A Princeton team uncovered a surprising chiral quantum state in a supposedly non-chiral material, shedding light on elusive symmetry-breaking effects and opening doors to new quantum technologies. Chirality, the property of being different from…
Category: 4. Physics
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Cracking the Quantum Mirror: Hidden Chirality Found in a Symmetrical Crystal
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Ghana Reaps the Fruits of Science Investment
The project to refurbish the GRAO’s dish into a new telescope began in 2010, and I’ve been part of the project since 2012. The GRAO used to be a telecommunications station, but it and many other dishes had been abandoned, going unused for…
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MIT Snaps Stunning First Photos of Atoms Interacting in Open Space
MIT scientists have snapped the first-ever images of individual atoms interacting freely in space, making visible the elusive quantum effects that govern their behavior. Using a unique technique that briefly traps atoms in place with a lattice of…
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Optical and acoustic plasmons in the layered material Sr2RuO4
“Strange” metals are at present one of the most interesting research fields in solid state physics1. Due to the strong on-site interaction between their charge carriers, they show a deviation from a Fermi-liquid behavior, e.g., they do not…
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The effect of non-local coupling of fibroblasts on pacing dynamics in a 2D tissue: a simulation study
Camelliti, P., Borg, T. K. & Kohl, P. Structural and functional characterisation of cardiac fibroblasts. Cardiovasc. Res. 65, 40–51 (2005).
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Kohl, P. &…
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Observation of nonlinear input-output power characteristic of light emission from an electrically-biased metallic photonic crystal
Sample and device fabrication
The sample structure used in this experiment has been reported earlier11,24. Briefly, it consists of a micro-cavity fabricated on top of a 3D tungsten-PC (W-PC) on a four-inch silicon wafer. The PC-cavity structure…
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Exact solutions of Dirac equation for hydrogen atom using the linear combination of orthogonal Laguerre basis functions
The Dirac Hamiltonian \(H\) for 3D hydrogen atom reads33.
$$H = c\vec{\alpha } \cdot \vec{p} + (\beta – 1)c^{2} + V(r)$$
(1)
where \(\vec{p} = – i\nabla\) is the momentum operator, \(\vec{\alpha }\) and
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Anisotropic DLVO-like interaction for charge patchiness in colloids and proteins
Electrostatics is omnipresent in soft matter and biology since colloids and proteins dispersed in an electrolytic medium are inevitably charged due to the dissociation of ionizable groups and/or preferential adsorption of ions from the…
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Rapid flipping between electrolyte and metallic states in ammonia solutions of alkali metals
Density of states and spherical band structure
We designed the simulation framework in a way that allowed us to capture the two principal—and at the same time opposing—aspects of EMT. On the one hand, we aimed for the size of the unit cell to…
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Challenging common notions on how eggs break and the role of strength versus toughness
Egg selection and measurement
We purchased USDA Grade AA Cage Free Large Eggs in cartons of 60 eggs from Costco under the Kirkland Signature brand. Prior to testing, eggs were allowed to reach room temperature. We inspected eggs for any potential…
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