{"title":"Electronic properties of armchair graphene nanoribbons","authors":"A. Bhojani, H. Soni, P. Jha","doi":"10.1063/5.0017097","DOIUrl":"https://doi.org/10.1063/5.0017097","url":null,"abstract":"","PeriodicalId":222119,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2019","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121831608","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}
{"title":"Effect of soft repulsive wall on the bulk phases of thermotropic liquid crystals","authors":"J. Kaur, D. Deb","doi":"10.1063/5.0017766","DOIUrl":"https://doi.org/10.1063/5.0017766","url":null,"abstract":". Using the computer simulations, the effect of soft repulsive wall on a system comprising of thermotropic liquid crystalline material is studied. We place the walls perpendicular to the z-axis at the ends of an anisotropic box with the periodic boundary conditions along x and y axes. Here, the wall interaction strength, temperature and density are the control parameters. We analysed the effect of temperature on the system confined by the wall at different number densities. Within a limited range of temperatures, we observe that temperature is actually a good control parameter in the system. Moreover, the effect of wall on the system is more pronounced at low number densities.","PeriodicalId":222119,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2019","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125406531","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}
Sanyukta Ghosh, K. K. Raut, A. Ramakrishnan, Kuei-Hsien Chen, Soon-jik Hong, R. Mallik
{"title":"Thermoelectric properties of p-type filled skutterudites SxCo4Sb12","authors":"Sanyukta Ghosh, K. K. Raut, A. Ramakrishnan, Kuei-Hsien Chen, Soon-jik Hong, R. Mallik","doi":"10.1063/5.0016889","DOIUrl":"https://doi.org/10.1063/5.0016889","url":null,"abstract":". The electronegativity difference between the filler and the host atom of skutterudites determines the bonding type, which effects the thermoelectric properties. The electropositive elements with low electronegativity compared to Sb atom can form n-type filled skutterudites. In this study, the electronegative element sulphur has filled into voids. A series of S x Co 4 Sb 12 (x= 0.05 to 0.4) compounds were synthesized by the solid-state method. CoSbS secondary phase was observed for x > 0.05. Filling fraction of sulphur into the void (̴ 0.04) was calculated using electron probe microanalyzer which agrees with Rietveld refinement of the X-ray diffraction pattern. The transport properties were measured from 350 K to 723 K. The positive Seebeck coefficient (S) confirms p-type semiconducting nature. S and the electrical resistivity (ρ) decreased with increasing x due to increased carrier concentration (n). All the samples except x =0.05 possess almost same S and ρ due to saturation of filling fraction. The enhanced phonon scattering in S x Co 4 Sb 12 resulted in low thermal conductivity (κ). The highest zT of 0.18 at 623 K was achieved for S 0.15 Co 4 Sb 12 .","PeriodicalId":222119,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2019","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131541515","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}
S. Riyajuddin, F. Ali, Sushil Kumar, Kashif Azmi, K. Ghosh
{"title":"3D-Ni-foam/graphene heterostructure decorated with g-C3N4composite: A noble-metal free electrocatalyst for hydrogen evolution reaction","authors":"S. Riyajuddin, F. Ali, Sushil Kumar, Kashif Azmi, K. Ghosh","doi":"10.1063/5.0017616","DOIUrl":"https://doi.org/10.1063/5.0017616","url":null,"abstract":"","PeriodicalId":222119,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2019","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116059705","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}
{"title":"X-ray diffraction analysis and up-conversion luminescence properties of Er3+-doped La2Ti2O7 powders","authors":"R. Swami, A. Arora, K. Sreenivas","doi":"10.1063/5.0016693","DOIUrl":"https://doi.org/10.1063/5.0016693","url":null,"abstract":"","PeriodicalId":222119,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2019","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129311689","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}
{"title":"Ab-initio study of charged oxygen defects in Nd2Zr2O7","authors":"P. Ghosh, A. Arya","doi":"10.1063/5.0017361","DOIUrl":"https://doi.org/10.1063/5.0017361","url":null,"abstract":"","PeriodicalId":222119,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2019","volume":"152 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132151580","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}