Zobrazeno 1 - 10
of 320
pro vyhledávání: '"Georg. H. Mehl"'
Autor:
Evangelia E. Zavvou, Chris Welch, Georg H. Mehl, Alexandros G. Vanakaras, Panagiota K. Karahaliou
Publikováno v:
Materials, Vol 17, Iss 11, p 2555 (2024)
We present a comparative study of the optical and dielectric anisotropy of a laterally fluorinated liquid crystal dimer and its homologous trimer, both exhibiting two nematic phases. In the high-temperature nematic phase, both oligomers exhibit posit
Externí odkaz:
https://doaj.org/article/009ef9bdb1fe4c2699e9a3e3a4e1b20e
Autor:
Wanhe Jiang, Georg H. Mehl
Publikováno v:
Crystals, Vol 13, Iss 12, p 1614 (2023)
A new mesogenic non-symmetric dimeric monomer with a terminal olefin function, forming a twist bend nematic (Ntb) as well as a nematic (N) phase, was synthesized, using an enhanced synthetic methodology, which avoids isomerization of the terminal dou
Externí odkaz:
https://doaj.org/article/8f28713ddd284d71bb7dcddb7706e43a
Publikováno v:
Crystals, Vol 13, Iss 6, p 962 (2023)
Nematic–nematic transitions in a highly polar nematic compound are studied, in thick cells in which the molecules are aligned parallel to the substrates but perpendicular to the applied electric field, using dielectric spectroscopy in the frequency
Externí odkaz:
https://doaj.org/article/e6210c239cbd4554b558a953ec19be1c
Autor:
Robert D. Crapnell, Huda S. Alhasan, Lee I. Partington, Yan Zhou, Ziauddin Ahmed, Amal A. Altalhi, Thomas S. Varley, Nadiyah Alahmadi, Georg H. Mehl, Stephen M. Kelly, Nathan S. Lawrence, Frank Marken, Jay D. Wadhawan
Publikováno v:
ACS Omega, Vol 6, Iss 7, Pp 4630-4640 (2021)
Externí odkaz:
https://doaj.org/article/368472f26b3247158670fcf4309e8846
Publikováno v:
International Journal of Molecular Sciences, Vol 23, Iss 19, p 11018 (2022)
Polarized beam infrared (IR) spectroscopy provides valuable information on changes in the orientation of samples in nematic phases, especially on the role of intermolecular interactions in forming the periodically modulated twist–bent phase. Infrar
Externí odkaz:
https://doaj.org/article/1c5aa1a06c7f4062aae2a54e1ddd3809
Publikováno v:
International Journal of Molecular Sciences, Vol 23, Iss 14, p 8005 (2022)
Infrared spectroscopy (IR) and quantum chemistry calculations that are based on the density functional theory (DFT) have been used to study the structure and molecular interactions of the nematic and twist-bend phases of thioether-linked dimers. Infr
Externí odkaz:
https://doaj.org/article/0336ecda8a6549a183c3ef35833eaa26
Spontaneous mirror symmetry breaking and chiral segregation in the achiral ferronematic compound DIO
Publikováno v:
Articles
An achiral compound, DIO, known to exhibit three nematic phases namely N, NX and NF, is studied by polarizing microscopy and electro-optics for different surface conditions in confinement. The high temperature N phase assigned initially as a conventi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8792463cfab83367b02d4c74eab3d390
https://doi.org/10.1039/d3cp00357d
https://doi.org/10.1039/d3cp00357d
Autor:
Xiuze Wang, Julian A. J. Fells, Taimoor Ali, Jia-De Lin, Chris Welch, Georg H. Mehl, Timothy D. Wilkinson, Martin J. Booth, Stephen M. Morris, Steve J. Elston
Publikováno v:
AIP Advances, Vol 10, Iss 5, Pp 055011-055011-6 (2020)
In this paper, we demonstrate analog phase modulation in a transmissive configuration using the flexoelectro-optic effect in short-pitch chiral nematic liquid crystal (LC) devices. Two different modes are considered, both of which are shown to genera
Externí odkaz:
https://doaj.org/article/47bbc6cecbc0413faba7b40ebfbba24b
Publikováno v:
Crystals; Volume 13; Issue 6; Pages: 962
Nematic–nematic transitions in a highly polar nematic compound are studied, in thick cells in which the molecules are aligned parallel to the substrates but perpendicular to the applied electric field, using dielectric spectroscopy in the frequency
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::dd9b30f134f34bf94d60ed97ab1aa287
Publikováno v:
Journal of Umm Al-Qura University for Applied Sciences.
The intense absorbance and scattering of incident light at the surface plasmon resonance wavelength of gold nanoparticles (AuNPs) is of paramount importance in its various and diverse applications. Being governed by their morphologies and surface che
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7c4c1f200b44f075f492c8df3df7e4d
https://doi.org/10.1007/s43994-023-00057-2
https://doi.org/10.1007/s43994-023-00057-2