Results 141 to 150 of about 20,168 (294)

Parity‐Dependent THz Harmonic Generation in Electrically Pumped Micro‐Lasers Exploiting Topological Insulator–Metamaterial Gratings

open access: yesAdvanced Materials, EarlyView.
Topological insulator–metamaterials integrated with electrically driven terahertz quantum cascade lasers enable parity‐dependent harmonic generation. Bulk‐dominated Bi2Se3 favors third‐harmonic emission at 9.96 THz, whereas topological‐surface‐state‐dominated Bi2Se3, Bi2Te3, and (Bi,Sb)2Te3 generate strong second harmonics near 6.5 THz.
Alessandra Di Gaspare   +9 more
wiley   +1 more source

Soft and Transient Bioelectronics Enabled by Polymer‐Free Ti3C2Tx MXene Hydrogels

open access: yesAdvanced Materials, EarlyView.
We present Ti3C2Tx MXene hydrogel (MXgel) bioelectronics, a soft, flexible, and fully transient platform for high‐fidelity neural recording and stimulation. MXgel bioelectronics exhibit exceptional electrical conductivities, low electrochemical impedances, and high charge injection capacities.
Raghav Garg   +15 more
wiley   +1 more source

"Dripping Spring in Long Canyon"

open access: yes, 1920
Photograph from album page; a group of unidentified people standing on top of a rock formation surrounded by trees and brushes; the people are hardly recognizable ( overexposed image ) and it is unclear what they are doing; ( inscription on album page ...

core  

Heat Transfer Characteristics of an Electric Motor with Oil-Dripping Cooling under Overload Conditions

open access: yes
The continuously increasing energy density of electric motors to match the performance of electric vehicles with internal-combustion-engine vehicles demands an advanced cooling strategy.
Kunal Sandip Garud   +3 more
core   +1 more source

Biohybrid Crawling Robot With Spiral‐Spring Backbone and Inclined Legs for Enhanced Locomotion

open access: yesAdvanced Materials, EarlyView.
We present a biohybrid crawling robot integrating a muscle ring with a flexible skeleton combining two complementary structural elements. The spiral‐spring backbone enables large‐amplitude bending without compromising axial stability, while outward‐inclined legs with unequal front–rear lengths effectively convert deformation into directional strides ...
Tomohiro Morita   +2 more
wiley   +1 more source

The Effect of Pressurized Carbon Dioxide Lavage on Osteochondral Allograft. [PDF]

open access: yesOrthop J Sports Med
Atzmon R   +8 more
europepmc   +1 more source

Effects of geometrical parameters on dripping from cylindrical nozzles

open access: yes, 2004
Dripping from steel nozzles with tip of different forms is analysed. It is found that patterns of bifurcation diagrams strongly depend upon the geometrical parameters at the exit.
RENNA, Luigi   +2 more
core  

Seamless Mechanical Programming Through Hybrid Epoxy–Acrylate Printing for Soft–Rigid Robots

open access: yesAdvanced Materials, EarlyView.
Hybrid epoxy‐acrylate printing enables seamless fabrication of soft–rigid robotic systems with covalently integrated interfaces and functionally graded mechanics. Grayscale exposure expands the accessible material space, enabling spatially programmed actuation through patterned stiffness while revealing the mechanics and durability of continuously ...
David C. Bershadsky   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy