S. Yamauchi, Shouta Saiki, K. Ishibashi, Akie Nakagawa, S. Hatakeyama
Nb and F co-doped anatase TiO2 layers were deposited by low pressure chemical vapor deposition (LPCVD) at pressure of 3 mtorr using titanium-tetra-iso-propoxide (TTIP), O2 and NbF5 as precursor, oxidant and dopant respectively. Resistivity beyond 100 Ωcm for undoped layer was decreased with increasing supply of the dopant and dependent on the supply ratio of O2 to TTIP and decreased to 0.2 Ωcm by the optimization. X-ray fluorescent spectroscopy showed Nb-content in the layer was decreased with the O2-supply ratio. X-ray photo-spectroscopy indicated that F substituted O-site in TiO2 by O2-supply but carbon-contamination and F missing substitution in the O-site were significantly increased by excess O2-supply. Further, it was suggested that the substituted F played an important role to reduce resistivity without significant contribution of O-vacancies. XRD spectra showed F missing substitution in the O-site degraded the crystallinity.
{"title":"Low Pressure Chemical Vapor Deposition of Nb and F Co-Doped TiO 2 Layer","authors":"S. Yamauchi, Shouta Saiki, K. Ishibashi, Akie Nakagawa, S. Hatakeyama","doi":"10.4236/JCPT.2014.42011","DOIUrl":"https://doi.org/10.4236/JCPT.2014.42011","url":null,"abstract":"Nb and F co-doped anatase TiO2 layers were deposited by low \u0000pressure chemical vapor deposition (LPCVD) at pressure of 3 mtorr using \u0000titanium-tetra-iso-propoxide (TTIP), O2 and NbF5 as precursor, \u0000oxidant and dopant respectively. Resistivity beyond 100 Ωcm for undoped layer was decreased with increasing supply of the dopant \u0000and dependent on the supply ratio of O2 to TTIP and decreased to 0.2 Ωcm by the optimization. X-ray fluorescent spectroscopy showed Nb-content \u0000in the layer was decreased with the O2-supply ratio. X-ray \u0000photo-spectroscopy indicated that F substituted O-site in TiO2 by O2-supply \u0000but carbon-contamination and F missing substitution in the O-site were \u0000significantly increased by excess O2-supply. Further, it was \u0000suggested that the substituted F played an important role to reduce resistivity \u0000without significant contribution of O-vacancies. XRD spectra showed F missing \u0000substitution in the O-site degraded the crystallinity.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"67 1","pages":"79-88"},"PeriodicalIF":0.0,"publicationDate":"2014-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70943086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. S. Nair, V. Vinila, Sheelakumari Issac, R. Jacob, Anusha Mony, H. Nair, Sam Rajan, D. Satheesh, Jayakumari Isac
The high temperature superconductors are ceramic materials with layers of Copper-oxide spaced by layers containing Barium and other atoms. The Yttrium compound is somewhat unique in that it has a regular crystal structure while the Lanthanum version is classified as a solid solution. The Yttrium compound is often called the 1-2-3 superconductor because of the ratios of its constituents. Lanthanum Zirconium Yttrium Barium Calcium Copper Oxide (LaZrYBaCaCuO) was prepared by the usual solid state reaction method. In order to show the viability of the proposed method, super-conducting powder was prepared in special furnace. The sample was analyzed by X-ray Diffraction (XRD), Particle size determination, SEM and EDX. The comparison of XRD results with JCPDS files confirmed the orthorhombic structure of the sample with a ≠ b ≠ c and α = β = γ = 90°. Scanning Electron Microscopy (SEM) studies revealed that its particle size is in the nanometer range. It also confirmed the calculated value of particle size from Debye Scherrer’s formula. EDX spectrum shows the elements of the sample. X-ray instrumental peak broadening analysis was used to evaluate the size and lattice strain by the Williamson-Hall Plot method.
{"title":"Studies on Nano Crystalline Ceramic Superconductor LaZrYBaCa 2 Cu 3 O 11 at Three Different Temperatures","authors":"A. S. Nair, V. Vinila, Sheelakumari Issac, R. Jacob, Anusha Mony, H. Nair, Sam Rajan, D. Satheesh, Jayakumari Isac","doi":"10.4236/JCPT.2014.42016","DOIUrl":"https://doi.org/10.4236/JCPT.2014.42016","url":null,"abstract":"The high temperature superconductors are ceramic materials with layers \u0000of Copper-oxide spaced by layers containing Barium and other atoms. The Yttrium \u0000compound is somewhat unique in that it has a regular crystal structure while \u0000the Lanthanum version is classified as a solid solution. The Yttrium compound \u0000is often called the 1-2-3 superconductor because of the ratios of its constituents. \u0000Lanthanum Zirconium Yttrium Barium Calcium Copper Oxide (LaZrYBaCaCuO) was \u0000prepared by the usual solid state reaction method. In order to show the \u0000viability of the proposed method, super-conducting powder was prepared in \u0000special furnace. The sample was analyzed by X-ray Diffraction (XRD), Particle \u0000size determination, SEM and EDX. The comparison of XRD results with JCPDS files \u0000confirmed the orthorhombic structure of the sample with a ≠ b ≠ c and α = β = γ = 90°. Scanning \u0000Electron Microscopy (SEM) studies revealed that its particle size is in the \u0000nanometer range. It also confirmed the calculated value of particle size from \u0000Debye Scherrer’s formula. EDX spectrum shows the elements of the sample. X-ray \u0000instrumental peak broadening analysis was used to evaluate the size and lattice \u0000strain by the Williamson-Hall Plot method.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"04 1","pages":"126-133"},"PeriodicalIF":0.0,"publicationDate":"2014-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70942858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kinetics of the decomposition of racemic ibuprofen crystals were studied by non-isothermal analysis. Thermogravimetric analysis revealed that ibuprofen is thermally stable up to 152.6°C and the initial loss of mass was due to evaporation only. Activation energy, pre-exponential factor, activation entropy and Gibbs free energy for the decomposition of ibuprofen were determined using the integral method of Coats-Redfern (CR). Geometrical contraction models were found to be the best fits. The Arrheinus equation for the thermal decomposition of ibuprofen is k = (1.1 × 107) e–79125/RT sec–1.
{"title":"Reaction Rate Models for the Thermal Decomposition of Ibuprofen Crystals","authors":"S. Ramukutty, E. Ramachandran","doi":"10.4236/JCPT.2014.42010","DOIUrl":"https://doi.org/10.4236/JCPT.2014.42010","url":null,"abstract":"Kinetics of the decomposition of racemic ibuprofen crystals were studied \u0000by non-isothermal analysis. Thermogravimetric analysis revealed that ibuprofen \u0000is thermally stable up to 152.6°C and the initial loss of mass was due to \u0000evaporation only. Activation energy, pre-exponential factor, activation entropy \u0000and Gibbs free energy for the decomposition of ibuprofen were determined using \u0000the integral method of Coats-Redfern (CR). Geometrical contraction models were \u0000found to be the best fits. The Arrheinus equation for the thermal decomposition \u0000of ibuprofen is k = (1.1 × 107) e–79125/RT sec–1.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"04 1","pages":"71-78"},"PeriodicalIF":0.0,"publicationDate":"2014-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70943080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Crystallization and glass transition kinetics of Se90-xZn10Sbx (x = 0, 2, 4, 6) chalcogenide glasses prepared by conventional melt-quenching technique were studied under non-isothermal condition using a differential scanning Calorimeter (DSC) measurement at different heating rates 5, 7, 10 and 12°C/min. The glass transition temperatures Tg, the crystallization temperatures Tc and the peak temperatures of crystallization Tp were found to be dependent on the compositions and the heating rates. From the dependence on the heating rates of Tg and Tp, the activation energy for glass transition, Eg, and the activation energy for crystallization, Ec, are calculated and their composition dependence is discussed. The activation energy of glass transition Eg, Avrami index n, dimensionality of growth m and activation energy of crystallization Ec have been determined from different models.
{"title":"Kinetic Study of Non-Isothermal Crystallization in Se 90-x Zn 10 Sb x (x = 0, 2, 4, 6) Chalcogenide Glasses","authors":"L. Heireche, M. Heireche, M. Belhadji","doi":"10.4236/JCPT.2014.42014","DOIUrl":"https://doi.org/10.4236/JCPT.2014.42014","url":null,"abstract":"Crystallization and glass transition kinetics of Se90-xZn10Sbx (x \u0000= 0, 2, 4, 6) chalcogenide glasses \u0000prepared by conventional melt-quenching technique were studied under \u0000non-isothermal condition using a differential scanning Calorimeter (DSC) \u0000measurement at different heating rates 5, 7, 10 and 12°C/min. The glass transition temperatures Tg, the \u0000crystallization temperatures Tc and the peak temperatures of \u0000crystallization Tp were found to be dependent on the \u0000compositions and the heating rates. From the dependence on the heating rates of Tg and Tp, the activation energy for glass \u0000transition, Eg, and the activation energy for \u0000crystallization, Ec, are calculated and their composition \u0000dependence is discussed. The activation energy of glass transition Eg, \u0000Avrami index n, dimensionality of growth m and activation energy \u0000of crystallization Ec have been determined from different \u0000models.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"2014 1","pages":"111-120"},"PeriodicalIF":0.0,"publicationDate":"2014-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70943168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pentacene thin layers were deposited on Si with the native oxide at 80°C by remote-plasma-assisted deposition (RPAD) using hydrogen-plasma cell to supply atomic hydrogen radicals. The deposition rate was increased by RPAD comparing to that by non-excited hydrogen gas supply whereas thermal evaporation rate of pentacene from crucible was same in the both process. DFM and XRD studies showed the grain laterally grew in the thin film phase with the size above 10 μm by RPAD. First-principles molecular orbital calculations suggested pentacene is evaporated from crucible as the trimer or larger cluster but atomic hydrogen penetrated into the cluster enhances cracking of pentacene clusters to the monomer.
{"title":"Remote-Plasma-Assisted Deposition of Pentacene Layer Using Atomic-Hydrogen","authors":"S. Yamauchi, T. Minakuchi, Miyuki Onodera","doi":"10.4236/JCPT.2014.41002","DOIUrl":"https://doi.org/10.4236/JCPT.2014.41002","url":null,"abstract":"Pentacene thin layers were deposited on Si with the native oxide at 80°C \u0000by remote-plasma-assisted deposition (RPAD) using hydrogen-plasma cell to \u0000supply atomic hydrogen radicals. The deposition rate was increased by RPAD comparing \u0000to that by non-excited hydrogen gas supply whereas thermal evaporation rate of \u0000pentacene from crucible was same in the both process. DFM and XRD studies \u0000showed the grain laterally grew in the thin film phase with the size above 10 μm \u0000by RPAD. First-principles molecular orbital calculations suggested pentacene is evaporated from crucible as the trimer or larger cluster but \u0000atomic hydrogen penetrated into the cluster enhances cracking of pentacene \u0000clusters to the monomer.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"04 1","pages":"14-19"},"PeriodicalIF":0.0,"publicationDate":"2014-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70942312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Thermochromic liquid crystals (TLC) and true-colour digital image processing have been successfully used in non-intrusive technical, industrial and biomedical studies and applications. Thin coatings of TLC at surfaces are utilized to obtain detailed temperature distributions and heat transfer rates for steady or transient processes. Liquid crystals also can be used to make the temperature and velocity fields in liquids visible by the simple expedient of directly mixing the liquid crystal material into the liquid (water, glycerol, glycol, and silicone oils) in very small quantities to use as thermal and hydrodynamic tracers. In biomedical situations, e.g., skin diseases, breast cancer, blood circulation and other medical application, TLC and image processing are successfully used as an additional non-invasive diagnostic method especially useful for screening large groups of potential patients. The history of this technique is reviewed, principal methods and tools are described and some examples are presented. Also steady-state and transient liquid crystal thermography (LCT) is used to measure local heat transfer on a plate equipped with transverse vortex generators. Automated evaluation allows determining the heat transfer coefficient without arbitrary influence of human interpretation.
{"title":"The Use of Liquid Crystal Thermography in Selected Technical and Medical Applications—Recent Development","authors":"J. Stasiek, M. Jewartowski, T. Kowalewski","doi":"10.4236/JCPT.2014.41007","DOIUrl":"https://doi.org/10.4236/JCPT.2014.41007","url":null,"abstract":"Thermochromic liquid crystals (TLC) and true-colour digital image processing have been successfully used in non-intrusive technical, industrial and biomedical studies and applications. Thin coatings of TLC at surfaces are utilized to obtain detailed temperature distributions and heat transfer rates for steady or transient processes. Liquid crystals also can be used to make the temperature and velocity fields in liquids visible by the simple expedient of directly mixing the liquid crystal material into the liquid (water, glycerol, glycol, and silicone oils) in very small quantities to use as thermal and hydrodynamic tracers. In biomedical situations, e.g., skin diseases, breast cancer, blood circulation and other medical application, TLC and image processing are successfully used as an additional non-invasive diagnostic method especially useful for screening large groups of potential patients. The history of this technique is reviewed, principal methods and tools are described and some examples are presented. Also steady-state and transient liquid crystal thermography (LCT) is used to measure local heat transfer on a plate equipped with transverse vortex generators. Automated evaluation allows determining the heat transfer coefficient without arbitrary influence of human interpretation.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"4 1","pages":"46-59"},"PeriodicalIF":0.0,"publicationDate":"2014-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70942974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuqing Huang, Zaiyou Tan, Lin Luo, Hui Yang, Chunmei Tong, Wenfei Chen, Tingyu Huang, Ruiling Liu
Objective: To determine the transformation between two known crystal forms of the title compound (C18H23NO3, Mr = 301.37). Methods: To recrystallize or heat the crystals and determine the crystal form by testing the melting points. Results: Both the two known crystal forms of the title compound can be changed by dissolving into different organic solvents such as acetone and ethyl acetate. Crystal form I was not influenced by heating while crystal form II can be transformed to crystal form I through melting method. Conclusion: Organic solvents have significant influences on the two crystal forms of title compound. Crystal form I shows a better thermal stability than crystal form II.
{"title":"The Polymorphism and Transformation of (3aRS, 4RS, 7RS, 7aSR)-2-(Tricyclo(3.3.1.13,7)decan-1-yl)-4,5,6,7- tetrahydro-4,7-eposyisoindoline-1,3-dione (SU2162)—A Novel Anticancer Compound","authors":"Yuqing Huang, Zaiyou Tan, Lin Luo, Hui Yang, Chunmei Tong, Wenfei Chen, Tingyu Huang, Ruiling Liu","doi":"10.4236/JCPT.2014.41004","DOIUrl":"https://doi.org/10.4236/JCPT.2014.41004","url":null,"abstract":"Objective: To determine the transformation between two known crystal \u0000forms of the title compound (C18H23NO3, Mr = 301.37). Methods: To recrystallize or heat the crystals and determine \u0000the crystal form by testing the melting points. Results: Both the two known \u0000crystal forms of the title compound can be changed by dissolving into different \u0000organic solvents such as acetone and ethyl acetate. Crystal form I was not influenced by heating while crystal form II can be transformed to crystal form I through melting method. Conclusion: Organic solvents have significant \u0000influences on the two crystal forms of title compound. Crystal form I shows a better thermal stability than crystal form II.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"04 1","pages":"27-30"},"PeriodicalIF":0.0,"publicationDate":"2014-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70942432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Single crystals of La4Mo7O27 have been successfully grown by the flux growth method H3BO3 as the flux in a plantium crucible using the starting materials of La2O3, H3BO3 and MoO3 in a molar ratio of 0.16:0.16:0.68, in which H3BO3 acted as a flux. Transparent colorless crystals were obtained with size of 0.8 × 0.3 × 0.2 mm3 under the optimized crystal growth conditions: growth temperature of 727°C, growth time of 95 h and cooling rate of 0.5°C/hr. A well-developed morphology of the crystals was observed and analyzed. The preparation process of starting materials on crystal growth was investigated. The grown crystals were characterized by powder X-ray diffraction (PXRD), EDAX, SEM, UV-Vis, photoluminescence studies, thermal analysis, dielectric studies and second harmonic generation (SHG). The results are presented and discussed.
{"title":"Single Crystal Growth of Lanthanum(III) Molybdate(VI) (La 4 Mo 7 O 27 ) Using H 3 BO 3 Flux","authors":"M. Rajalakshmi, R. Indirajith, R. Gopalakrishnan","doi":"10.4236/JCPT.2014.41006","DOIUrl":"https://doi.org/10.4236/JCPT.2014.41006","url":null,"abstract":"Single crystals of La4Mo7O27 have been successfully grown by the flux growth method H3BO3 as the flux in a plantium crucible \u0000using the starting materials of La2O3, H3BO3 and MoO3 in a molar ratio of 0.16:0.16:0.68, in which H3BO3 acted as a flux. Transparent \u0000colorless crystals were obtained with size of 0.8 × 0.3 × 0.2 mm3 under the optimized crystal growth conditions: growth \u0000temperature of 727°C, growth time of 95 \u0000h and cooling rate of 0.5°C/hr. A well-developed morphology of the crystals was \u0000observed and analyzed. The preparation process of starting materials on crystal \u0000growth was investigated. The grown crystals were characterized by powder X-ray \u0000diffraction (PXRD), EDAX, SEM, UV-Vis, photoluminescence studies, thermal analysis, dielectric studies \u0000and second harmonic generation (SHG). The results are presented and discussed.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"4 1","pages":"39-45"},"PeriodicalIF":0.0,"publicationDate":"2014-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70942661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Various characteristics of mesomorphism can be explained using intermolecular interactions between a pair of liquid crystalline molecules. The intermolecular interactions have been calculated considering multipole-multicentere expansion method and modified by second order perturbation treatments. For calculation of multipole i.e. charge, dipole, etc. at each atomic center of molecules, para-butyl-p’-cyano-biphenyl, GAMESS, an ab initio program, with 6-31G* basis set has been used. The stacking, in-plane and terminal interaction energies explain the liquid crystalline behaviour of the system.
{"title":"Study of Intermolecular Interactions in Liquid Crystals: Para-butyl-p’-cyano-biphenyl","authors":"K. K. Dwivedi, M. Dwivedi, S. N. Tiwari","doi":"10.4236/JCPT.2014.41005","DOIUrl":"https://doi.org/10.4236/JCPT.2014.41005","url":null,"abstract":"Various characteristics of mesomorphism can be explained using \u0000intermolecular interactions between a pair of liquid crystalline molecules. The \u0000intermolecular interactions have been calculated considering multipole-multicentere expansion method and modified by second order perturbation treatments. For \u0000calculation of multipole i.e. charge, dipole, etc. at each atomic center of molecules, \u0000para-butyl-p’-cyano-biphenyl, GAMESS, an ab initio program, with 6-31G* basis set has been used. The stacking, in-plane and terminal interaction \u0000energies explain the liquid crystalline behaviour of the system.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"4 1","pages":"31-38"},"PeriodicalIF":0.0,"publicationDate":"2014-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70942492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ferro nematic suspensions are the prominent materials to enhance the electro optical performance of liquid crystal displays. Electro optical properties of polymer dispersed liquid crystal (PDLC) display with the introduction of Barium Titanate nanoparticles have been investigated in this article and it is shown that there is a considerable enhancement in electro-optical response of the displays. The nanoparticles lower the switch-on electric field and thereby increase the optical transmission at certain voltages of the displays. The electro-optical characteristics of the PDLC cells were investigated with a He-Ne laser followed by MatLab calculations.
{"title":"Effect of BaTiO 3 Nanoparticle on Electro-Optical Properties of Polymer Dispersed Liquid Crystal Displays","authors":"M. Darla, S. Hegde, S. Varghese","doi":"10.4236/JCPT.2014.41008","DOIUrl":"https://doi.org/10.4236/JCPT.2014.41008","url":null,"abstract":"Ferro nematic suspensions are the prominent \u0000materials to enhance the electro optical performance of liquid crystal \u0000displays. Electro optical properties of polymer dispersed liquid crystal (PDLC) \u0000display with the introduction of \u0000Barium Titanate nanoparticles have been investigated in this article and it is \u0000shown that there is a considerable enhancement in electro-optical response of \u0000the displays. The nanoparticles lower the switch-on electric field and thereby \u0000increase the optical transmission at certain voltages of the displays. The \u0000electro-optical characteristics of the PDLC cells were investigated with a \u0000He-Ne laser followed by MatLab calculations.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"6 1","pages":"60-63"},"PeriodicalIF":0.0,"publicationDate":"2014-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4236/JCPT.2014.41008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70943029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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