Actual Sensing Sensitivity and SNR Measurement of Optical Tweezers Based on Coulomb Force Input
Abstract Sensing sensitivity is the key performance of optical tweezers. By adjusting the frequency and magnitude of an applied Coulomb force as an input of optical tweezers, we directly measured the sensitivity and signal-to-noise ratio (SNR) of a system and indirectly calculated the actual noise m...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2022-07-01
|
| Series: | Photonic Sensors |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s13320-022-0665-6 |
| _version_ | 1818197046052519936 |
|---|---|
| author | Jiaojiao Wang Xingfan Chen Shaochong Zhu Zhenhai Fu Nan Li Huizhu Hu |
| author_facet | Jiaojiao Wang Xingfan Chen Shaochong Zhu Zhenhai Fu Nan Li Huizhu Hu |
| author_sort | Jiaojiao Wang |
| collection | DOAJ |
| description | Abstract Sensing sensitivity is the key performance of optical tweezers. By adjusting the frequency and magnitude of an applied Coulomb force as an input of optical tweezers, we directly measured the sensitivity and signal-to-noise ratio (SNR) of a system and indirectly calculated the actual noise magnitude. Combined with an output filter, the relationship between the SNR and bandwidths was studied. We established the simulation model of a system using Simulink and simulated the relationship between the SNR and magnitude of the input forces and filter bandwidths. In addition, we built an experimental system to determine the relationship between the SNR and the magnitude of the input forces and filter bandwidths. The actual minimum detectable force was measured as 1.8275×10−17 N at a 1 Hz bandwidth. The experimental results were correlated with the simulation and theoretical results, confirming the effectiveness of the proposed method and demonstrating the high sensitivity of vacuum optical tweezers as mechanical sensors. We proposed a novel method of calibration and measurement of system sensing parameters by applying an actual force that was more direct and precise than the theoretical calculation method that requires accurate fitting parameters, such as the particle radius and density. This method can be employed to analyze the system noise and phase characteristics to confirm and improve the real performance of the system. |
| first_indexed | 2024-12-12T01:43:44Z |
| format | Article |
| id | doaj.art-aa26c4a262914c5eb4e058536c45e3b0 |
| institution | Directory Open Access Journal |
| issn | 1674-9251 2190-7439 |
| language | English |
| last_indexed | 2024-12-12T01:43:44Z |
| publishDate | 2022-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Photonic Sensors |
| spelling | doaj.art-aa26c4a262914c5eb4e058536c45e3b02022-12-22T00:42:38ZengSpringerOpenPhotonic Sensors1674-92512190-74392022-07-0113111010.1007/s13320-022-0665-6Actual Sensing Sensitivity and SNR Measurement of Optical Tweezers Based on Coulomb Force InputJiaojiao Wang0Xingfan Chen1Shaochong Zhu2Zhenhai Fu3Nan Li4Huizhu Hu5State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang UniversityState Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang UniversityQuantum Sensing Center, Zhejiang LabQuantum Sensing Center, Zhejiang LabState Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang UniversityState Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang UniversityAbstract Sensing sensitivity is the key performance of optical tweezers. By adjusting the frequency and magnitude of an applied Coulomb force as an input of optical tweezers, we directly measured the sensitivity and signal-to-noise ratio (SNR) of a system and indirectly calculated the actual noise magnitude. Combined with an output filter, the relationship between the SNR and bandwidths was studied. We established the simulation model of a system using Simulink and simulated the relationship between the SNR and magnitude of the input forces and filter bandwidths. In addition, we built an experimental system to determine the relationship between the SNR and the magnitude of the input forces and filter bandwidths. The actual minimum detectable force was measured as 1.8275×10−17 N at a 1 Hz bandwidth. The experimental results were correlated with the simulation and theoretical results, confirming the effectiveness of the proposed method and demonstrating the high sensitivity of vacuum optical tweezers as mechanical sensors. We proposed a novel method of calibration and measurement of system sensing parameters by applying an actual force that was more direct and precise than the theoretical calculation method that requires accurate fitting parameters, such as the particle radius and density. This method can be employed to analyze the system noise and phase characteristics to confirm and improve the real performance of the system.https://doi.org/10.1007/s13320-022-0665-6Optical tweezerssensitivityCoulomb forceSNRSimulinksystem noise characteristic |
| spellingShingle | Jiaojiao Wang Xingfan Chen Shaochong Zhu Zhenhai Fu Nan Li Huizhu Hu Actual Sensing Sensitivity and SNR Measurement of Optical Tweezers Based on Coulomb Force Input Photonic Sensors Optical tweezers sensitivity Coulomb force SNR Simulink system noise characteristic |
| title | Actual Sensing Sensitivity and SNR Measurement of Optical Tweezers Based on Coulomb Force Input |
| title_full | Actual Sensing Sensitivity and SNR Measurement of Optical Tweezers Based on Coulomb Force Input |
| title_fullStr | Actual Sensing Sensitivity and SNR Measurement of Optical Tweezers Based on Coulomb Force Input |
| title_full_unstemmed | Actual Sensing Sensitivity and SNR Measurement of Optical Tweezers Based on Coulomb Force Input |
| title_short | Actual Sensing Sensitivity and SNR Measurement of Optical Tweezers Based on Coulomb Force Input |
| title_sort | actual sensing sensitivity and snr measurement of optical tweezers based on coulomb force input |
| topic | Optical tweezers sensitivity Coulomb force SNR Simulink system noise characteristic |
| url | https://doi.org/10.1007/s13320-022-0665-6 |
| work_keys_str_mv | AT jiaojiaowang actualsensingsensitivityandsnrmeasurementofopticaltweezersbasedoncoulombforceinput AT xingfanchen actualsensingsensitivityandsnrmeasurementofopticaltweezersbasedoncoulombforceinput AT shaochongzhu actualsensingsensitivityandsnrmeasurementofopticaltweezersbasedoncoulombforceinput AT zhenhaifu actualsensingsensitivityandsnrmeasurementofopticaltweezersbasedoncoulombforceinput AT nanli actualsensingsensitivityandsnrmeasurementofopticaltweezersbasedoncoulombforceinput AT huizhuhu actualsensingsensitivityandsnrmeasurementofopticaltweezersbasedoncoulombforceinput |