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Dynamics of magnetic droplet soliton: freezing and thawing; coexisting and interacting
S. Chung,M. Ahlberg,S. Jiang,A. Frisk,M. Khademi,R. Khymyn,A. A. Awad,Q. Tuan Le,H. Mazraati,A. Houshang,M. Mohseni,M. Weigand,I. Bykova,F. Groß,E. Goering,G. Schutz,J. Grafe,O. Heinonen,J. Akerman 한국자기학회 2023 한국자기학회 학술연구발표회 논문개요집 Vol.33 No.1
Oh, Se-Kyung,Baek, Jeong-In,Weigand, Karl M,Venselaar, Hanka,Swarts, Herman G P,Park, Seong-Hyun,Hashim Raza, Muhammad,Jung, Da Jung,Choi, Soo-Young,Lee, Sang-Heun,Friedrich, Thomas,Vriend, Gert,Koend Macmillan Publishers Limited 2015 EUROPEAN JOURNAL OF HUMAN GENETICS Vol.23 No.5
<P>Hereditary sensorineural hearing loss is an extremely clinical and genetic heterogeneous disorder in humans. Especially, syndromic hearing loss is subdivided by combinations of various phenotypes, and each subtype is related to different genes. We present a new form of progressive hearing loss with migraine found to be associated with a variant in the ATP1A2 gene. The ATP1A2 gene has been reported as the major genetic cause of familial migraine by several previous studies. A Korean family presenting progressive hearing loss with migraine was ascertained. The affected members did not show any aura or other neurologic symptoms during migraine attacks, indicating on a novel phenotype of syndromic hearing loss. To identify the causative gene, linkage analysis and whole-exome sequencing were performed. A novel missense variant, c.571G>A (p.(Val191Met)), was identified in the ATP1A2 gene that showed co-segregation with the phenotype in the family. In silico studies suggest that this variant causes a change in hydrophobic interactions and thereby slightly destabilize the A-domain of Na+/K+-ATPase. However, functional studies failed to show any effect of the p.(Val191Met) substitution on the catalytic rate of this enzyme. We describe a new phenotype of progressive hearing loss with migraine associated with a variant in the ATP1A2 gene. This study suggests that a variant in Na+/K+-ATPase can be involved in both migraine and hearing loss.</P>
Woo, Seonghoon,Litzius, Kai,Krü,ger, Benjamin,Im, Mi-Young,Caretta, Lucas,Richter, Kornel,Mann, Maxwell,Krone, Andrea,Reeve, Robert M.,Weigand, Markus,Agrawal, Parnika,Lemesh, Ivan,Mawass, Mohamad Nature Publishing Group 2016 Nature Materials Vol.15 No.5
<P>Magnetic skyrmions(1,2) are topologically protected spin textures that exhibit fascinating physical behaviours(1-6) and large potential in highly energy-efficient spintronic device applications(7-13). The main obstacles so far are that skyrmions have been observed in only a few exotic materials and at low temperatures(1-4,6-8), and fast current-driven motion of individual skyrmions has not yet been achieved. Here, we report the observation of stable magnetic skyrmions at room temperature in ultrathin transition metal ferromagnets with magnetic transmission soft X-ray microscopy. We demonstrate the ability to generate stable skyrmion lattices and drive trains of individual skyrmions by short current pulses along a magnetic racetrack at speeds exceeding 100m s(-1) as required for applications. Our findings provide experimental evidence of recent predictions(10-13) and open the door to room-temperature skyrmion spintronics in robust thin-film heterostructures.</P>