[Searches for Massive Neutrinos with Mechanical Quantum Sensors](https://journals.aps.org/prxquantum/abstract/10.1103/PRXQuantum.4.010315) Scientists can now use tiny mechanical sensors, weighing just femtograms (a quadrillionth of a gram), to detect and measure things at the quantum level. If the sensor contains certain isotopes that undergo nuclear decay, researchers can measure the recoil of the sensor after the decay and figure out the total momentum of all the particles that were emitted. This can help detect particles that may not be detected by traditional methods. For example, by measuring the momentum of emitted neutrinos from weak nuclear decays, scientists can better study them. The researchers propose using a super-sensitive, nanometer-sized, levitated sensor to search for heavy sterile neutrinos in the keV-MeV mass range with a greater sensitivity than current lab equipment. They also suggest that in the future, these mechanical sensors could be sensitive enough to accurately measure the mass of light neutrino states. @mr27.near, @littlelion.near, are you guys impressed?