ZPE_Logo
  
Search        
  Create an account Home  ·  Topics  ·  Downloads  ·  Your Account  ·  Submit News  ·  Top 10  
Mission Statement

Modules
· Home
· Forum
· LATEST COMMENTS
· Special Sections
· SUPPORT ZPEnergy
· Advertising
· AvantGo
· Books
· Downloads
· Events
· Feedback
· Link to us
· Private Messages
· Search
· Stories Archive
· Submit News
· Surveys
· Top 10
· Topics
· Web Links
· Your Account

Who's Online
There are currently, 129 guest(s) and 0 member(s) that are online.

You are Anonymous user. You can register for free by clicking here

Events

Hot Links
Aetherometry

American Antigravity

Closeminded Science

EarthTech

ECW E-Cat World

Innoplaza

Integrity Research Institute

New Energy Movement

New Energy Times

Panacea-BOCAF

RexResearch

Science Hobbyist

T. Bearden Mirror Site

USPTO

Want to Know

Other Info-Sources
NE News Sites
AER_Network
E-Cat World
NexusNewsfeed ZPE
NE Discussion Groups
Energetic Forum
EMediaPress
Energy Science Forum
Free_Energy FB Group
The KeelyNet Blog
OverUnity Research
Sarfatti_Physics
Tesla Science Foundation (FB)
Vortex (old Interact)
Magazine Sites
Electrifying Times (FB)
ExtraOrdinary Technology
IE Magazine
New Energy Times

Interesting Links

Click Here for the DISCLOSURE PROJECT
SciTech Daily Review
NEXUS Magazine

Science and technology of the Casimir effect
Posted on Sunday, January 03, 2021 @ 14:45:15 UTC by vlad

Science
From Physics Today: Science and technology of the Casimir effect (extracts)
...
Repulsion, torque, and dynamical effects

...Those experimental and theoretical results are more than just demonstrations. They point to future work in which the Casimir force can be used to manipulate nanoscale objects. In MEMS devices, high surface-to-volume ratios often result in unwanted stiction that could be mitigated with a repulsive Casimir interaction. What’s more, by producing attractive and repulsive forces and torque at the nanoscale, one can create, at least conceptually, a micro-tractor beam for moving quantum dots, nanowires, bacteria, viruses, and other minuscule objects...


...In the dynamic Casimir effect (DCE), photons are created by a rapid change in a system parameter, such as an electromagnetic boundary condition. For example, a mirror in an optical cavity moving rapidly at a frequency f generates pairs of photons with frequency f/2 from the vacuum. Moving a mirror at relativistic speeds is no mean feat, and researchers have relied on changing another system parameter such as the index of refraction instead. The effect has been seen in superconducting circuits, a Josephson metamaterial, a Bose–Einstein condensate, and photonic crystal fibers.

How is this related to the static Casimir effect? Imagine a mirror moving slowly. The quantum fluctuations can easily keep up with the mirror, and their energy, stored in the modes of a cavity, can give rise to attractive or repulsive forces. If the mirror is accelerated to relativistic speed, the virtual particles that pop into existence get separated from their partners and produce real photon pairs. The dynamic analogue is a way to essentially mine the fluctuations by stripping photons from the pairs. In the static Casimir effect, the fluctuations produce a force; in the DCE, they produce photons...

Searching for the Casimir energy

The Casimir effect emerges from fluctuations of the quantum vacuum, but its details depend directly on the nature of the materials that make up the Casimir cavity. Those details thus involve the coupling between the electromagnetic field and the walls. In the conventional Casimir effect between two perfect conductors separated by a vacuum, the positive energy density of the modes inside the cavity is less than that outside the cavity. An important question is, Can that difference in energy—the Casimir energy—be directly detected, and if so can it be exploited to reveal any novel physical phenomena?

In 1988 Michael Morris, Kip Thorne, and Ulvi Yurtsever speculated that this Casimir energy vacuum could be used to stabilize the existence of a wormhole and thus lead to the possibility of superluminal travel.12 The Casimir force also has been invoked in connection with the cosmological-constant problem—the so-called vacuum catastrophe—and dark energy in the universe. But the wide discrepancy between the estimates of the background energy density of the universe and the energy density that would result from naïve calculations of the quantum vacuum energy fluctuations remains unresolved.

Furthermore, the Casimir effect can be formulated and Casimir forces computed without reference to zero-point fluctuations. Hence, experimentalists hope to be able to measure a physical effect that can be attributed unambiguously to the existence of the Casimir energy in order to confirm the existence of what has to date simply been used as a theorist’s tool.

...the search for the Casimir energy is an active area of research.

Although daunting, such experiments may bear on other unresolved issues of fundamental physics. Indeed, if the Casimir energy exists and can alter phenomena such as the temperature at which a phase transition occurs, then an entirely new range of devices and technologies may emerge...
...

For a short survey of the first 60 years of research on the Casimir effect, see the article by Steve Lamoreaux, Physics Today, February 2007, page 40.
---------



 
Login
Nickname

Password

Security Code: Security Code
Type Security Code

Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.

Related Links
· More about Science
· News by vlad


Most read story about Science:
100 miles on 4 ounces of water?


Article Rating
Average Score: 5
Votes: 2


Please take a second and vote for this article:

Excellent
Very Good
Good
Regular
Bad


Options

 Printer Friendly Printer Friendly


"Science and technology of the Casimir effect" | Login/Create an Account | 0 comments
The comments are owned by the poster. We aren't responsible for their content.

No Comments Allowed for Anonymous, please register

 

All logos and trademarks in this site are property of their respective owner. The comments are property of their posters, all the rest © 2002-2016 by ZPEnergy. Disclaimer: No content, on or affiliated with ZPEnergy should be construed as or relied upon as investment advice. While every effort is made to ensure that the information contained on ZPEnergy is correct, the operators of ZPEnergy make no warranties as to its accuracy. In all respects visitors should seek independent verification and investment advice.
Keywords: ZPE, ZPF, Zero Point Energy, Zero Point Fluctuations, ZPEnergy, New Energy Technology, Small Scale Implementation, Energy Storage Technology, Space-Energy, Space Energy, Natural Potential, Investors, Investing, Vacuum Energy, Electromagnetic, Over Unity, Overunity, Over-Unity, Free Energy, Free-Energy, Ether, Aether, Cold Fusion, Cold-Fusion, Fuel Cell, Quantum Mechanics, Van der Waals, Casimir, Advanced Physics, Vibrations, Advanced Energy Conversion, Rotational Magnetics, Vortex Mechanics, Rotational Electromagnetics, Earth Electromagnetics, Gyroscopes, Gyroscopic Effects

PHP-Nuke Copyright © 2005 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.