Results 61 to 70 of about 6,087,560 (207)
Energy efficient continuous flow ash lockhopper [PDF]
, 1989 The invention relates to an energy efficient continuous flow ash lockhopper, or other lockhopper for reactor product or byproduct. The invention includes an ash hopper at the outlet of a high temperature, high pressure reactor vessel containing heated ...
Collins, Earl R., Jr. +2 more
core +1 more source
Nature Communications, 2018 Up to now, all iron-based high-T c superconductors contain a square iron lattice. Here, Wang et al. report the observation of superconductivity in an iron honeycomb lattice accompanied with pressure-driven spin-crossover, in-plane lattice collapse and ...
Yonggang Wang +14 more
doaj +1 more source
NV center magnetometry up to 130 GPa as if at ambient pressure [PDF]
arXiv, 2023 Engineering a layer of nitrogen-vacancy (NV) centers on the tip of a diamond anvil creates a multipurpose quantum sensors array for high pressure measurements, especially for probing magnetic and superconducting properties of materials. Expanding this concept above 100 GPa appears to be a substantial challenge.
arxiv
Quantum optomechanics of a multimode system coupled via photothermal and radiation pressure force
, 2012 We provide a full quantum description of the optomechanical system formed by a Fabry-Perot cavity with a movable micro-mechanical mirror whose center-of-mass and internal elastic modes are coupled to the driven cavity mode by both radiation pressure and ...
A. R. Bahrampour +5 more
core +1 more source
Manipulation of nonlinear optical responses in layered ferroelectric niobium oxide dihalides
Nature Communications, 2023 Realization of highly tunable second-order nonlinear optical responses, e.g., second-harmonic generation and bulk photovoltaic effect, is critical for developing modern optical and optoelectronic devices.
Liangting Ye +16 more
doaj +1 more source
The Static Center of Pressure Sensitivity: a further Criterion to assess Contact Stability and Balancing Controllers [PDF]
arXiv, 2016 Legged locomotion has received increasing attention from the robotics community. In this respect, contact stability plays a critical role in ensuring that robots maintain balance, and it is a key element for balancing and walking controllers. The Center of Pressure is a contact stability criterion that defines a point that must be kept strictly inside ...
arxiv
Quantum gravitational dust collapse does not result in a black hole [PDF]
, 2014 Quantum gravity suggests that the paradox recently put forward by Almheiri et. al. (AMPS) can be resolved if matter does not undergo continuous collapse to a singularity but condenses on the apparent horizon.
Vaz, Cenalo
core +3 more sources
Narrowing band gap chemically and physically: conductive dense hydrocarbon
Communications MaterialsEnhancing intermolecular interactions can reduce the band gap energy of organic molecules. Consequently, certain polycyclic aromatic hydrocarbons – typically wide-band-gap insulators – may undergo insulator-to-metal transitions under simple compression ...
Takeshi Nakagawa +16 more
doaj +1 more source
Physical Treatments, 2014 Purpose: Mechanical loading is said to be an important factor in the development of low back pain (LBP). One of the main concerns in manual material handling (MMH) tasks is lifting loads, as this activity is present in most jobs.
Maryam Saba +3 more
doaj
Equation of state and elastic properties of face-centered-cubic FeMg alloy at ultrahigh pressures from first-principles [PDF]
, 2009 We have calculated the equation of state and elastic properties of face-centered cubic Fe and Fe-rich FeMg alloy at ultrahigh pressures from first principles using the Exact Muffin-Tin Orbitals method. The results show that adding Mg into Fe influences strongly the equation of state, and cause a large degree of softening of the elastic constants, even ...
arxiv +1 more source