Results 1 to 10 of about 345,568 (255)

Speed limit of quantum metrology [PDF]

open access: yesScientific Reports, 2023
Quantum metrology employs nonclassical systems to improve the sensitivity of measurements. The ultimate limit of this sensitivity is dictated by the quantum Cramér–Rao bound.
Yusef Maleki   +2 more
doaj   +4 more sources

The speed limit of optoelectronics [PDF]

open access: yesNature Communications, 2022
Though strong-field induced carrier excitation allows for exploring ultrafast electronic properties of a material, characterizing post-excitation dynamics is a challenge.
M. Ossiander   +17 more
doaj   +5 more sources

Breaking the photoswitch speed limit [PDF]

open access: yesNature Communications, 2023
The forthcoming generation of materials, including artificial muscles, recyclable and healable systems, photochromic heterogeneous catalysts, or tailorable supercapacitors, relies on the fundamental concept of rapid switching between two or more discrete
Grace C. Thaggard   +27 more
doaj   +2 more sources

Stronger Quantum Speed Limit for Mixed Quantum States [PDF]

open access: yesEntropy, 2023
In this paper, we derive a quantum speed limit for unitary evolution for the case of mixed quantum states using the stronger uncertainty relation for mixed quantum states.
Shrobona Bagchi   +2 more
doaj   +2 more sources

What is the speed limit of martensitic transformations? [PDF]

open access: yesScience and Technology of Advanced Materials, 2022
Structural martensitic transformations enable various applications, which range from high stroke actuation and sensing to energy efficient magnetocaloric refrigeration and thermomagnetic energy harvesting.
Stefan Schwabe   +5 more
doaj   +2 more sources

The significance of the posted minimum speed limits along interstate highways in South Carolina on traffic operation and safety

open access: yesJournal of Traffic and Transportation Engineering (English ed. Online), 2021
This paper evaluated the significance of the posted differential speed limits (DSL) on traffic safety and operation along interstate highways in South Carolina. This paper defines DSL as the difference between the posted maximum and minimum speed limits.
Saidi Siuhi   +2 more
doaj   +1 more source

Topological Speed Limit

open access: yesPhysical Review Letters, 2023
7+11 pages, 2+2 ...
Tan Van Vu, Keiji Saito
openaire   +3 more sources

Multi-robot formation motion planning method based on improved consistency model

open access: yesXi'an Gongcheng Daxue xuebao, 2021
To solve the problem that the number of mobile robots increases in the limited environment, a multi-robot motion planning method based on formation consistency was proposed.
Xun LI   +4 more
doaj   +1 more source

Ribozyme speed limits [PDF]

open access: yesRNA, 2003
The speed at which RNA molecules decompose is a critical determinant of many biological processes, including those directly involved in the storage and expression of genetic information. One mechanism for RNA cleavage involves internal phosphoester transfer, wherein the 2′-oxygen atom carries out an SN2-like nucleophilic attack on the adjacent ...
Gail Mitchell, Emilsson   +3 more
openaire   +2 more sources

Vehicle speed control using road bumps [PDF]

open access: yesTransport, 2004
Road bumps play a crucial role in enforcing speed limits, thereby preventing overspeeding of vehicles. It significantly contributes to the overall road safety objective through the prevention of accidents that lead to deaths of pedestrians and damage of ...
T. A. O. Salau, A. O. Adeyefa, S. A. Oke
doaj   +3 more sources

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