Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > sci.physics > #571392 > unrolled thread

Researchers have engineered trampoline resonators that may be able to sense extremely weak forces and display quantum behavior at ambient temperatures

Back to article view | Back to sci.physics

Contents

  Researchers have engineered trampoline resonators that may be able to sense extremely weak forces and display quantum behavior at ambient temperatures Sam Wormley <swormley1@gmail.com> - 2016-04-18 16:01 -0500
    Re: Researchers have engineered trampoline resonators that may be able to sense extremely weak forces and display quantum behavior at ambient temperatures jimp@specsol.spam.sux.com - 2016-04-18 21:20 +0000

#571392 — Researchers have engineered trampoline resonators that may be able to sense extremely weak forces and display quantum behavior at ambient temperatures

Researchers have engineered trampoline resonators that may be able to 
sense extremely weak forces and display quantum behavior at ambient 
temperatures
> http://physics.aps.org/articles/v9/40

> Mechanical systems, in general, are unique in their ability to couple
> to almost anything. They can be tailored to efficiently measure
> vastly different phenomena, ranging from microscopic to macroscopic
> scales. For example, placing a nanomagnet on the end of a
> micrometer-scale cantilever enables the detection of the force from
> the spin of a single electron [3]. At the other end of the spectrum,
> massive suspended mirrors incorporated in kilometer-scale
> interferometers have recently detected gravitational waves emitted
> from black holes [4]. Despite the differences in scale and physics,
> the measurement sensitivity of these technologies hinges on the
> ability to minimize mechanical dissipation. The dissipation can be
> thought of as any mechanism through which mechanical energy can be
> lost. For example, the loss could be through internal friction or by
> inadvertent radiation of vibrations into the environment. Crucially,
> and unavoidably, any source of dissipation is also a source of noise.
> It is this noise that will degrade the performance of a mechanical
> system as a sensor and obscure any evidence of quantum behavior.



-- 

sci.physics is an unmoderated newsgroup dedicated
to the discussion of physics, news from the physics
community, and physics-related social issues.

[toc] | [next] | [standalone]

#571406

Sam Wormley <swormley1@gmail.com> wrote:
> Researchers have engineered trampoline resonators that may be able to 
> sense extremely weak forces and display quantum behavior at ambient 
> temperatures

And they may just be pissing in the wind.


-- 
Jim Pennino

[toc] | [prev] | [standalone]

Back to top | Article view | sci.physics

csiph-web