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Ferronematic Fredericksz Transition
LCMRC researchers are
exploring the recently discovered ferronematic liquid crystal phase, revealing a dramatic polar
magneto-optical response to externally applied magnetic field in
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A Light-Dependent Synthetic Cortex
Here, we developed a method to generate a synthetic cortex at the membrane of synthetic cells upon blue light illumination. This is important since it allow us to control the mechanical properties of synthetic cells reversibly. When incorporated into a synthetic tissue, this method would enable mechanical patterning and defining the 3D morphology of tissue with light.
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Family Science Evenings
These
evenings offer an opportunity for K-12 students and their parents to enter the
realm of science and engineering together, such as the father and son seen here
using the Center’s Exploring
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Landau Quantization and Quasiparticle Interference in the 3D Dirac Semimetal Cd3As2
Condensed matter systems provide a rich setting to realize Dirac and Majorana
fermionic
excitations and the possibility to manipulate them in materials for potential applications.
Recently, it has been proposed that Weyl
fermions, which are chiral, massless particles, can emerge in certain bulk
materials or in topological insulator multilayers and can produce unusual
transport properties, such as charge pumping driven by a chiral anomaly. A pair
of Weyl
fermions protected by crystalline symmetry, effectively forming a massless
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Understanding & Predicting Trends in Defect Energetics in Monolayer Transition Metal Dichalcogenides
In this study,we focus on the adsorption and desorption of metal adatoms, which can modulate the electrical resistivity by several orders of magnitude. We develop material-based relationships of the adsorp-tion energy with electronic and atomic structure descriptors by examining the effects of various transition-metal adsorbates on the surface of TMDs. Our results reveal that adsorption energies of transition metals exhibit consistent trends across different TMDs (MoS2, MoSe2, WS2, WSe2)and can be explained using simple descriptors of the atomic and electronic structure. We propose several models to describe this adsorption process, providing a deeper understanding of a crucial step in the resistive switching mechanism based on the formation and dissolution of point defects.
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A responsive living material prepared by diffusion reveals extracellular enzyme activity of cyanobacteria
One of the research goals of UCSD MRSEC IRG2 included developing shape-shifting materials driven by asymmetric forces. In a recent effort, the MRSEC team demonstrated an ELM capable of shape-shifting driven by both a temperature stimulus and enzymatic mediated partial degradation of the composite material.
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Observation of a Dissipation-Induced Classical to Quantum Transition
In this work, we study a novel dynamical phase
transition of light, where photon-photon interactions and dissipation into the
environment are key aspects of the physics. Together they give rise to a
transition from a region of classical behavior into a regime where quantum
effects dominate. The transition was observed in a Jaynes-Cummings dimer built
from two coupled microwave cavities (shown in the upper picture. In this
system, photons repel each other due to the presence of nearby superconducting
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