20. http://dx.doi.org/10.11591/ijeecs.v9.i1.pp20-23.

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<p>This paper presents a new switched z-source multilevel inverter powered from a photovoltaic source. Addition of a power electronic switch in conventional z-source network provides excellent voltage boosting capability with moderate power rating which makes it suitable for low voltage photo voltaic applications. Proposed topology consists of single dc source, six power switches, two diodes, four capacitors and two inductors comparing to conventional five level schemes proposed topology contains less number of switches and passive elements. This scheme produces voltage waveform with les

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2

Zhang, Li Jun, and Man Zhang. "Design and Implementation of Digital Photo Frame Based on STM32F103VET6." Advanced Materials Research 926-930 (May 2014): 448–51. http://dx.doi.org/10.4028/www.scientific.net/amr.926-930.448.

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This paper used STM32F103VET6 as the core processor, SD card to store the image file. In addition, the host controller read, write, operate and decode the image data stored in the SD card with the SPI communication mode. Then it will send the processed data to the indication controller. And finally display the photos with TFT-LCD. The function keys send interruption requests to the processor by external interrupting. With different interrupt handler, the processor can show and switch images in the digital photo frame in different ways so as to realize the various functions of the digital photo

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3

Ijaz, Talha, Xin Zhang, Xiaorui Chen, et al. "Supramolecular Self-Assembly and Photo-Induced Transition of a Halogenated Azo-Benzene Molecule on Au(111) Surface." Crystals 13, no. 3 (2023): 404. http://dx.doi.org/10.3390/cryst13030404.

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Azobenzene derivatives are a unique class of photo-switch molecules with promising potential for nanoscale optical applications. We have studied the self-assembly and photo-induced mechanical switching of azobenzene derivatives on Au(111) at the single-molecule level by using scanning tunneling microscope (STM). 4,4′-Dibromo-azobenzene (Br-AB) molecules are assembled into two types of well-ordered structures on Au(111) surfaces in the trans-isomer configuration. Br-AB molecules experienced configurational changes from trans-to-cis photo-isomerization upon the exposure to the UV light. This pho

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4

Graham, Chris, Russell Gwilliam, and Alwyn Seeds. "Nitrogen ion implanted InP based photo-switch." Optics Express 20, no. 24 (2012): 26696. http://dx.doi.org/10.1364/oe.20.026696.

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5

Yassar, A., N. Rebiére-Galy, M. Frigoli, C. Moustrou, A. Samat, and R. Guglielmetti. "Molecular photo switch based on photochromic oligothiophenes." Synthetic Metals 121, no. 1-3 (2001): 1463–64. http://dx.doi.org/10.1016/s0379-6779(00)00809-2.

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6

Cobo, Saioa, Frédéric Lafolet, Eric Saint-Aman, et al. "Reactivity of a pyridinium-substituted dimethyldihydropyrene switch under aerobic conditions: self-sensitized photo-oxygenation and thermal release of singlet oxygen." Chemical Communications 51, no. 73 (2015): 13886–89. http://dx.doi.org/10.1039/c5cc04763c.

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7

Kargar-Estahbanaty, Arash, Mostafa Baghani, and Nasser Arbabi. "Developing an analytical solution for photo-sensitive hydrogel bilayers." Journal of Intelligent Material Systems and Structures 29, no. 9 (2018): 1953–63. http://dx.doi.org/10.1177/1045389x18754353.

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In this article, a new conceptual design of light-sensitive switches made of a soft bilayer is introduced. The bilayer structure consists of a photothermal-sensitive hydrogel strip attached to another neutral incompressible elastomeric layer. The bilayer is assumed to be initially flat under a uniform light irradiation. Decreasing the light intensity causes the bilayer to bend due to the inhomogeneous swelling of hydrogel layer and results in the switch actuation. To enlighten the actuation mechanism and investigate the influence of various parameters on the switch’s photomechanical response,

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8

Shepherd, Nicholas D., Harrison S. Moore, Jonathon E. Beves, and Deanna M. D’Alessandro. "Electrochemical Switching of First-Generation Donor-Acceptor Stenhouse Adducts (DASAs): An Alternative Stimulus for Triene Cyclisation." Chemistry 3, no. 3 (2021): 728–33. http://dx.doi.org/10.3390/chemistry3030051.

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Donor-acceptor Stenhouse adducts (DASAs) are a photo-switch class that undergoes triene cyclisation in response to visible light. Herein, electrochemical oxidation is demonstrated as an effective alternative stimulus for the triene cyclisation commonly associated with photo-switching.

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9

Yin, Yanling, Jing Ling, Liushun Wang, et al. "Competition of Photo-Excitation and Photo-Desorption Induced Positive and Negative Photoconductivity Switch in Te Nanowires." Nanomaterials 12, no. 21 (2022): 3747. http://dx.doi.org/10.3390/nano12213747.

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The photocurrent in tellurium nanowire (Te NW) exhibits a subtle influence by many extrinsic factors. Herein, we fabricate Te NW devices and explore their photoresponse properties in detail. It is observed that the current increases greatly at low environmental relative humidity (RH) under light illumination, demonstrating an evident positive photoconductivity (PPC). However, the photocurrent reduces at high RH, yielding a typical negative photoconductivity (NPC). In addition, when exposed to a proper relative humidity, Te NW devices show PPC immediately and then transfer to NPC gradually unde

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10

Yang, Yang, Fusheng Ma, Zhen Li, Juan Qiao, Yen Wei, and Yan Ji. "Enabling the sunlight driven response of thermally induced shape memory polymers by rewritable CH3NH3PbI3 perovskite coating." Journal of Materials Chemistry A 5, no. 16 (2017): 7285–90. http://dx.doi.org/10.1039/c7ta01474k.

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(CH<sub>3</sub>NH<sub>3</sub>)PbI<sub>3</sub> perovskite coating not only makes normal widely used thermal responsive shape memory polymers (SMPs) responsive to direct sunlight due to the strong photo-thermal effect of the coating, but also allows the material to be able to flexibly switch between photo-sensitive and photo-inert states by erasing and re-applying the coating.

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11

Battula, Himabindu, Moromi Nath, Sabyashachi Mishra, and Subbalakshmi Jayanty. "Spirocyclic rhodamine B benzoisothiazole derivative: a multi-stimuli fluorescent switch manifesting ethanol-responsiveness, photo responsiveness, and acidochromism." RSC Advances 13, no. 8 (2023): 5134–48. http://dx.doi.org/10.1039/d2ra08022b.

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12

Bakkar, Assil, Saioa Cobo, Frédéric Lafolet, Eric Saint-Aman, and Guy Royal. "A new surface-bound molecular switch based on the photochromic dimethyldihydropyrene with light-driven release of singlet oxygen properties." Journal of Materials Chemistry C 3, no. 46 (2015): 12014–17. http://dx.doi.org/10.1039/c5tc02900g.

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13

Pang, Juan, Xincheng Mao, Jialin Xu, Xiang Zhao, Jingyang Kong, and Xiaohong Hu. "Design, synthesis, and investigation of a visible light-driven photo-switching macromolecule." RSC Advances 10, no. 58 (2020): 35164–73. http://dx.doi.org/10.1039/d0ra06627c.

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14

Yu, Jing-Jing, Zhan-Qi Cao, Qi Zhang, Shun Yang, Da-Hui Qu, and He Tian. "Photo-powered stretchable nano-containers based on well-defined vesicles formed by an overcrowded alkene switch." Chemical Communications 52, no. 81 (2016): 12056–59. http://dx.doi.org/10.1039/c6cc06458b.

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15

Hino, Takami, Tsuyoshi Hasegawa, Hirofumi Tanaka, Tohru Tsuruoka, Takuji Ogawa, and Masakazu Aono. "Influence of Atmosphere on Photo-Assisted Atomic Switch Operations." Key Engineering Materials 596 (December 2013): 116–20. http://dx.doi.org/10.4028/www.scientific.net/kem.596.116.

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We conducted light irradiation experiments in air to clarify influence of atmosphere on the operation of a photo-assisted atomic switch. In air, Pt-Ag2S/Ag nanogap electrodes with a PTCDI thin layer in their nanogaps showed current fluctuations with an applied bias of from 1.5 V to 6 V regardless of the bias polarity and with or without light irradiation. This is in contrast to the fact that only two things cause an increase in current that result in the formation of a silver bridge and switching behavior under vacuum, namely, light irradiation and the application of positive bias to the Ag2S/

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16

Öngel, Banu, Jörg M. Neudörfl та Axel G. Griesbeck. "(E)-1-(3,4-Dimethoxyphenyl)-2-methyl-3-phenylprop-2-en-1-one: A P-Type Acid-Stable Photochromic α-Methylchalcone". Molbank 2021, № 2 (2021): M1226. http://dx.doi.org/10.3390/m1226.

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The α-methylated chalcone 3 with an electron-donor substituted A-aryl ring and an unsubstituted B-phenyl ring was synthesized by base-catalyzed aldehyde/acetophenone condensation. Compound 3 can be photo-switched from E→Z by irradiation with long-wavelength light λ > 350 nm, whereas irradiation with shorter wavelengths leads to photo-stationary states (PSS) with lower amounts of the Z-isomer. The limiting wavelength for fully equilibrated E⮀Z (PSS = 1) can be achieved around 240 nm. The stability of both E- and Z-isomers at the wavelength-dependent PSS under UV-irradiation between 250 and 3

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17

Feng, Qi, Yuanyuan Li, Guang Shi, et al. "A photo-controllable third-order nonlinear optical (NLO) switch based on a rhodamine B salicylaldehyde hydrazone metal complex." Journal of Materials Chemistry C 4, no. 36 (2016): 8552–58. http://dx.doi.org/10.1039/c6tc01549b.

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18

Das, Minati, Mongoli Brahma, Sophy A. Shimray, Francis A. S. Chipem, and G. Krishnamoorthy. "Nanoparticle and surfactant controlled switching between proton transfer and charge transfer reaction coordinates." Physical Chemistry Chemical Physics 24, no. 8 (2022): 4944–56. http://dx.doi.org/10.1039/d1cp02165f.

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19

Jia, Lichao, Hongqiang Wang, Dattatray Dhawale, et al. "Highly ordered macro-mesoporous carbon nitride film for selective detection of acidic/basic molecules." Chem. Commun. 50, no. 45 (2014): 5976–79. http://dx.doi.org/10.1039/c4cc02042a.

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20

Masante, Cédric, Martin Kah, Clément Hébert, Nicolas Rouger, and Julien Pernot. "Non‐Volatile Photo‐Switch Using a Diamond pn Junction." Advanced Electronic Materials 8, no. 1 (2021): 2100542. http://dx.doi.org/10.1002/aelm.202100542.

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21

Liu, Xinjie, Meirong Cai, Yongmin Liang, Feng Zhou, and Weimin Liu. "Photo-regulated stick-slip switch of water droplet mobility." Soft Matter 7, no. 7 (2011): 3331. http://dx.doi.org/10.1039/c0sm01144d.

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22

Lee, Wonsik, Dongjun Kim, Joonyoung Lim, et al. "Light-induced electrical switch via photo-responsive nanocomposite film." Sensors and Actuators B: Chemical 266 (August 2018): 724–29. http://dx.doi.org/10.1016/j.snb.2018.03.166.

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23

Wang, Guocui, Jianna Zhang, Bo Zhang, Ting He, Yanan He, and Jingling Shen. "Photo-excited terahertz switch based on composite metamaterial structure." Optics Communications 374 (September 2016): 64–68. http://dx.doi.org/10.1016/j.optcom.2016.04.052.

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24

Wang, Chun-Ta, Yueh-Chi Wu, and Tsung-Hsien Lin. "Photo-switchable bistable twisted nematic liquid crystal optical switch." Optics Express 21, no. 4 (2013): 4361. http://dx.doi.org/10.1364/oe.21.004361.

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25

Zhang, Rongrong, Jinmei Lei, Jiadai Xu, et al. "Bioinspired Photo-Responsive Liquid Gating Membrane." Biomimetics 7, no. 2 (2022): 47. http://dx.doi.org/10.3390/biomimetics7020047.

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Stomata in the plant leaves are channels for gas exchange between the plants and the atmosphere. The gas exchange rate can be regulated by adjusting the opening and closing of stoma under the external stimuli, which plays a vital role in plant survival. Under visible light irradiation, the stomata open for gas exchange with the surroundings, while under intense UV light irradiation, the stomata close to prevent the moisture loss of plants from excessive transpiration. Inspired by this stomatal self-protection behavior, we have constructed a bioinspired photo-responsive liquid gating membrane (

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26

Zhou, Yaowu, Rongrong Chen, Huiting Yang, et al. "Light-responsive polymersomes with a charge-switch for targeted drug delivery." Journal of Materials Chemistry B 8, no. 4 (2020): 727–35. http://dx.doi.org/10.1039/c9tb02411e.

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27

Cavaliere, F., A. Mennella, M. Zannoni, et al. "QUBIC VII: The feedhorn-switch system of the technological demonstrator." Journal of Cosmology and Astroparticle Physics 2022, no. 04 (2022): 040. http://dx.doi.org/10.1088/1475-7516/2022/04/040.

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Abstract We present the design, manufacturing and performance of the horn-switch system developed for the technological demonstrator of QUBIC (the Q&U Bolometric Interferometer for Cosmology). This system consists of 64 back-to-back dual-band (150 GHz and 220 GHz) corrugated feed-horns interposed with mechanical switches used to select desired baselines during the instrument self-calibration. We manufactured the horns in aluminum platelets milled by photo-chemical etching and mechanically tightened with screws. The switches are based on steel blades that open and close the waveguide betwee

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28

Wang, Ren Jie, Pan Pan Ren, and Gang Liu. "Synthesis, Photochromism and Application of a Photochromic Diarylethene with a Pyridine Unit." Advanced Materials Research 830 (October 2013): 282–85. http://dx.doi.org/10.4028/www.scientific.net/amr.830.282.

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A new unsymmetrical photochromic diarylethene compound 1-[(2-methyl-5-(2-pyridyl)-3-thienyl)]-2-{2-methyl-5-[2-(1,3-dioxolane)]-3-thienyl} perfluorocyclopentene1Owas synthesized. The optoelectronic properties, including photochromism, fluorescences switch and optical recording were investigated in both solution and a PMMA amorphous film. This compound exhibited good photochromism, changing from colorless to purple after irradiation with 297 nm UV light. The new diarylethene also showed remarkable fluorescence switches by photoirradiation in hexane solution. Finally, photo-mode rewritable optic

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29

Cobo, Saioa, Frédéric Lafolet, Eric Saint-Aman, et al. "Correction: Reactivity of a pyridinium-substituted dimethyldihydropyrene switch under aerobic conditions: self-sensitized photo-oxygenation and thermal release of singlet oxygen." Chemical Communications 51, no. 78 (2015): 14682. http://dx.doi.org/10.1039/c5cc90403j.

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Correction for ‘Reactivity of a pyridinium-substituted dimethyldihydropyrene switch under aerobic conditions: self-sensitized photo-oxygenation and thermal release of singlet oxygen’ by Saioa Cobo et al., Chem. Commun., 2015, 51, 13886–13889.

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30

Pramanik, Bapan, and Sahnawaz Ahmed. "Peptide-Based Low Molecular Weight Photosensitive Supramolecular Gelators." Gels 8, no. 9 (2022): 533. http://dx.doi.org/10.3390/gels8090533.

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Over the last couple of decades, stimuli-responsive supramolecular gels comprising synthetic short peptides as building blocks have been explored for various biological and material applications. Though a wide range of stimuli has been tested depending on the structure of the peptides, light as a stimulus has attracted extensive attention due to its non-invasive, non-contaminant, and remotely controllable nature, precise spatial and temporal resolution, and wavelength tunability. The integration of molecular photo-switch and low-molecular-weight synthetic peptides may thus provide access to su

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31

Takayama, Yosinori, and Yasuhiro Koshimoto. "Numerical Study on Photo-thermal Driven Bi-stable Micro Switch." IEEJ Transactions on Fundamentals and Materials 126, no. 12 (2006): 1245–48. http://dx.doi.org/10.1541/ieejfms.126.1245.

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32

Bazarnik, Maciej, Leszek Jurczyszyn, Ryszard Czajka, and Karina Morgenstern. "Mechanism of a molecular photo-switch adsorbed on Si(100)." Physical Chemistry Chemical Physics 17, no. 7 (2015): 5366–71. http://dx.doi.org/10.1039/c4cp04353g.

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33

Guan, Pengli, Binsheng Yang, Jie Chai, Guangming Wen, and Bin liu. "A stable hydrazine click fluorescent probe based on photo switch." Dyes and Pigments 186 (February 2021): 108983. http://dx.doi.org/10.1016/j.dyepig.2020.108983.

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34

Sun, C. K., R. Nguyen, D. J. Albares, and C. T. Chang. "Photo-injection back-to-back PIN switch for RF control." Electronics Letters 33, no. 18 (1997): 1579. http://dx.doi.org/10.1049/el:19971044.

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35

Wang, Chun-Ta, Yueh-Chi Wu, and Tsung-Hsien Lin. "P-126: Photo-Controllable Multi-Stable Liquid Crystal Optical Switch." SID Symposium Digest of Technical Papers 45, no. 1 (2014): 1457–59. http://dx.doi.org/10.1002/j.2168-0159.2014.tb00385.x.

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36

Pang, Huan, Pingping Xu, Chonglu Li, et al. "A photo-responsive macroscopic switch constructed using a chiral azo-calix[4]arene functionalized silicon surface." Chemical Communications 54, no. 24 (2018): 2978–81. http://dx.doi.org/10.1039/c8cc01196f.

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A photo-responsive macroscopic switch was fabricated using a chiral azo-calix[4]arene derivative (FC4AD) functionalized silicon surface and exhibited selective and reversible recognition of (1R,2S)-1-amino-2-indanol through the variation of wettability.

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37

Hooker, Jordan P., Florian Feist, Laura Delafresnaye, Federica Cavalli, Leonie Barner, and Christopher Barner-Kowollik. "On-demand acid-gated fluorescence switch-on in photo-generated nanospheres." Chemical Communications 56, no. 37 (2020): 4986–89. http://dx.doi.org/10.1039/d0cc01557a.

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Polymer particles are synthesized using a photo-active ortho-methyl benzaldehyde with a terminal alkyne for cross-linking. The reactive 1,4-dihydronaphthalene at every cross-linking point undergoes aromatisation to a fluorescent naphthalene upon exposure to acid.

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38

Greitemeyer, Tobias, Simone Hengmith, and Peter Fischer. "Sex Differences in the Willingness to Betray and Switch Romantic Partners." Swiss Journal of Psychology 64, no. 4 (2005): 265–72. http://dx.doi.org/10.1024/1421-0185.64.4.265.

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The present study examined sex differences in the willingness to accept a hypothetical sexual offer by different potential partners. 95 female and male participants were asked to imagine that their current partner was of moderate socioeconomic status, with a photo of moderate physical attractiveness. For each of four partners, depicted as either being of high or moderate socioeconomic status, with a photo of either high or moderate physical attractiveness, participants reported their willingness to date, to have sexual intercourse, and to leave their current partner for the new partner. Women

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39

Brahmbhatt, Shubh, Harmish Panchal, Meet Patel, Vikas Thakkar, Prof Krupal Shah, and Prof Bharat Dogra. "Adaptive Headlights System for Four Wheelers: A Review." International Journal for Research in Applied Science and Engineering Technology 10, no. 4 (2022): 1553–59. http://dx.doi.org/10.22214/ijraset.2022.41476.

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Abstract: This paper focuses on the review of design and working of a microcontroller based Adaptive Headlight System (AHS) for automobiles. The main purpose of this system is to present a cost-effective technique to illuminate blind spots while driving in the night and during the times when the visibility is reduced significantly to make the objects visible in those darkened locations and thereby prevent accidents. The system functions in accordance to the controlled input from microcontroller unit which drives the stepper motors connected to the headlights. The system is also designed to rec

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40

Chuang, Ya-Mi, Benjamin Wenn, Sam Gielen, Anitha Ethirajan, and Thomas Junkers. "Ligand switch in photoinduced copper-mediated polymerization: synthesis of methacrylate–acrylate block copolymers." Polymer Chemistry 6, no. 36 (2015): 6488–97. http://dx.doi.org/10.1039/c5py00592b.

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The use of photo-induced copper-mediated radical polymerization (photoCMP) to synthesize mixed acrylate/methacrylate (methyl acrylate, MA and methyl methacrylate, MMA) block copolymers is investigated.

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41

Liu, Huajie, Yucheng Zhou, Yang Yang, et al. "Photo-pH Dually Modulated Fluorescence Switch Based on DNA Spatial Nanodevice." Journal of Physical Chemistry B 112, no. 22 (2008): 6893–96. http://dx.doi.org/10.1021/jp8020485.

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42

T, Ajithkumar, Karuppasamy B, Aswinkumar R, Balakannan U.K, and Nirmalkumar P. "Implementing a Single Switch DC-DC Converter for Photo Voltaic System." International Journal of Electrical and Electronics Engineering 7, no. 4 (2020): 19–22. http://dx.doi.org/10.14445/23488379/ijeee-v7i4p105.

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43

Sun, Lei, Sheng Wang, and He Tian. "Photo-controlled Electrochemical Switch Based on Photochromic Tetraazaporphyrin Containing Ferrocene Units." Chemistry Letters 36, no. 2 (2007): 250–51. http://dx.doi.org/10.1246/cl.2007.250.

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44

Lin, Xiao-Wen, Wei Hu, Xi-Kui Hu, et al. "Fast response dual-frequency liquid crystal switch with photo-patterned alignments." Optics Letters 37, no. 17 (2012): 3627. http://dx.doi.org/10.1364/ol.37.003627.

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45

Wang, Chun-Ta, Yueh-Chi Wu, and Tsung-Hsien Lin. "Photo-controllable tristable optical switch based on dye-doped liquid crystal." Dyes and Pigments 103 (April 2014): 21–24. http://dx.doi.org/10.1016/j.dyepig.2013.10.039.

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46

Gireesh Kumar, Devineni, Nagineni Venkata Sireesha, D. S. Naga Malleswara Rao, Kshatri Sainadh Singh, Prashant Chaudhary, and T. V. V. Pavan kumar. "Performance analysis of ZVS and ZCS boost converters for Solar Photo Voltaic Applications." E3S Web of Conferences 430 (2023): 01004. http://dx.doi.org/10.1051/e3sconf/202343001004.

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This paper describes a useful modulated, asymmetric full-bridge converter for sustainable solar PV applications. The suggested converter achieves zero-voltage switching (ZVS) on the main side’s power switches and reduces circulating current loss by utilizing a full-bridge architecture and an asymmetric control method. The blocking capacitor and the leakage inductance of the transformer operate in resonance to further provide the Zero Current Switching (ZCS) off for the output diode without the need for any further circuitry. Output diode reverse recovery is no longer a concern as a result. Add

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47

Algburi, Ali Qasim Hussein, and P. V. Ramana Rao. "A simplified PWM technique for PV fed Five-Level Five switch Multilevel Inverter." International Journal of Engineering & Technology 7, no. 4.24 (2018): 4. http://dx.doi.org/10.14419/ijet.v7i4.24.21761.

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Bulk electrical power generation is generated using fossil fuels which emit huge pollution which is a global constraint today. Non-conventional sources of energy are the alternative energy sources for power generation. Non-conventional sources like PV (photo-voltaic) system are used as power source now-a-days. Multi-level inverters (MLI) are dominating inverter circuits giving out voltage with less distortion eventually reducing voltage stress on switches and size of filter. This paper presents a MLI structure with five switches giving out five-level output from the inverter. PV system is used

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48

Petroffe, Gwendoline, Chao Wang, Xavier Sallenave, Gjergji Sini, Fabrice Goubard, and Sébastien Péralta. "Fast and reversible photo-responsive wettability on TiO2 based hybrid surfaces." Journal of Materials Chemistry A 3, no. 21 (2015): 11533–42. http://dx.doi.org/10.1039/c5ta01710f.

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A hybrid surface exhibiting a fast and reversible switch between hydrophobic and hydrophilic states was prepared by spin-coating a porous TiO<sub>2</sub> layer by a mixture of TiO<sub>2</sub> nanoparticles with 11-(4-phenylazo)phenoxy undecanoic acid (denoted as the AzoC11 acid).

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49

Liang, Wen-Jing, Jing-Jing Yu, Qi Zhang, Chang-Shun Ma, Zhao-Tao Shi, and Da-Hui Qu. "Photo-driven morphological transformations of supramolecular polymers actuated by an overcrowded alkene switch." Polymer Chemistry 9, no. 39 (2018): 4808–12. http://dx.doi.org/10.1039/c8py01070f.

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A novel light-responsive supramolecular polymer was actuated by an overcrowded alkene switch. transOAS-Upy could form well-defined nanospheres in chloroform, which would be transformed into worm-like assemblies after UV irradiation.

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50

Wang, Ren Jie, Gang Liu, Hong Ying Xia, and Shi Qiang Cui. "Efficient Synthesis, Photochromism and Application of a Photochromic Diarylethene Bearing a Benzene Unit." Advanced Materials Research 295-297 (July 2011): 1038–41. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.1038.

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Abstract:

A novel photochromic diarylethene bearing a six-membered aryl unit, 1-[2-methyl-5-(3-fluorophenyl)-3-thienyl]-2-(2-methoxylphenyl)perfluorocyclopentene (1o), was synthesized and its photochromic properties, fluorescence switch and optical recording were investigated in detail. This compound exhibited remarkable photochromism, changing from colorless to blue after irradiation with 297 nm UV light both in solution and in PMMA film, respectively. The new diarylethene also exhibited excellent fluorescence intensity and fluorescence switches by photoirradiation in hexane solution. Finally, photo-mo

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