scholarly journals Overcoming limitations of nanomechanical resonators with simultaneous resonances

2015 ◽  
Vol 107 (7) ◽  
pp. 073105 ◽  
Author(s):  
N. Kacem ◽  
S. Baguet ◽  
L. Duraffourg ◽  
G. Jourdan ◽  
R. Dufour ◽  
...  
Keyword(s):  
Nanomechanical Resonators ◽  
Simultaneous Resonances

Nanomechanical resonators

2012 ◽  
Vol 182 (4) ◽  
pp. 407 ◽  
Author(s):  
Yakov S. Greenberg ◽  
Yurii A. Pashkin ◽  
Evgeni Il'ichev
Keyword(s):  
Nanomechanical Resonators

Vibration Analysis of Single Walled Boron Nitride Nanotube Based Nanoresonators

2012 ◽  
Vol 3 (3) ◽  
Author(s):  
Mitesh B. Panchal ◽  
S. H. Upadhyay ◽  
S. P. Harsha
Keyword(s):  
Boron Nitride ◽  
Resonant Frequency ◽  
Continuum Mechanics ◽  
Boron Nitride Nanotubes ◽  
Response Analysis ◽  
Published Data ◽  
Boron Nitride Nanotube ◽  
Mass Sensor ◽  
Nanomechanical Resonators ◽  
Mass Sensitivity

In this paper, the vibration response analysis of single walled boron nitride nanotubes (SWBNNTs) treated as thin walled tube has been done using finite element method (FEM). The resonant frequencies of fixed-free SWBNNTs have been investigated. The analysis explores the resonant frequency variations as well as the resonant frequency shift of the SWBNNTs caused by the changes in size of BNNTs in terms of length as well as the attached masses. The performance of cantilevered SWBNNT mass sensor is also analyzed based on continuum mechanics approach and compared with the published data of single walled carbon nanotube (SWCNT) for fixed-free configuration as a mass sensor. As a systematic analysis approach, the simulation results based on FEM are compared with the continuum mechanics based analytical approach and are found to be in good agreement. It is also found that the BNNT cantilever biosensor has better response and sensitivity compared to the CNT as a counterpart. Also, the results indicate that the mass sensitivity of cantilevered boron nitride nanotube nanomechanical resonators can reach 10−23 g and the mass sensitivity increases when smaller size nanomechanical resonators are used in mass sensors.

scholarly journals Temperature-Dependent Nonlinear Damping in Palladium Nanomechanical Resonators

Nano Letters ◽  
2021 ◽  
Author(s):  
Shelender Kumar ◽  
Shishram Rebari ◽  
Satyendra Prakash Pal ◽  
Shyam Sundar Yadav ◽  
Abhishek Kumar ◽  
...  
Keyword(s):  
Nonlinear Damping ◽  
Temperature Dependent ◽  
Nanomechanical Resonators

scholarly journals A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part II: Experimental Validation

2007 ◽  
Vol 2007 ◽  
pp. 1-10 ◽  
Author(s):  
J. Gallego-Garrido ◽  
G. Dimitriadis ◽  
I. B. Carrington ◽  
J. R. Wright
Keyword(s):  
Experimental Test ◽  
Experimental Validation ◽  
Test Rig ◽  
New Techniques ◽  
Analysis Techniques ◽  
Simultaneous Resonances ◽  
Timing Data ◽  
Blade Tip ◽  
Using Data ◽  
Double Resonances

Blade tip timing is a technique for the measurement of vibrations in rotating bladed assemblies. In Part I of this work a class of methods for the analysis of blade tip timing data from bladed assemblies undergoing two simultaneous synchronous resonances was developed. The approaches were demonstrated using data from a mathematical simulation of tip timing data. In Part II the methods are validated on an experimental test rig. First, the construction and characteristics of the rig will be discussed. Then, the performance of the analysis techniques when applied to data from the rig will be compared and analysed. It is shown that accurate frequency estimates are obtained by all the methods for both single and double resonances. Furthermore, the recovered frequencies are used to calculate the amplitudes of the blade tip responses. The presence of mistuning in the bladed assembly does not affect the performance of the new techniques.

High-Q, in-plane modes of nanomechanical resonators operated in air

2009 ◽  
Vol 105 (9) ◽  
pp. 094315 ◽  
Author(s):  
Philip S. Waggoner ◽  
Christine P. Tan ◽  
Leon Bellan ◽  
Harold G. Craighead
Keyword(s):  
Nanomechanical Resonators ◽  
High Q

scholarly journals Time-domain response of atomically thin MoS2 nanomechanical resonators

2014 ◽  
Vol 105 (4) ◽  
pp. 041911 ◽  
Author(s):  
R. van Leeuwen ◽  
A. Castellanos-Gomez ◽  
G. A. Steele ◽  
H. S. J. van der Zant ◽  
W. J. Venstra
Keyword(s):  
Time Domain ◽  
Nanomechanical Resonators ◽  
Time Domain Response

scholarly journals A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part I: Theoretical Development

2007 ◽  
Vol 2007 ◽  
pp. 1-11 ◽  
Author(s):  
J. Gallego-Garrido ◽  
G. Dimitriadis ◽  
J. R. Wright
Keyword(s):  
Vibration Frequency ◽  
Simulated Data ◽  
Theoretical Development ◽  
Simultaneous Resonances ◽  
Timing Data ◽  
Blade Tip

Blade tip timing is a technique for the measurement of vibrations in rotating bladed assemblies. Although the fundamentals of the technique are simple, the analysis of data obtained in the presence of simultaneously occurring synchronous resonances is problematic. A class of autoregressive-based methods for the analysis of blade tip timing data from assemblies undergoing two simultaneous resonances has been developed. It includes approaches that assume both sinusoidal and general blade tip responses. The methods can handle both synchronous and asynchronous resonances. An exhaustive evaluation of the approaches was performed on simulated data in order to determine their accuracy and sensitivity. One of the techniques was found to perform best on asynchronous resonances and one on synchronous resonances. Both methods yielded very accurate vibration frequency estimates under all conditions of interest.

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