Academic literature on the topic 'Photochromism'

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Journal articles on the topic "Photochromism"

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Sun, Feng Xia, Sha Sha Wei, and Shou Zhi Pu. "Synthesis and Properties of 1-(2-methyl-5-chlorine-3-thienyl)-2-(2-ethyl-benzofuran-3-Yl) perfluorocyclopentene and Application." Advanced Materials Research 830 (October 2013): 274–77. http://dx.doi.org/10.4028/www.scientific.net/amr.830.274.

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A novel unsymmetrical photochromic diarylethene, 1-(2-methyl-5-chlor-ine-3-thienyl)-2-(2-ethyl-benzofuran-3-yl) perfluorocyclopentene (1a), was synthesized and its photochromism and photo-induced anisotropy was investigated. Specifically, photochromism in solution and in PMMA amorphous films were studied. The diarylethene showed exhibited reversible photochromism, changing from colorless to red after irradiation with UV light both in solution and in PMMA amorphous film. This new photochromic system also exhibited remarkable optical storage character.
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Xu, Hong Yan, Ren Jie Wang, and Shou Zhi Pu. "A Photochromic Diarylethene Bearing a Six-Membered Aryl Unit." Applied Mechanics and Materials 473 (December 2013): 93–96. http://dx.doi.org/10.4028/www.scientific.net/amm.473.93.

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A new unsymmetrical photochromic diarylethene compound1awas synthesized and its photochromism were investigated, such as photochromism and kinetics in solution. The compound exhibited good photochromism in solution with alternating irradiation by UV/Vis light, and the maxima absorption of its closed-ring isomer1bare 515nm. The open-ring isomer of the diarylethene1aexhibited relatively strong fluorescence at 424 nm when excited at 280 nm. Its fluorescence intensity decreased along with the photochromism from open-ring isomers to closed-ring isomers upon irradiation with 297 nm UV light.
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Zhao, Jianzhang, Bing Zhao, Weiqing Xu, and Juzheng Liu. "Direct Measurement of the Photochromism Kinetics of Salicylideneamines in Solid State." Journal of Chemical Research 2003, no. 5 (2003): 292–93. http://dx.doi.org/10.3184/030823403103173859.

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A method for the study of photochromism kinetics of salicylideneamines in the solid state with fluorescence changes as the probe was described. This can be used to quantitatively evaluate the photochromism of some solid photochromic materials.
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Rawat, M. S. M., Sudagar Mal, and Pramod Singh. "Photochromism in Anils - A Review." Open Chemistry Journal 2, no. 1 (2015): 7–19. http://dx.doi.org/10.2174/1874842201502010007.

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This review describes in brief the historical perspective of photochromism and photochromic behaviour of ‘Anils’. This phenomenon among ‘Anils’ is exhibited due to the tautomerism between enol and keto form via six membered hydrogen transfer between the phenolic hydrogen and imine nitrogen and show the phenomenon of solid-state photochromism and thermochromism and photochromism in rigid glassy solutions as well. Photochromic property in ‘Anils’ is a characteristic of the molecule, but their chromo behaviour is not only influenced by the crystal structure of anils but also by the substituents i
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Xu, Hong Yan, Hai Chang Ding, and Shou Zhi Pu. "Synthesis, Photochromism and Optical Storage of a Novel Diarylethene Compound." Advanced Materials Research 830 (October 2013): 294–97. http://dx.doi.org/10.4028/www.scientific.net/amr.830.294.

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A new unsymmetrical photochromic diarylethene 1a was synthesized and its photochromism were investigated. The compound exhibited good photochromism in solution with alternating irradiation by UV/Vis light, and the maxima absorption of its closed-ring isomer is 542 nm. The open-ring isomer exhibited relatively strong fluorescence at 420 nm. Its fluorescence intensity decreased along with the photochromism from open-ring isomer to closed-ring isomer upon irradiation with UV light.
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Liu, Hong Liang, Hong Jing Jia, and Shou Zhi Pu. "Synthesis and Property of 1-(2,4-dimethoxyl-5-pyrimidinyl)-2-[2-methyl-5-(2-fluorophenyl)-3-thienyl]perfluorocyclopentene." Applied Mechanics and Materials 468 (November 2013): 91–94. http://dx.doi.org/10.4028/www.scientific.net/amm.468.91.

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A novel photochromic diarylethene based on pyrimidine moiety was synthesized. Its properties, including photochromism and fluorescence were investigated in detail. The compound exhibited remarkable photochromism, changing from colorless to red after irradiation with UV light. The fluorescence had a remarkable initial increase with subsequent dramatic decrease with increasing concentration. The results indicated that the pyrimidine moiety played a very important role during the process of photochromic reaction for the diarylethene derivative.
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Liao, Guan Ming, Dan Dan Xue, Chun Hong Zheng, and Shou Zhi Pu. "Research on Photochromic Materials with Synthesis and Properties of 1-(3,5-Dimethyl-4-isoxazolyl)-2-[2-methyl-5-(p-ethoxyphenyl)-3-thienyl]perfluorocyclopentene." Advanced Materials Research 1003 (July 2014): 27–30. http://dx.doi.org/10.4028/www.scientific.net/amr.1003.27.

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An asymmetrical photochromic diarylethene 1-(3,5-Dimethyl-4-isoxazolyl)-2-[2-methyl-5-(p-ethoxyphenyl)-3-thienyl] perfluorocyclopentene (1o) was synthesized and its photochromic properties were investigated. Upon irradiation with 297 nm UV light, 1o exhibited photochromism in hexane solution. The kinetic experiments showed that the cyclization and cycloreversion processes were zeroth and first order reaction, respectively. Moreover, diarylethene 1o also exhibited obviously fluorescence switches along with the photochromism.
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Liu, Ming, Wei Li, Shou Zhi Pu, Gang Liu, and Shi Qiang Cui. "Synthesis, Properties and Application in Optical Memory of a New Photochromic Diarylethene." Key Engineering Materials 474-476 (April 2011): 1259–62. http://dx.doi.org/10.4028/www.scientific.net/kem.474-476.1259.

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A new photochromic diarylethene compound, 1-[2-methyl-3-benzothiophene]-2- [5-(3-chlorobenzene)-2-methyl-3-thienyl]perfluorocyclopentene(1a), was synthesized and its photochromism and photo-induced anisotropy was investigated. It showed good photochromism and functioned as an effective fluorescent photoswitch in solution. In hexane, the open-ring isomer of the diarylethene 1a exhibited relatively strong fluorescence at 417 nm when excited at 315 nm. In PMMA film, diarylethene 1a also showed good photochromism.
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Xue, Ya Ming, Feng Xia Sun, and Shou Zhi Pu. "Materials with Synthesis and Properties of Photochromic Diarylethene." Applied Mechanics and Materials 473 (December 2013): 89–92. http://dx.doi.org/10.4028/www.scientific.net/amm.473.89.

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An unsymmetrical photochromic diarylethene was synthesized and its photochromism properties were investigated in detail. The compound exhibited remarkable photochromism, changing from colorless to light pink after irradiation with 297 nm UV light, in which absorption maxima were observed at 498 nm in hexane and at 505 nm in PMMA amorphous films, respectively. The photochromic reaction kinetics was studied in solution and their cyclization/cycloreversion processes belong to zeroth/first order reaction in hexane.
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Tian, Zhao Yan, Shi Qiang Cui, and Shou Zhi Pu. "Synthesis, Photochromism and Fluorescent Switch of 1-(2-Methyl-1-Benzofuran-3-Yl)-2-(2-Methyl-5-(4-Benzylazide)-3-Thienyl)Perfluorocyclopentene." Applied Mechanics and Materials 662 (October 2014): 107–10. http://dx.doi.org/10.4028/www.scientific.net/amm.662.107.

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A photochromic diarylethene of 1-(2-methyl-1-benzofuran-3-yl)-2-(2-methyl-5-(4-benzylazide)-3-thienyl)) perfluorocyclopentene was synthesized and its properties such as photochromism and fluorescence in solution were investigated in detail. The diarylethene has shown good photochromic behavior in solution with alternating irradiation by UV/vis light. Its fluorescence intensity decreased along with the photochromism from open-ring isomers to closed-ring isomers upon irradiation with 297 nm UV light.
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Dissertations / Theses on the topic "Photochromism"

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Sadrai, Mahin. "An exploration of triarylmethane leucohydroxides and triarylmethane leucobisulfites as potential useful dyes for practical photochromism /." Online version of thesis, 1986. http://hdl.handle.net/1850/9669.

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Koppetsch, Karsten J. "Photodegradation of organic photochromic dyes incorporated in ormosil matrices." Link to electronic thesis, 2000. http://www.wpi.edu/Pubs/ETD/Available/etd-0509100-092225/.

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Yang, Yuheng. "Study on novel photochromic systems based on chromophores with six-membered ring as central ethene bridge." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2012. http://tel.archives-ouvertes.fr/tel-00846636.

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A series of photochromic bisthienylethenes (BTE) chromophores with different central ethene bridges were synthesized. Up to date, the rational design of BTE have been mainly carried out on the side aryl groups. In our work, the influence of the aromaticity of the central ethene bridge on the photochromic properties was studied. Moreover, unlike in the literature where most of BTE have a five-membered ring bridge, six-membered ring bridges were used. In Chapter 1, examples of photochromes are given, along with the main definitions. Chapter 2 deals with BTTE, a BTE with a benzobisthiadiazole bri
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Harris, S. A. "Photochromism in heteroaromatic fulgides." Thesis, Cardiff University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370791.

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Massaad, Julie. "Photo-modulations vs gated photochromism in a dithienylethene dye." Toulouse 3, 2012. http://thesesups.ups-tlse.fr/1863/.

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"L'objectif de cette thèse est l'étude de la photo-modulation et du " gated photochromism " d'un diacide dithienyléthène ayant une structure minimale très simple, dans différents milieux. Ces deux comportements proviennent de la combinaison de l'isomérisation photochimique et d'une réaction chimique associée impliquant un ou les deux photo-isomères. Tout d'abord, l'étude de la photo-modulation et du " gated photochromism " du diacide a été réalisée en présence de différentes quantités d'une base, l'hydroxyde de tétrabutylammonium, dans un mélange acétonitrile / eau. La méthode de modélisation
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Hobley, Jonathan. "Photochromism of naphthoxazine-spiro-indolines." Thesis, Loughborough University, 1995. https://dspace.lboro.ac.uk/2134/33254.

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Naphthoxazine-spiro-indolines (NOSIs) can exist in a colourless and a coloured form. These compounds can interconvert between these two forms either photochemically or thermally and are resilient to degradation even after repeated cycles of colouration and bleaching. Absorption spectra of both the stable colourless form and the energetically less stable coloured form have been measured. Several NOSI compounds have been shown to photoconvert to the coloured form with an efficiency of between 0.06–0.74, depending upon the compound conditions under which the conversion is brought about. The facto
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Robinson, M. T. "A study of hydrogen-transfer photochromism." Thesis, Nottingham Trent University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383670.

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Garmshausen, Yves. "Photochromism of Arylazotetracyanocyclopentadienides and Excited State Activation Barriers of Dihydropyrene Switches." Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/21289.

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Für Dihydropyrene ist die 6 pi Elektrozyklisierung für gewöhnlich schnell, wohingegen die Cycloreversion durch eine Aktivierungsbarriere im angeregten Zustand ineffizient wird. Die Substitution mit Donor- und Akzeptorgruppen erzeugt ein „push-pull“ System, welches eine bathochrome Verschiebung der Absorption in den tief roten Bereich (730 nm onset) zur Folge hat. Das „push-pull” System polarisiert den Dihydropyrenkern, was ein Absenken der Aktivierungsbarriere im angeregten Zustand zur Folge hat und in einer erhöhten Quantenausbeute resultiert. Es wird weiter gezeigt, wie dies in nicht-permane
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Gadan, Sophie. "Nouveaux photochromes de la famille des (ter/tétra)arylènes intrinsèquement chiraux et redox actifs." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASF022.

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Le photochromisme est le processus par lequel une espèce chimique subit une transformation réversible photo-induite entre deux états ayant des spectres d'absorption différents. Cette isomérisation peut être réversible thermiquement et/ou photochimiquement. Les applications potentielles du photochromisme sont nombreuses dans différents domaines car, outre la couleur, le changement structural entre les deux états permet aussi de contrôler une myriade d'autres propriétés et fonctions. Parmi différentes familles de photochromes organiques connues, les diaryléthènes ont été au centre de très nombre
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Kushnir, Oleg. "Molecular switches based on dihydroazulene-vinylheptafulvene photochromism." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=976115832.

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Books on the topic "Photochromism"

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1948-, Glebov L. B., and T͡S︡ekhomskii Viktor Alekseevich, eds. Physics and chemistry of photochromic glasses. CRC Press, 1998.

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Irie, Masahiro, Yasushi Yokoyama, and Takahiro Seki, eds. New Frontiers in Photochromism. Springer Japan, 2013. http://dx.doi.org/10.1007/978-4-431-54291-9.

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Heinz, Dürr, and Bouas-Laurent Henri, eds. Photochromism: Molecules and systems. Elsevier, 1990.

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Irie, Masahiro. New Frontiers in Photochromism. Springer Japan, 2013.

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Heinz, Dürr, and Bouas-Laurent Henri, eds. Photochromism: Molecules and systems. Elsevier, 2003.

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Lambert, Brian W. Ring-opening of spirobichromenes. University College Dublin, 1996.

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Crano, John C., and Robert J. Guglielmetti. Physiochemical studies, biological applications, and thermochromism. Kluwer Academic/Plenum Publishers, 2002.

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Kni͡azhanskiĭ, M. I. Fotoinit͡siirovannye prot͡sessy v molekulakh azometinov i ikh strukturnykh analogov. Izd-vo Rostovskogo universiteta, 1992.

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Lewanowicz, Aleksandra. Fotoaktywność układów organicznych: Fotochromizm i fotoluminescencja 1,4-dihydropirydyn i zasad Schiffa. Oficyna Wydawnicza Politechniki Wrocławskiej, 2007.

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United States. National Aeronautics and Space Administration., ed. Optical logarithmic transformation of speckle images with bacteriorhodopsin films. National Aeronautics and Space Administration, 1995.

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Book chapters on the topic "Photochromism"

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Abe, Jiro, Hiroaki Yamashita, and Katsuya Mutoh. "Photochromism." In Encyclopedia of Polymeric Nanomaterials. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36199-9_119-1.

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Dessauer, R., and J. P. Paris. "Photochromism." In Advances in Photochemistry. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470133316.ch8.

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Abe, Jiro, Hiroaki Yamashita, and Katsuya Mutoh. "Photochromism." In Encyclopedia of Polymeric Nanomaterials. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-29648-2_119.

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Kobatake, Seiya. "Photochromism." In Progress in the Science of Functional Dyes. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4392-4_7.

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Towns, Andrew D. "Industrial Photochromism." In Lecture Notes in Chemistry. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31671-0_5.

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Abe, Jiro, Yoichi Kobayashi, and Katsuya Mutoh. "Stepwise Two-Photon Photochromism." In Photosynergetic Responses in Molecules and Molecular Aggregates. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5451-3_4.

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Irie, Masahiro. "Photomechanical Response of Diarylethene Single Crystals." In New Frontiers in Photochromism. Springer Japan, 2013. http://dx.doi.org/10.1007/978-4-431-54291-9_1.

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Nakashima, Takuya, and Tsuyoshi Kawai. "Photochromic Terarylenes." In New Frontiers in Photochromism. Springer Japan, 2013. http://dx.doi.org/10.1007/978-4-431-54291-9_10.

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Koike, Takashi, and Munetaka Akita. "Photochromic Organometallics: Redox-Active Iron and Ruthenium Complexes with Photochromic DTE Ligand." In New Frontiers in Photochromism. Springer Japan, 2013. http://dx.doi.org/10.1007/978-4-431-54291-9_11.

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Ishibashi, Yukihide, Tetsuro Katayama, and Hiroshi Miyasaka. "Ultrafast Dynamics and Mechanisms of One-Photon and Multiphoton Photochromic Reactions." In New Frontiers in Photochromism. Springer Japan, 2013. http://dx.doi.org/10.1007/978-4-431-54291-9_12.

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Conference papers on the topic "Photochromism"

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Chen, Anyin, Shouzhi Pu, Zhanggao Le, and Gang Liu. "Synthesis, Photochromism and Photoinduced Anisotropy of a New Photochromic Diarylethene." In 2009 Pacific-Asia Conference on Circuits, Communications and Systems (PACCS). IEEE, 2009. http://dx.doi.org/10.1109/paccs.2009.83.

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Kawamoto, Yuki, Naoki Inoue, Yuto Ito, et al. "Clarification of Fuel and Oil Flow Behaviour Around the Piston Rings of Internal Combustion Engines: Visualization of Oil and Fuel Behaviour by Photochromism in Gasoline Engine Under Transient Operating Conditions." In 2023 JSAE/SAE Powertrains, Energy and Lubricants International Meeting. Society of Automotive Engineers of Japan, 2023. http://dx.doi.org/10.4271/2023-32-0046.

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<div class="section abstract"><div class="htmlview paragraph">Photochromism is a reversible color change phenomenon based on chemical reactions caused by light illumination. In the present study, this technique is applied to visualize the lubricating oil and fuel around the piston rings in the gasoline engine. The oil film was colored with a UV laser and photographed by synchronizing the shutter of a high-speed camera with a flashlight. The color density was evaluated as a value of absorbance, calculated from images taken at two different wavelengths and two different times before
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Borowiec, Mieczyslaw T., Andrzej Majchrowski, Henryk Szymczak, Jozef Zmija, and Miroslaw Zaleski. "Photochromism of mixed sillenites." In International Conference on Solid State Crystals '98, edited by Andrzej Majchrowski and Jerzy Zielinski. SPIE, 1999. http://dx.doi.org/10.1117/12.343001.

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Liu, Gang, Shouzhi Pu, Congbin Fan, and Weijun Liu. "Synthesis, photochromism, and holographic optical recording of photochromic diarylethene bearing fluorine atoms." In Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, edited by Fuxi Gan. SPIE, 2008. http://dx.doi.org/10.1117/12.822473.

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Li, Xiaochuan, Sheng Wang, and He Tian. "Photochromism of a diarylethene dimer." In Seventh International Symposium on Optical Storage (ISOS 2005), edited by Fuxi Gan and Lisong Hou. SPIE, 2005. http://dx.doi.org/10.1117/12.649672.

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Majumder, Apratim, Precious Cantu, Farhana Masid, Trisha L. Andrew, and Rajesh Menon. "Exploiting photochromism for optical nanopatterning." In Digital Holography and Three-Dimensional Imaging. OSA, 2014. http://dx.doi.org/10.1364/dh.2014.dw1b.4.

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Liu, Hongliang, Shouzhi Pu, Shiqiang Cui, and Gang Liu. "Photochromism and Optical Recording of a Novel Photochromic Diarylethene Bearing Thiazole and Biphenyl Unit." In 2011 Symposium on Photonics and Optoelectronics (SOPO 2011). IEEE, 2011. http://dx.doi.org/10.1109/sopo.2011.5780557.

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Zhang, Guangjin, and Jiannian Yao. "Photochromism of inorganic/organic ultrathin films." In Photonics Asia 2004, edited by Duanyi Xu, Kees A. Schouhamer Immink, and Keiji Shono. SPIE, 2005. http://dx.doi.org/10.1117/12.572492.

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Liu, Gang, Shouzhi Pu, and Congbin Fan. "Efficient synthesis, photochromism, and holographic optical recording of a photochromic diarylethene bearing a pyrrole unit." In Photonics and Optoelectronics Meetings 2009, edited by Masud Mansuripur, Changsheng Xie, and Xiangshui Miao. SPIE, 2009. http://dx.doi.org/10.1117/12.843328.

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Mihara, Yuji, Yuya Hirose, Masakuni Oikawa, et al. "Clarification of Fuel and Oil Flow Behavior Around the Piston Rings of Internal Combustion Engines." In 2023 JSAE/SAE Powertrains, Energy and Lubricants International Meeting. Society of Automotive Engineers of Japan, 2023. http://dx.doi.org/10.4271/2023-32-0047.

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<div class="section abstract"><div class="htmlview paragraph">The mechanism of lubricant dilution by post injection fuel in a diesel engine was investigated. The operating conditions of the engine were changed, and oil was sampled from each part of the piston and the crankcase, and the dilution ratio was analyzed. Also, photochromism was used to visualize the oil and fuel flow. Dilution ratios obtained from oil sampling and photochromism showed the same tendency.</div></div>
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Reports on the topic "Photochromism"

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Pollagi, T. P., M. B. Sinclair, and S. J. Jacobs. Final report: Photochromism as a switching mechanism for electronically active organic materials. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/505264.

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Davis, Jeffrey A., and Mary Thomas. Photochromic Materials Study. Defense Technical Information Center, 1985. http://dx.doi.org/10.21236/ada163140.

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Cherepy, N., and R. Sanner. Synthesis and Optical Properties of Photochromic Perinaphthothioindigo. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/15016022.

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Chaiken, Joseph. Improved Materials for Photochromic Optical Memory Subsystem (POMS). Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada378152.

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Davis, Jeffrey A., and Richard L. Lee. Study of Photochromic Materials for Use in Optical Signal Processing. Defense Technical Information Center, 1987. http://dx.doi.org/10.21236/ada189068.

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BURNS, ALAN R., DARRYL Y. SASAKI, R. W. CARPICK, JOHN A. SHELNUTT, and C. JEFFREY BRINKER. Functional Materials for Microsystems: Smart Self-Assembled Photochromic Films: Final Report. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/789579.

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Goddard, J. D. Non-Invasive Photochromic-Tracer Studies of Particulate Suspensions and Granular Media. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada329666.

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Cozzens, Robert F. Analysis and Evaluation of Technical Data on the Photochromic and Non-Linear Optical Properties of Materials. Defense Technical Information Center, 1990. http://dx.doi.org/10.21236/ada223855.

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