Negative Stiffness Induced and Controlled by Constriction
Structures with negative stiffness can be stabilized by constriction of external displacement. Furthermore, constriction can make a conventional positive stiffness material exhibit negative stiffness, either bidirectional or unidirectional (shown in the figure).
Elena Pasternak, Arcady V. Dyskin
wiley +1 more source
Research on the low-frequency band gap characteristics of longitudinal vibration of ship shafting based on bionic quasi-zero stiffness metamaterials. [PDF]
Yang Z, Gao X, Li L, Rao Z.
europepmc +1 more source
A study of a free convective boundary layer using a parcel‐based Lagrangian model
We study the development of a convective boundary layer forced by surface heating and growing into a stably stratified atmosphere above. We compare our results with several recent comprehensive direct numerical simulation (DNS) studies and find broad agreement, and often close quantitative agreement, despite fundamental differences in the numerical ...
Samuel Wallace +3 more
wiley +1 more source
High-efficiency femtosecond laser fabrication of graphene-hybrid planar micro-supercapacitors with micro/nanostructured electrodes. [PDF]
Zhang Y +15 more
europepmc +1 more source
We exploit the Field Experiment on Sub‐mesoscale Spatio‐Temporal Variability in Lindenberg (FESSTVaL) to compare the performance of an NWP model at sub‐km resolutions with a traditional LES model. Focusing on clear‐sky ABL turbulence (June 14), shallow convective clouds and surface radiation (June 27), and deep convective cold pools (June 29), we find ...
Mirjana Sakradzija +8 more
wiley +1 more source
Designing the Self-Assembly of Disordered Materials Via Color Frustration. [PDF]
Neophytou A, Sciortino F, Russo J.
europepmc +1 more source
Impact of small‐scale gravity waves on tracer transport
We extend a gravity wave (GW) parametrization to calculate the tracer transport due to the GW–Stokes drift and next‐order effects, where the approach is validated by comparing coarse‐resolution simulations with parametrized GWs to high‐resolution, wave‐resolving reference simulations.
Irmgard Knop +2 more
wiley +1 more source
Decoupling metasurface parameters for independent Stokes polarization control via generalized lattice. [PDF]
Cheng Z, Zhou Z, Wang Z, Wang Y, Yu C.
europepmc +1 more source
Optimal Accelerated Life Testing Design Under Constrained Resources Using Double Deep Q‐Learning
ABSTRACT Accelerated life tests (ALTs) are essential tools for estimating product reliability under high‐stress conditions, allowing failure data to be collected in reduced timeframes. However, planning effective ALT configurations is a complex task that requires selecting stress levels, test durations, and unit allocations while accounting for limited
Allan Jonathan da Silva +3 more
wiley +1 more source
Counting function estimates for coherent frames and Riesz sequences. [PDF]
Papageorgiou E, van Velthoven JT.
europepmc +1 more source

