Results 41 to 50 of about 47,479 (264)

Nematic phase transitions in two-dimensional systems

Condensed Matter Physics, 2005
Simulations of nematic-isotropic transition of liquid crystals in two dimensions are performed using an O(2) vector model characterized by non linear nearest neighbour spin interaction governed by the fourth Legendre polynomial P4.
B.Berche, R.Paredes
doaj   +1 more source

Loss-Driven Topological Transitions in Lasing

Physical Review Letters, 2022
We experimentally observe lasing in a hexamer plasmonic lattice and find that when tuning the scale of the unit cell, the polarization winding of the emission changes. By a theoretical analysis we identify the lasing modes as quasi bound states in continuum (quasi-BICs) of topological charges of zero, one or two.
Heilmann, Rebecca, Arjas, Kristian, Aronen, Kerttu, Martikainen, Jani Petri, Törmä, Päivi, Salerno, Grazia   +6 more
openaire   +6 more sources

Topological origin of the protein folding transition

Physical Review E, 2022
In this paper, a geometrical and thermodynamical analysis of the global properties of the potential energy landscape of a minimalistic model of a polypeptide is presented. The global geometry of the potential energy landscape is supposed to contain relevant information about the properties of a given sequence of amino acids, that is, to discriminate ...
Loris Di Cairano, Riccardo Capelli, Ghofrane Bel-Hadj-Aissa, Marco Pettini   +3 more
openaire   +5 more sources

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

FEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança, Eline L. Jansen, Jorine M. Eeftens   +2 more
wiley   +1 more source

Topological interpretation of extremal and Davies-type phase transitions of black holes

Physics Letters B
Topological arguments are currently being used as a novel scheme to discern the properties of black holes while ignoring their detailed structure and specific field equations.
Krishnakanta Bhattacharya, Kazuharu Bamba, Douglas Singleton   +2 more
doaj   +1 more source

Systematic study on stanene bulk states and the edge states of its zigzag nanoribbon

New Journal of Physics, 2017
Stanene, as a counterpart of graphene, but with much larger spin–orbit coupling (SOC) strength, has recently been synthesized experimentally. Based on first principle calculations and an effective model, we systematically study the electronic and ...
Botao Fu, M Abid, Cheng-Cheng Liu
doaj   +1 more source

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

Molecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce, Simone Bini, Marialuisa Sponziello, Giorgio Grani, Giulia Fiscon, Paola Paci, Lorenzo Farina, Rosa Falcone, Valentina Maggisano, Sebastiano Filetti, Cosimo Durante, Antonella Verrienti   +11 more
wiley   +1 more source

The phase transitions between Zn×Zn bosonic topological phases in 1+1D, and a constraint on the central charge for the critical points between bosonic symmetry protected topological phases

Nuclear Physics B, 2017
The study of continuous phase transitions triggered by spontaneous symmetry breaking has brought revolutionary ideas to physics. Recently, through the discovery of symmetry protected topological phases, it is realized that continuous quantum phase ...
Lokman Tsui, Yen-Ta Huang, Hong-Chen Jiang, Dung-Hai Lee   +3 more
doaj   +1 more source

Topological phase transition at the interface of a topological with a conventional insulator

Journal of Physics: Condensed Matter, 2020
Abstract We study the topological states which appear at the interface between a topological insulator (TI) and a conventional insulator (CI) using effective Hamiltonians which accurately describe the band structure of the Bi 2 Se 3 ...
Niraj Aryal, Efstratios Manousakis
openaire   +3 more sources

Developmental programmes drive cellular plasticity, disease progression and therapy resistance in lung adenocarcinoma

Molecular Oncology, EarlyView.
This study shows that lung adenocarcinomas exploit developmental branching morphogenesis to acquire a therapy resistant basal‐like tumour cell state. This process was found to be regulated by combined TP53 loss‐of‐function and type‐I interferon signalling, identifying a novel axis for biomarker and therapeutic target discovery.
Kamila J Bienkowska, Stephany Gallardo, Nur S. Zainal, Leena Arora, Matthew Ellis, Maria‐Antoinette Lopez, Judith Austine, Sai Pittla, Serena J Chee, Aiman Alzetani, Emily C Shaw, Christian H Ottensmeier, Gareth J Thomas, Christopher J Hanley   +13 more
wiley   +1 more source