Effect of thermal noise from the load on the frequency stability of resonant oscillators

1982 ◽  
Vol 25 (1) ◽  
pp. 43-45
Author(s):  
F. S. Rusin ◽  
V. P. Kostromin
Keyword(s):  
Thermal Noise ◽  
Frequency Stability ◽  
Resonant Oscillators

scholarly journals Contribution of thermal noise to frequency stability of rigid optical cavity via Hertz-linewidth lasers

2006 ◽  
Vol 73 (3) ◽  
Author(s):  
Mark Notcutt ◽  
Long-Sheng Ma ◽  
Andrew D. Ludlow ◽  
Seth M. Foreman ◽  
Jun Ye ◽  
...  
Keyword(s):  
Thermal Noise ◽  
Optical Cavity ◽  
Frequency Stability

RF Spectrum of Thermal Noise and Frequency Stability of a Microwave Cavity-Oscillator

1984 ◽  
Vol 32 (12) ◽  
pp. 1565-1572 ◽  
Author(s):  
B. Villeneuve ◽  
P. Tremblay ◽  
A. Michaud ◽  
M. Tetu
Keyword(s):  
Thermal Noise ◽  
Frequency Stability ◽  
Microwave Cavity ◽  
Rf Spectrum

Ultra-spatially resolved synchrotron powered FT-IR microspectroscopy of individual cells of biological material

1995 ◽  
Vol 53 ◽  
pp. 884-885
Author(s):  
David L. Wetzel ◽  
John A. Reffner ◽  
Gwyn P. Williams
Keyword(s):  
Thermal Noise ◽  
Spot Size ◽  
Acquisition Time ◽  
Thermal Source ◽  
Signal To Noise ◽  
Spatially Resolved ◽  
Good Spatial Resolution ◽  
Small Spot ◽  
Ft Ir ◽  
Ir Microspectroscopy

Synchrotron radiation is 100 to 1000 times brighter than a thermal source such as a globar. It is not accompanied with thermal noise and it is highly directional and nondivergent. For these reasons, it is well suited for ultra-spatially resolved FT-IR microspectroscopy. In efforts to attain good spatial resolution in FT-IR microspectroscopy with a thermal source, a considerable fraction of the infrared beam focused onto the specimen is lost when projected remote apertures are used to achieve a small spot size. This is the case because of divergence in the beam from that source. Also the brightness is limited and it is necessary to compromise on the signal-to-noise or to expect a long acquisition time from coadding many scans. A synchrotron powered FT-IR Microspectrometer does not suffer from this effect. Since most of the unaperatured beam’s energy makes it through even a 12 × 12 μm aperture, that is a starting place for aperture dimension reduction.

EFFECT OF CELLULAR MEMBRANE RESISTIVITY INHOMOGENEITY ON THE THERMAL NOISE-LIMIT

2015 ◽  
Vol 11 (3) ◽  
pp. 3171-3183
Author(s):  
Gyula Vincze
Keyword(s):  
Field Strength ◽  
Thermal Noise ◽  
Cellular Membrane ◽  
Thermal Limit ◽  
Low Frequencies ◽  
Membrane Resistivity ◽  
Noise Limit ◽  
The Asymmetry ◽  
Characteristic Field

Our objective is to generalize the Weaver-Astumian (WA) and Kaune (KA) models of thermal noise limit to the case ofcellular membrane resistivity asymmetry. The asymmetry of resistivity causes different effects in the two models. In the KAmodel, asymmetry decreases the characteristic field strength of the thermal limit over and increases it below the breakingfrequency (10  m), while asymmetry decreases the spectral field strength of the thermal noise limit at all frequencies.We show that asymmetry does not change the character of the models, showing the absence of thermal noise limit at highand low frequencies in WA and KA models, respectively.

Miniaturization and Optimization of Nanoscale Resonant Oscillators

2013 ◽  
Author(s):  
Y. Fainman ◽  
C. Tu ◽  
V. Lomakin ◽  
B. Slutsky ◽  
M. Nezhad
Keyword(s):  
Resonant Oscillators
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