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description Publicationkeyboard_double_arrow_right Article 2017 United Kingdom, IrelandPublisher:American Physical Society (APS) Publicly fundedFunded by:NSF | US Ireland R&D Partnershi..., SFI | Ferroelectric and Electro...NSF| US Ireland R&D Partnership: Ferroelectric and Electroclinic Effects in Nano-particle Doped de Vries Smectic Liquid Crystals: Molecular Organisation and Order ,SFI| Ferroelectric and Electroclinic Effects in Nano-particle Doped de Vries Smectic Liquid Crystals: Molecular Organisation and OrderS. P. Sreenilayam; Dena Mae Agra-Kooijman; Vitaly P. Panov; V. Swaminathan; Jagdish K. Vij; Yu. P. Panarin; Antoni Kocot; A. Panov; D. Rodriguez-Lojo; Paul J. Stevenson; Michael R. Fisch; Satyendra Kumar;pmid: 28415229
A heptamethyltrisiloxane liquid crystal (LC) exhibiting I-SmA^{*}-SmC^{*} phases has been characterized by calorimetry, polarizing microscopy, x-ray diffraction, electro-optics, and dielectric spectroscopy. Observations of a large electroclinic effect, a large increase in the birefringence (Δn) with electric field, a low shrinkage in the layer thickness (∼1.75%) at 20 °C below the SmA^{*}-SmC^{*} transition, and low values of the reduction factor (∼0.40) suggest that the SmA^{*} phase in this material is of the de Vries type. The reduction factor is a measure of the layer shrinkage in the SmC^{*} phase and it should be zero for an ideal de Vries. Moreover, a decrease in the magnitude of Δn with decreasing temperature indicates the presence of the temperature-dependent tilt angle in the SmA^{*} phase. The electro-optic behavior is explained by the generalized Langevin-Debye model as given by Shen et al. [Y. Shen et al., Phys. Rev. E 88, 062504 (2013)10.1103/PhysRevE.88.062504]. The soft-mode dielectric relaxation strength shows a critical behavior when the system goes from the SmA^{*} to the SmC^{*} phase.
Queen's University R... arrow_drop_down https://link.aps.org/accepted/...ArticleLicense: publisher-specific, author manuscriptData sources: UnpayWallhttps://doi.org/10.1103/physre...Article . 2017 . Peer-reviewedLicense: APS Licenses for Journal Article Re-useData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1103/physreve.95.032701&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routeshybrid 17 citations 17 popularity Average influence Average impulse Top 10% Powered by BIP!more_vert Queen's University R... arrow_drop_down https://link.aps.org/accepted/...ArticleLicense: publisher-specific, author manuscriptData sources: UnpayWallhttps://doi.org/10.1103/physre...Article . 2017 . Peer-reviewedLicense: APS Licenses for Journal Article Re-useData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1103/physreve.95.032701&type=result"></script>'); --> </script>
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description Publicationkeyboard_double_arrow_right Article 2017 United Kingdom, IrelandPublisher:American Physical Society (APS) Publicly fundedFunded by:NSF | US Ireland R&D Partnershi..., SFI | Ferroelectric and Electro...NSF| US Ireland R&D Partnership: Ferroelectric and Electroclinic Effects in Nano-particle Doped de Vries Smectic Liquid Crystals: Molecular Organisation and Order ,SFI| Ferroelectric and Electroclinic Effects in Nano-particle Doped de Vries Smectic Liquid Crystals: Molecular Organisation and OrderS. P. Sreenilayam; Dena Mae Agra-Kooijman; Vitaly P. Panov; V. Swaminathan; Jagdish K. Vij; Yu. P. Panarin; Antoni Kocot; A. Panov; D. Rodriguez-Lojo; Paul J. Stevenson; Michael R. Fisch; Satyendra Kumar;pmid: 28415229
A heptamethyltrisiloxane liquid crystal (LC) exhibiting I-SmA^{*}-SmC^{*} phases has been characterized by calorimetry, polarizing microscopy, x-ray diffraction, electro-optics, and dielectric spectroscopy. Observations of a large electroclinic effect, a large increase in the birefringence (Δn) with electric field, a low shrinkage in the layer thickness (∼1.75%) at 20 °C below the SmA^{*}-SmC^{*} transition, and low values of the reduction factor (∼0.40) suggest that the SmA^{*} phase in this material is of the de Vries type. The reduction factor is a measure of the layer shrinkage in the SmC^{*} phase and it should be zero for an ideal de Vries. Moreover, a decrease in the magnitude of Δn with decreasing temperature indicates the presence of the temperature-dependent tilt angle in the SmA^{*} phase. The electro-optic behavior is explained by the generalized Langevin-Debye model as given by Shen et al. [Y. Shen et al., Phys. Rev. E 88, 062504 (2013)10.1103/PhysRevE.88.062504]. The soft-mode dielectric relaxation strength shows a critical behavior when the system goes from the SmA^{*} to the SmC^{*} phase.
Queen's University R... arrow_drop_down https://link.aps.org/accepted/...ArticleLicense: publisher-specific, author manuscriptData sources: UnpayWallhttps://doi.org/10.1103/physre...Article . 2017 . Peer-reviewedLicense: APS Licenses for Journal Article Re-useData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1103/physreve.95.032701&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routeshybrid 17 citations 17 popularity Average influence Average impulse Top 10% Powered by BIP!more_vert Queen's University R... arrow_drop_down https://link.aps.org/accepted/...ArticleLicense: publisher-specific, author manuscriptData sources: UnpayWallhttps://doi.org/10.1103/physre...Article . 2017 . Peer-reviewedLicense: APS Licenses for Journal Article Re-useData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1103/physreve.95.032701&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu