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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202104807
|2 doi
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|a eng
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| 100 |
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|a Yunusa, Muhammad
|e verfasserin
|4 aut
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| 245 |
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|a Liquid Crystal Structure of Supercooled Liquid Gallium and Eutectic Gallium-Indium
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 13.10.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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|a Understanding the origin of structural ordering in supercooled liquid gallium (Ga) has been a great scientific quest in the past decades. Here, reflective polarized optical microscopy on Ga sandwiched between glasses treated with rubbed polymers reveals the onset of an anisotropic reflection at 120 °C that increases on cooling and persists down to room temperature or below. The polymer rubbing usually aligns the director of thermotropic liquid crystals (LCs) parallel to the rubbing direction. On the other hand, when Ga is sandwiched between substrates that align conventional LC molecules normal to the surface, the reflection is isotropic, but mechanical shear force induces anisotropic reflection that relaxes in seconds. Such alignment effects and shear-induced realignment are typical to conventional thermotropic LCs and indicate a LC structure of liquid Ga. Specifically, Ga textures obtained by atomic force and scanning electron microscopy reveal the existence of a lamellar structure corresponding to a smectic LC phase, while the nanometer-thin lamellar structure is transparent under transmission polarized optical microscopy. Such spatial molecular arrangements may be attributed to dimer molecular entities in the supercooled liquid Ga. The LC structure observation of electrically conductive liquid Ga can provide new opportunities in materials science and LC applications
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|a Journal Article
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|a liquid crystals
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|a liquid metals
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|a metallic liquids
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|a supercooled liquid gallium
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1 |
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|a Adaka, Alex
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Aghakhani, Amirreza
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shahsavan, Hamed
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Guo, Yubing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Alapan, Yunus
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jákli, Antal
|e verfasserin
|4 aut
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| 700 |
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|a Sitti, Metin
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 33(2021), 38 vom: 24. Sept., Seite e2104807
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:33
|g year:2021
|g number:38
|g day:24
|g month:09
|g pages:e2104807
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|u http://dx.doi.org/10.1002/adma.202104807
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