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Yıl 2021, Cilt: 42 Sayı: 1, 152 - 155, 29.03.2021

Aykut Evren Yavuz

https://doi.org/10.17776/csj.794871

Öz

Kaynakça

  • [1] de Gennes P. G., Prost J., The Physics of Liquid Crystals, Second ed., Oxford: Oxford Science Publications, (1995).
  • [2] Nastishin Y. A., Liu H., Schneider T., Nazerenko V., Vasyuta R., Shiyanovskii S. V., Lavrentovich O. D., Optical characterization of the nematic lyotropic chromonic liquid crystals: Light absorption, birefrigence, and scalar order parameter, Phys. Rev. E, 72 (2005).
  • [3] Kanwar A., Measurement of order parameter, birefrigence and polarizibility of liquid crystals, J. Opt., 42 (2013) 311-315.
  • [4] Dierking I., Neto A. M. F., Novel trends in lyotropic liquid crystals, Crystals, 10 (2020) 604.
  • [5] Neto A. M. F., Salinas S. R. A., Physics of lyotropic liquid crystals, Oxford: Oxford Science Publications, (2005).
  • [6] Akpinar E., Canioz C., Turkmen M., Reis D., Neto A. M. F., Effect of the surfactant alkyl chain length on the stabilisation of lyotropic nematic phases, Liq. Crys., 45 (2018) 219.
  • [7] Santoro P. A., Sampaio A. R., da Luz H.L.F., Palangana A. J., Temperature dependence of refractive indices near uniaxial–biaxial nematic phase transition, Physics Letters A, 353 (2006) 512-515.
  • [8] Otón E., Otón J. M., Caño-García M., Escolano J. M., Quintana X., Geday M. A., Rapid detection of pathogens using lyotropic liquid crystals, Opt. Express, 27 (2019), 10098-10107.
  • [9] Shiyanovskii S. V., Lavrentovich O. D., Schneider T., Ishikawa T., Smalyukh I. I., Woolverton C. J., Niehaus G. D., Doane K. J., Lyotropic chromonic liquid crystals for biological sensing applications, Mol. Cryst. Liq. Cryst., 434 (2005), 259–270.
  • [10] Luders D.D., Oliveira D.A., Kimura N.M., Simões M, Palangana A.J., Order parameter in the nematic–isotropic phase transition, J. Mol. Liq., 207 (2015) 195–199.
  • [11] Braga W. S., Kimura N. M., Luders D. D., Sampaio A. R., Santoro P. A., Palangana A. J., Reentrant isotropic-calamitic nematic phase transition in potassium laurate-decanol-D2O mixtures, Eur. Phys. J. E, 24 (2007) 247–250.
  • [12] Oliveira D.A., Hioka N., Luders D.D., Kimura N.M., Simões M., Palangana A.J., Absorption coefficient and order parameter in a reentrant isotropic–calamitic nematic phase transition, J. Mol. Liq., 166 (2012) 81-83.
  • [13] Singh A.K., Manohar R., Shukla J.P., Biradar A.M., Refractive indices, order parameter and optical transmittance studies of a nematic liquid crystal mixture, Acta Phys. Pol. A, 110 (2006) 485-493.
  • [14] Kanwar A., Measurement of order parameter, birefrigence and polarizibility of liquid crystals, J. Opt., 42 (2013) 311-315.
  • [15] Kuczyński W., Żywucki B., Małecki J., Determination of orientational order parameter in various liquid-crystalline phases, Mol. Crys. Liq. Crys., 381 (2002) 1-19.
  • [16] Kimura N. M., Santoro P. A., Fernandes P. R. G., Palangana A. J., Reentrant isotropic–discotic nematic lyotropic phase transition: a refractive index study, Liq. Crys., 31 (2004) 347–350.
  • [17] Braga W.S., Santos O.R., Luders D.D., Kimura N.M., Sampaio A.R., Simões M., Palangana A.J., Refractive index measurements in uniaxial and biaxial lyotropic nematic phases, J. Mol. Liq., 213 (2016) 186-190.
  • [18] Akpinar E., Turkmen M., Canioz C., Neto A. M. F.; Role of kosmotrope-chaotrope interactions at micelle surfaces on the stabilization of lyotropic nematic phases, Eur. Phys. J. E, 39 (2016), 1-16.
  • [19] Braga W.S., Santos O.R., Sampaio A.R., Kimura N.M., Simões M., Palangana A.J., An optical conoscopy study of a reentrant discotic nematic-biaxial nematic phase transition, J. Mol. Liq., 170 (2012) 72-75.
  • [20] Santos O.R., Braga W.S., Luders D.D., Kimura N.M., Simões M., Palangana A.J., Study of optical conoscopy in uniaxial and biaxial nematic lyotropic phases, J. Mol. Liq., 197 (2014) 120-123.

Determination of order parameter and birefringence depending on temperature of nematic calamitic mesophase formed by TTAB + water binary system using polarized microscopy

Yıl 2021, Cilt: 42 Sayı: 1, 152 - 155, 29.03.2021

Aykut Evren Yavuz

https://doi.org/10.17776/csj.794871

Öz

In the present study, the temperature-dependent optical transmittances of lyotropic nematic calamitic mesophase formed by TTAB-water binary system were measured for certain wavelengths under polarized microscopy to obtain macroscopic order parameter with birefringence. Because birefringence in lyotropics is quite small (order of 10-3), it is very difficult to make sensitive measurements of birefringence and to obtain order parameter. The study easily achieved the order parameter depending on temperature for different wavelengths only using polarized microscopy. Therefore, the parameter could be more easily determined in liquid crystal application and the physical properties of liquid crystals, especially for lyotropics, can be better understood. 

Anahtar Kelimeler

Lyotropic nematic mesophases polarized microscopy birefringence order parameter

Kaynakça

  • [1] de Gennes P. G., Prost J., The Physics of Liquid Crystals, Second ed., Oxford: Oxford Science Publications, (1995).
  • [2] Nastishin Y. A., Liu H., Schneider T., Nazerenko V., Vasyuta R., Shiyanovskii S. V., Lavrentovich O. D., Optical characterization of the nematic lyotropic chromonic liquid crystals: Light absorption, birefrigence, and scalar order parameter, Phys. Rev. E, 72 (2005).
  • [3] Kanwar A., Measurement of order parameter, birefrigence and polarizibility of liquid crystals, J. Opt., 42 (2013) 311-315.
  • [4] Dierking I., Neto A. M. F., Novel trends in lyotropic liquid crystals, Crystals, 10 (2020) 604.
  • [5] Neto A. M. F., Salinas S. R. A., Physics of lyotropic liquid crystals, Oxford: Oxford Science Publications, (2005).
  • [6] Akpinar E., Canioz C., Turkmen M., Reis D., Neto A. M. F., Effect of the surfactant alkyl chain length on the stabilisation of lyotropic nematic phases, Liq. Crys., 45 (2018) 219.
  • [7] Santoro P. A., Sampaio A. R., da Luz H.L.F., Palangana A. J., Temperature dependence of refractive indices near uniaxial–biaxial nematic phase transition, Physics Letters A, 353 (2006) 512-515.
  • [8] Otón E., Otón J. M., Caño-García M., Escolano J. M., Quintana X., Geday M. A., Rapid detection of pathogens using lyotropic liquid crystals, Opt. Express, 27 (2019), 10098-10107.
  • [9] Shiyanovskii S. V., Lavrentovich O. D., Schneider T., Ishikawa T., Smalyukh I. I., Woolverton C. J., Niehaus G. D., Doane K. J., Lyotropic chromonic liquid crystals for biological sensing applications, Mol. Cryst. Liq. Cryst., 434 (2005), 259–270.
  • [10] Luders D.D., Oliveira D.A., Kimura N.M., Simões M, Palangana A.J., Order parameter in the nematic–isotropic phase transition, J. Mol. Liq., 207 (2015) 195–199.
  • [11] Braga W. S., Kimura N. M., Luders D. D., Sampaio A. R., Santoro P. A., Palangana A. J., Reentrant isotropic-calamitic nematic phase transition in potassium laurate-decanol-D2O mixtures, Eur. Phys. J. E, 24 (2007) 247–250.
  • [12] Oliveira D.A., Hioka N., Luders D.D., Kimura N.M., Simões M., Palangana A.J., Absorption coefficient and order parameter in a reentrant isotropic–calamitic nematic phase transition, J. Mol. Liq., 166 (2012) 81-83.
  • [13] Singh A.K., Manohar R., Shukla J.P., Biradar A.M., Refractive indices, order parameter and optical transmittance studies of a nematic liquid crystal mixture, Acta Phys. Pol. A, 110 (2006) 485-493.
  • [14] Kanwar A., Measurement of order parameter, birefrigence and polarizibility of liquid crystals, J. Opt., 42 (2013) 311-315.
  • [15] Kuczyński W., Żywucki B., Małecki J., Determination of orientational order parameter in various liquid-crystalline phases, Mol. Crys. Liq. Crys., 381 (2002) 1-19.
  • [16] Kimura N. M., Santoro P. A., Fernandes P. R. G., Palangana A. J., Reentrant isotropic–discotic nematic lyotropic phase transition: a refractive index study, Liq. Crys., 31 (2004) 347–350.
  • [17] Braga W.S., Santos O.R., Luders D.D., Kimura N.M., Sampaio A.R., Simões M., Palangana A.J., Refractive index measurements in uniaxial and biaxial lyotropic nematic phases, J. Mol. Liq., 213 (2016) 186-190.
  • [18] Akpinar E., Turkmen M., Canioz C., Neto A. M. F.; Role of kosmotrope-chaotrope interactions at micelle surfaces on the stabilization of lyotropic nematic phases, Eur. Phys. J. E, 39 (2016), 1-16.
  • [19] Braga W.S., Santos O.R., Sampaio A.R., Kimura N.M., Simões M., Palangana A.J., An optical conoscopy study of a reentrant discotic nematic-biaxial nematic phase transition, J. Mol. Liq., 170 (2012) 72-75.
  • [20] Santos O.R., Braga W.S., Luders D.D., Kimura N.M., Simões M., Palangana A.J., Study of optical conoscopy in uniaxial and biaxial nematic lyotropic phases, J. Mol. Liq., 197 (2014) 120-123.
Toplam 20 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Konular Klasik Fizik (Diğer)
Bölüm Natural Sciences
Yazarlar

Aykut Evren Yavuz 0000-0002-5649-6442

Yayımlanma Tarihi 29 Mart 2021
Gönderilme Tarihi 14 Eylül 2020
Kabul Tarihi 17 Kasım 2020
Yayımlandığı Sayı Yıl 2021Cilt: 42 Sayı: 1

Kaynak Göster

APA Yavuz, A. E. (2021). Determination of order parameter and birefringence depending on temperature of nematic calamitic mesophase formed by TTAB + water binary system using polarized microscopy. Cumhuriyet Science Journal, 42(1), 152-155. https://doi.org/10.17776/csj.794871