Casimir force experiments under environmental EM noises?

[pchu]

I've always been curious about how rigorous are the Casimir force measurements carried out, because a couple of years ago I read some news about people inventing perpetual motion machine which turned out to be draining power from environmental EM noises, say, radio station, wifi, 3G/4G that keep broadcasting 24/7 nowadays.

The first papers of experiments confirming Casimir force, e.g. Mohideen & Roy (1998) used a standard AFM, which, I suppose, does have requirements on EM environment and techniques to limit that influence. But for experiments using customized design, e.g. L. Tang et al. 2017 (Nature Photonics), I wonder whether there's general requirement on EM condition in every lab like this so that they need not mention it (in which case, how's the restriction?) OR environmental EM noises are totally irrelevant and will not alter the result (in which case, is there an estimation? how well is Casimir effect against EM noises?)

 

[nbryan5]

In either case, what are the techniques used to limit environmental EM noises in experiments? The environment of a lab conducting Casimir force measurements must be carefully controlled in order to ensure accurate results. Generally speaking, this includes minimizing external electromagnetic fields, controlling temperature and humidity, reducing vibrations, and shielding against external electric and magnetic fields. To minimize external electromagnetic fields, researchers typically use Faraday cages to shield against external electric and magnetic fields, and filters to reduce interference from radio frequencies. In addition, temperature and humidity must be closely monitored and controlled to ensure that the results remain consistent over time. Finally, vibration isolation systems are often used to reduce any mechanical vibrations that may affect the measurements.