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searching for Lock-in amplifier 13 found (52 total)

Scanning joule expansion microscopy (2,699 words) [view diff] exact match in snippet view article find links to article

and the frequency characteristics of the cantilever arrangement. A lock-in amplifier is specially tuned to the Joule heating frequency for detecting only

Diazenylium (1,484 words) [view diff] exact match in snippet view article find links to article

molecules, to be shifted back and forth in frequency space, so a lock-in amplifier could be used to observe the spectra of just the ions in the discharge

Vibrating-sample magnetometer (844 words) [view diff] case mismatch in snippet view article find links to article

system Calibrate the system Optimize the system for M Calibrate the Lock-In Amplifier Take measurements and record data Magnetic field must be strong enough

Photothermal spectroscopy (1,120 words) [view diff] exact match in snippet view article find links to article

through a mechanical chopper or regulated with a function generator. A lock-in amplifier is then used to measure deflections found at the modulation frequency

Double-sideband suppressed-carrier transmission (1,269 words) [view diff] exact match in snippet view article find links to article

generation and demodulation instrument is described as side application of a commercial lock-in amplifier in Double-sideband Suppressed-carrier Modulation.

Optical power meter (1,820 words) [view diff] no match in snippet view article find links to article

light chopping is synchronized with an appropriate synchronous (or "lock-in") amplifier, further sensitivity gains are achieved. In practice, such instruments

Electrical impedance myography (2,523 words) [view diff] exact match in snippet view article find links to article

muscles. A suitable impedance analyzer can also be custom built using a lock-in amplifier to produce the signal and a low-capacitance probe, such as the Tektronix

Focal molography (1,347 words) [view diff] case mismatch in snippet view article find links to article

by Optical Diffraction—Part I. The Concept of a Spatial Affinity Lock-in Amplifier". Sensors. 21 (2): 469. Bibcode:2021Senso..21..469F. doi:10.3390/s21020469

Scanning tunneling spectroscopy (3,641 words) [view diff] exact match in snippet view article find links to article

The A.C. component of the tunneling current is recorded using a lock-in amplifier, and the component in-phase with the tip-sample bias modulation gives

Magnetic circular dichroism (4,682 words) [view diff] no match in snippet view article find links to article

corresponds to the modulation frequency, ω. This voltage is detected by the lock in amplifier, which receives its reference frequency, ω, directly from the PEM

Atomic clock (15,742 words) [view diff] exact match in snippet view article find links to article

S.; Parikh, K. S.; Bandi, Thejesh N. (1 December 2021). "Digital lock-in amplifier for space rubidium atomic clock". Review of Scientific Instruments

Bimodal atomic force microscopy (3,230 words) [view diff] exact match in snippet view article find links to article

and the changes of its amplitude and phase shift are tracked by a lock-in amplifier. The main feedback loop keeps constant the amplitude, at a certain

Developmental bioelectricity (17,264 words) [view diff] exact match in snippet view article find links to article

difference at the frequency of the vibration, efficiently filtered by a lock-in amplifier that boosts probe's sensitivity. The vibrating ion-selective microelectrode