Mass and Force Sensing of an Adsorbate on a Beam Resonator Sensor
The mass sensing superiority of a micro-/nano-mechanical resonator sensor over conventional mass spectrometry has been, or at least is being firmly established. Because the sensing mechanism of a mechanical resonator sensor is the shifts of resonant frequencies, how to link the shifts of resonant fr...
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-06-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/15/7/14871 |
| _version_ | 1828149794902638592 |
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| author | Yin Zhang Ya-Pu Zhao |
| author_facet | Yin Zhang Ya-Pu Zhao |
| author_sort | Yin Zhang |
| collection | DOAJ |
| description | The mass sensing superiority of a micro-/nano-mechanical resonator sensor over conventional mass spectrometry has been, or at least is being firmly established. Because the sensing mechanism of a mechanical resonator sensor is the shifts of resonant frequencies, how to link the shifts of resonant frequencies with the material properties of an analyte formulates an inverse problem. Besides the analyte/adsorbate mass, many other factors, such as position and axial force, can also cause the shifts of resonant frequencies. The in situ measurement of the adsorbate position and axial force is extremely difficult if not impossible, especially when an adsorbate is as small as a molecule or an atom. Extra instruments are also required. In this study, an inverse problem of using three resonant frequencies to determine the mass, position and axial force is formulated and solved. The accuracy of the inverse problem solving method is demonstrated, and how the method can be used in the real application of a nanomechanical resonator is also discussed. Solving the inverse problem is helpful to the development and application of a mechanical resonator sensor for two reasons: reducing extra experimental equipment and achieving better mass sensing by considering more factors. |
| first_indexed | 2024-04-11T21:34:30Z |
| format | Article |
| id | doaj.art-01a9f9246a6b41bc946c7314dbe3a575 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T21:34:30Z |
| publishDate | 2015-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-01a9f9246a6b41bc946c7314dbe3a5752022-12-22T04:01:47ZengMDPI AGSensors1424-82202015-06-01157148711488610.3390/s150714871s150714871Mass and Force Sensing of an Adsorbate on a Beam Resonator SensorYin Zhang0Ya-Pu Zhao1State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaThe mass sensing superiority of a micro-/nano-mechanical resonator sensor over conventional mass spectrometry has been, or at least is being firmly established. Because the sensing mechanism of a mechanical resonator sensor is the shifts of resonant frequencies, how to link the shifts of resonant frequencies with the material properties of an analyte formulates an inverse problem. Besides the analyte/adsorbate mass, many other factors, such as position and axial force, can also cause the shifts of resonant frequencies. The in situ measurement of the adsorbate position and axial force is extremely difficult if not impossible, especially when an adsorbate is as small as a molecule or an atom. Extra instruments are also required. In this study, an inverse problem of using three resonant frequencies to determine the mass, position and axial force is formulated and solved. The accuracy of the inverse problem solving method is demonstrated, and how the method can be used in the real application of a nanomechanical resonator is also discussed. Solving the inverse problem is helpful to the development and application of a mechanical resonator sensor for two reasons: reducing extra experimental equipment and achieving better mass sensing by considering more factors.http://www.mdpi.com/1424-8220/15/7/14871mechanical resonator sensorresonant frequencyinverse problembeam |
| spellingShingle | Yin Zhang Ya-Pu Zhao Mass and Force Sensing of an Adsorbate on a Beam Resonator Sensor Sensors mechanical resonator sensor resonant frequency inverse problem beam |
| title | Mass and Force Sensing of an Adsorbate on a Beam Resonator Sensor |
| title_full | Mass and Force Sensing of an Adsorbate on a Beam Resonator Sensor |
| title_fullStr | Mass and Force Sensing of an Adsorbate on a Beam Resonator Sensor |
| title_full_unstemmed | Mass and Force Sensing of an Adsorbate on a Beam Resonator Sensor |
| title_short | Mass and Force Sensing of an Adsorbate on a Beam Resonator Sensor |
| title_sort | mass and force sensing of an adsorbate on a beam resonator sensor |
| topic | mechanical resonator sensor resonant frequency inverse problem beam |
| url | http://www.mdpi.com/1424-8220/15/7/14871 |
| work_keys_str_mv | AT yinzhang massandforcesensingofanadsorbateonabeamresonatorsensor AT yapuzhao massandforcesensingofanadsorbateonabeamresonatorsensor |