Results 81 to 90 of about 102,528 (248)

Experiments in vortex avalanches

open access: yes, 2004
Avalanche dynamics is found in many phenomena spanning from earthquakes to the evolution of species. It can be also found in vortex matter when a type II superconductor is externally driven, for example, by increasing the magnetic field.
Abrikosov, A. A.   +86 more
core   +1 more source

Phonon Engineering in Ultrathin Sn Films

open access: yesAdvanced Materials Interfaces, EarlyView.
When embedded in multilayer structures, ultrathin Sn layers demonstrate strongly modified vibrational density of states (VDOS). This allows engineering a drastic increase of the Lamb‐Mössbauer factor fLM$f_{\text{LM}}$ and thereby of the cross‐section for coherent excitation of the ultrasharp nuclear resonance of 119Sn$^{119}{\rm Sn}$. This enables the
Sven Velten   +9 more
wiley   +1 more source

Theoretical Studies on InGaAs/InAlAs SAGCM Avalanche Photodiodes

open access: yesNanoscale Research Letters, 2018
In this paper, we provide a detailed insight on InGaAs/InAlAs separate absorption, grading, charge, and multiplication avalanche photodiodes (SAGCM APDs) and a theoretical model of APDs is built.
Siyu Cao   +8 more
doaj   +1 more source

Kinetic modelling of runaway electron avalanches in tokamak plasmas

open access: yes, 2015
Runaway electrons (REs) can be generated in tokamak plasmas if the accelerating force from the toroidal electric field exceeds the collisional drag force due to Coulomb collisions with the background plasma.
Decker, J.   +5 more
core   +1 more source

Multi‐Organelle Stress‐Induced Paraptosis by a ROS‐Amplifying Nanocatalyst for Enhanced Cancer Immunotherapy

open access: yesAdvanced Science, EarlyView.
The engineered TF‐Fe@LC nanoplatform programs paraptotic death via multipath ROS amplification that disrupts redox homeostasis, provoking mitochondrial dysfunction, autophagic blockade, and ER stress. This caspase‐independent process elicits robust immunogenic cell death, combining with αPD‐L1 to activate systemic CD8+ T‐cell immunity and suppress ...
Zhe Yu   +9 more
wiley   +1 more source

Piling and avalanches of magnetized particles

open access: yes, 2004
We performed computer simulations based on a two-dimensional Distinct Element Method to study granular systems of magnetized spherical particles. We measured the angle of repose and the surface roughness of particle piles, and we studied the effect of ...
D. E. Wolf   +6 more
core   +1 more source

Surface Plasmon Enhanced Photoluminescence of Carbon Dots Formed In Situ on Silver Gratings

open access: yesAdvanced Science, EarlyView.
Carbon emitters formed in situ on a silver grating via plasmonic catalysis yield enhanced spontaneous emission by preferential radiative decay into surface plasmons. Enhancement manifests as emission exhibiting characteristics of coherence (polarization, directionality), and accelerated lifetimes of ∼30 ps, yielding Purcell factors of ∼70.
Maryam Sadat Amiri Naeini   +5 more
wiley   +1 more source

Advanced Cryptography Using Nanoantennas in Wireless Communication

open access: yesInformation
This work presents an end-to-end encryption–decryption framework for securing electromagnetic signals processed through a nanoantenna. The system integrates amplitude normalization, uniform quantization, and Reed–Solomon forward error correction with key
Francisco Alves   +3 more
doaj   +1 more source

A novel full-chip afterpulsing evaluation technique for 116 × 160 Ge-on-Si SPAD array [PDF]

open access: yesAPL Photonics
This Letter presents a novel on-chip afterpulsing characterization method demonstrated using gated-mode short-wave infrared single photon avalanche diode arrays, effectively overcoming the measurement limitations of conventional methods.
Chi-En Chen   +9 more
doaj   +1 more source

Vegetation effects on avalanche dynamics

open access: yes, 2015
Avalanches endanger people, destroy their property and frequently bury traffic routes in deep snow. Dense forest is an effective, economic and ecologic avalanche mitigation measure. Vegetation in the release area and in the avalanche path can prevent the gliding motion of snow, affects the avalanche flow dynamics and leads to deceleration and runout ...
openaire   +2 more sources

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