Kourosh Kalayeh, John O L DeLancey, James A Ashton-Miller, J Brian Fowlkes
{"title":"Mechanically-induced fiducial marker system for event-based synchronization of independent recording instruments.","authors":"Kourosh Kalayeh, John O L DeLancey, James A Ashton-Miller, J Brian Fowlkes","doi":"10.1088/1361-6501/ae92a4","DOIUrl":"10.1088/1361-6501/ae92a4","url":null,"abstract":"<p><p>Many experimental and clinical measurements require simultaneous acquisition from independent instruments that do not share a clock. We describe a device that enables such pairings via event-based synchronization: an electrical trigger from one instrument drives an Arduino-controlled stepper actuator that produces a brief mechanical event at a location sensed by the other instrument, leaving a fiducial marker for post-hoc temporal alignment. The motivating application is synchronization of high-resolution manometry (HRM) with transperineal ultrasound for phenotyping stress urinary incontinence. Bench characterization yielded a device latency of <math> <mrow><mrow><mn>802.5</mn></mrow> <mstyle></mstyle> <mtext>μ</mtext> <mtext>m</mtext> <mo>±</mo> <mrow><mn>46.2</mn></mrow> <mstyle></mstyle> <mtext>μ</mtext> <mtext>m</mtext></mrow> </math> (mean <math><mrow><mo>±</mo></mrow> </math> SD, <math><mrow><mi>n</mi> <mo>=</mo> <mn>30</mn></mrow> </math> ), of which the electromechanical response of the actuator accounts for <math><mrow><mo>≈</mo> <mstyle></mstyle> <mrow><mn>84</mn></mrow> <mi>%</mi></mrow> </math> of the mean latency and the dominant share of the trial-to-trial variation (i.e. the SD of <math> <mrow><mrow><mn>46.2</mn></mrow> <mtext>μ</mtext> <mtext>m</mtext></mrow> </math> ). For the ultrasound-HRM application, the synchronization uncertainty is <math><mrow><mo>≈</mo> <mstyle></mstyle> <mrow><mn>6</mn></mrow> <mstyle></mstyle> <mtext>ms</mtext></mrow> </math> ( <math><mrow><mi>n</mi> <mo>=</mo> <mn>30</mn></mrow> </math> markers), set by the HRM rather than the device, whose intrinsic jitter contributes negligibly. The approach generalizes to instrument pairings in which one instrument provides a stable electrical trigger with a known relation to its recording timeline and the other is a mechanically-sensitive receiver of adequate bandwidth, provided the marker does not contaminate the signal of interest.</p>","PeriodicalId":18526,"journal":{"name":"Measurement Science and Technology","volume":"37 32","pages":"325903"},"PeriodicalIF":3.7,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13463179/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148723627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Two-color measurements supporting a revised formulation for the refractive index of air.","authors":"Patrick F Egan","doi":"10.1088/1361-6501/ae6e94","DOIUrl":"10.1088/1361-6501/ae6e94","url":null,"abstract":"<p><p>Two-color refractivity measurements are reported for carbon dioxide, oxygen, binary mixtures of nitrogen-oxygen, natural dry air, and water vapor. For the 'dry' gases, the measurements were simultaneously performed at <math><mn>0.632</mn> <mspace></mspace> <mn>9908</mn> <mspace></mspace> <mi>μ</mi> <mtext>m</mtext></math> and <math><mn>1.542</mn> <mspace></mspace> <mn>383</mn> <mspace></mspace> <mi>μ</mi> <mtext>m</mtext></math> , and cover temperatures <math><mo>(</mo> <mn>20</mn> <mo><</mo> <mfenced> <mrow> <msub><mrow><mi>t</mi></mrow> <mrow><mn>90</mn></mrow> </msub> <mo><</mo> <mn>100</mn></mrow> </mfenced> </math> °C and pressures <math><mi>p</mi> <mo><</mo> <mn>0.5</mn> <mspace></mspace> <msup><mrow><mtext>MPa</mtext></mrow> <mrow><mo>-</mo> <mn>1</mn></mrow> </msup> </math> . For water vapor, the refractivity ratio was studied for six wavelengths <math> <mfenced><mrow><mn>1.52</mn> <mo><</mo> <mi>λ</mi> <mo><</mo> <mn>1.57</mn></mrow> </mfenced> <mi>μ</mi> <mtext>m</mtext></math> relative to a simultaneous measurement made at <math><mn>0.632</mn> <mspace></mspace> <mn>9908</mn> <mspace></mspace> <mi>μ</mi> <mtext>m</mtext></math> . The carbon dioxide and oxygen measurements establish the molar refractivities and second density virial coefficients more accurately than anything done before. A Sellmeier equation is formulated for oxygen which is about 10<sup>3</sup> times more accurate than extant knowledge dating from 1932. The nitrogen-oxygen measurements are used to derive the second density cross virial coefficient. The natural dry air measurements provide a targeted refinement to the Ciddor formulation for the refractive index of air, because they establish both a reference value for refractivity and the second density virial coefficient. The water vapor measurements ensure an accurate Ciddor formulation at telecom wavelengths, and guide the implementation of the group index.</p>","PeriodicalId":18526,"journal":{"name":"Measurement Science and Technology","volume":"37 25","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13417924/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148620181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Harry Allan, Tom Partridge, Joseph Jacob, Marco Endrizzi
{"title":"Dynamic laboratory x-ray phase-contrast microtomography with structure-based prior regularisation.","authors":"Harry Allan, Tom Partridge, Joseph Jacob, Marco Endrizzi","doi":"10.1088/1361-6501/ae01c8","DOIUrl":"10.1088/1361-6501/ae01c8","url":null,"abstract":"<p><p>X-ray microtomography is a versatile tool allowing the measurement of the 3D structure of optically thick samples. As a non-destructive technique, it is readily adapted to 4D imaging, where a sample can be monitored over time, and especially in conjunction with the application of external stimuli. To apply this technique with the limited x-ray flux available at a conventional laboratory source, we leverage the contrast enhancement of free-space propagation phase-contrast imaging, achieving an increase in contrast-to-noise ratio (CNR) of 5.8x. Furthermore, we combine this with iterative reconstruction, using regularisation by a structure-based prior from a high-quality reference scan of the object. This combination of phase-contrast imaging and iterative reconstruction leads to a 29.2x improvement in CNR compared to the conventional reconstruction. This enables fully dynamic x-ray microtomography, with a temporal resolution of 9 s at a voxel size of 10.5 μm. We use this to measure the movement of a waterfront in the fine vessels of a wooden skewer, as a representative example of dynamic system evolving on the scale of tens of seconds.</p>","PeriodicalId":18526,"journal":{"name":"Measurement Science and Technology","volume":"36 9","pages":"095405"},"PeriodicalIF":3.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12426885/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145065227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Michael Neubauer, Priyanka Brahmachary, Alan Fine, Ronald June, Stephan Warnat
{"title":"Viscoelastic recovery times of chondrocytes measured using a novel 3D-printed microfluidic device.","authors":"Michael Neubauer, Priyanka Brahmachary, Alan Fine, Ronald June, Stephan Warnat","doi":"10.1088/1361-6501/adf65a","DOIUrl":"10.1088/1361-6501/adf65a","url":null,"abstract":"<p><p>This paper presents the development, production, and application of a 3D-printed microfluidic device designed to measure the viscoelastic recovery time of cartilage cells, chondrocytes. Bovine chondrocytes were imaged using a confocal microscope while compressed by a movable glass plate. Their recovery was monitored by tracking their projected area over time, converting it into a linear strain, and fitting it to a Burgers mechanical model. Strains ranging from 10% to 60% were applied to the cells, and model parameters, including the viscoelastic recovery time, were derived. We found that cells subjected to strains greater than 40% exhibited radially-symmetric deformations. This radially-symmetric deformation, possibly cell blebbing, was observed as a short-term effect, with the cell fully recovering its initial shape. Non-blebbing and blebbing chondrocytes exhibited viscoelastic recovery times of 42 s and 38 s, respectively. While the recovery time did not depend on the magnitude of applied strain, the measured permanent strain increased with higher applied strain magnitude. Overall, this study demonstrates the use of a new, low-cost 3D-printed microfluidic device in combination with advanced microscopy for characterizing the viscoelastic properties of cells.</p>","PeriodicalId":18526,"journal":{"name":"Measurement Science and Technology","volume":"36 8","pages":"085701"},"PeriodicalIF":3.4,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12340534/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144847624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Li, Zhenghan Zhao, Ce Xu, Rongmei Liu, Zhihua Wang
{"title":"Flexible piezoelectric sensor based on PVP-modified BaTiO<sub>3</sub>/MXene/PVDF-TrFE composite film for wearable applications","authors":"J. Li, Zhenghan Zhao, Ce Xu, Rongmei Liu, Zhihua Wang","doi":"10.1088/1361-6501/adffa2","DOIUrl":"https://doi.org/10.1088/1361-6501/adffa2","url":null,"abstract":"Abstract Flexible piezoelectric sensors have attracted extensive interest from both domestic and international researchers in wearable devices and electronic skin. This study proposes to introduce polyvinylpyrrolidone (PVP) and two-dimensional transition metal–carbon/nitride (MXene) to solve the agglomeration phenomenon and insufficient polarization between poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE) and barium titanate nanoparticles. PVP@BaTiO 3 /MXene/PVDF-TrFE piezoelectric films were prepared by surface modification method and solvent substitution method, and the output voltage of the films was enhanced by 241.80% compared with that of PVDF-TrFE films. The piezoelectric sensors were prepared using films with a thickness of 0.03 mm for testing and analysis. The results demonstrate that the proposed sensor exhibits excellent linearity characteristics within the pressure range of 0.1 N to 18 N, with a sensitivity of 182.17 mV N −1 and a response time of 40 ms. Furthermore, the sensor consistently maintains stable output voltage in an extensive durability test involving 10 000 pressing cycles. The sensor has been demonstrated to effectively recognize the mass change of an object. Furthermore, the integration of these sensors into an array facilitates the effective recognition of the sliding signal, thereby enabling the realization of complex pressure distribution detection. The sensor shows considerable promise for application in fields such as wearable devices.","PeriodicalId":18526,"journal":{"name":"Measurement Science and Technology","volume":"36 9","pages":"095102-095102"},"PeriodicalIF":0.0,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147889097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Highly selective detection of trace methyl sec-butyl ether using cataluminescence sensor based on mesoporous CeO<sub>2</sub> nanoparticles","authors":"Chengcheng Wan, Zhaoru Ban, Dan Zhang, Junbao He, Yanju Chen, Shan Tang, Qianchun Zhang","doi":"10.1088/1361-6501/adf24a","DOIUrl":"https://doi.org/10.1088/1361-6501/adf24a","url":null,"abstract":"Abstract Methyl sec-butyl ether (MSBE), a volatile organic compound, poses significant risks to both environmental safety and human health. Consequently, developing efficient sensors for the rapid and accurate detection of trace levels of MSBE is essential. In this study, we synthesized mesoporous CeO 2 nanoparticles using carbon quantum dots as templates, resulting in the development of a highly sensitive cataluminescence sensor system. This sensor demonstrated an impressive linear detection range of 0.50–20 mg l −1 ( R 2 = 0.998) and a low detection limit of 0.08 mg l −1 , coupled with a signal-to-noise ratio (S/N) of 3. We applied the mesoporous CeO 2 nanoparticle sensor to measure MSBE levels in various environments, including a volatile medicine reagent freezer, laboratory gas, and a storage cabinet, which yielded concentrations of 2.07, 1.38, and 3.96 mg l −1 , respectively. The sensor also exhibited excellent recovery rates, ranging from 91.1% to 110%, with relative standard deviations ( RSD, n = 5) from 3.4% to 8.7%, indicating reliable performance. Additionally, gas chromatography-mass spectrometry was employed to elucidate the mechanism underlying the developed cataluminescence sensor. This study introduces a versatile approach for designing gas sensors for MSBE that not only exhibits high sensitivity and selectivity but also significantly enhances their potential applications in both industrial and environmental monitoring.","PeriodicalId":18526,"journal":{"name":"Measurement Science and Technology","volume":"36 8","pages":"085104-085104"},"PeriodicalIF":0.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147885196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jinlong Chen, Xiaoshuang Wang, Jingchen Ye, Xiaowei Feng, Yutong Li, X. Zhang, Cuiru Sun
{"title":"Three-dimensional internal deformation measurement methods for hydrogels based on optical coherence tomography","authors":"Jinlong Chen, Xiaoshuang Wang, Jingchen Ye, Xiaowei Feng, Yutong Li, X. Zhang, Cuiru Sun","doi":"10.1088/1361-6501/adcd89","DOIUrl":"https://doi.org/10.1088/1361-6501/adcd89","url":null,"abstract":"Abstract Depth-resolved, non-contact, full-field three-dimensional (3D) deformation measurement is essential for the application of hydrogels in biomimicry, soft robotics, and optical components. However, current methods are constrained to surface measurements and encounter difficulties in underwater settings. Leveraging the 3D and depth-resolved imaging capabilities of optical coherence tomography (OCT), we propose an OCT-based method for measuring 3D deformation of hydrogels in water. This method integrates underwater electrically driven devices with a Limited-memory Broyden–Fletcher–Goldfarb–Shanno (L-BFGS) based digital volume correlation (DVC) algorithm for 3D strain measurement. We conducted virtual tensile tests and underwater rigid body translation tests to validate the method. The results demonstrated that the strain calculation algorithm had an error of less than 80 μ ϵ and the system error for underwater strain measurement was less than 800 μ ϵ . Utilizing this innovative approach, we measured the 3D displacement and strain distributions within carbon nanotube (CNT)/Poly (acrylic acid/acrylamide) (CNT/P(AA/AM)) electro-responsive hydrogel samples. These samples were immersed in solutions of differing ionic concentrations and exposed to a range of direct current electric fields. We discovered that when subjected to electric fields ranging from 1 to 3 volts, the central region of the hydrogel experiences tensile deformation along the direction from electrode to another. However, when the electric field strength is increased to between 4 and 5 volts, the deformation transitions to a compressive state. Additionally, an increase in NaCl concentration results in a decrease in the overall deformation of the hydrogel. In addition, uniaxial tensile tests were carried out on polyvinyl alcohol (PVA) hydrogels underwater to further verify the method. It was demonstrated that the method can accurately capture the internal deformation field of notched PVA hydrogels in solution under uniaxial tension. The integrated OCT-DVC method offers a novel experimental framework for precise 3D deformation measurement and analysis of semi-transparent hydrogel mechanical behavior in liquid environments.","PeriodicalId":18526,"journal":{"name":"Measurement Science and Technology","volume":"36 5","pages":"055204-055204"},"PeriodicalIF":0.0,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qianchun Zhang, Chengcheng Wan, Junbao He, Zhaoru Ban, Shan Tang, Li Jiang, Yanju Chen, Xixi Long
{"title":"Synthesis of highly selective mesoporous MgO nanoparticles for efficient detection of trace isobutyraldehyde","authors":"Qianchun Zhang, Chengcheng Wan, Junbao He, Zhaoru Ban, Shan Tang, Li Jiang, Yanju Chen, Xixi Long","doi":"10.1088/1361-6501/adb5b1","DOIUrl":"https://doi.org/10.1088/1361-6501/adb5b1","url":null,"abstract":"Abstract In this study, mesoporous MgO nanoparticles were successfully synthesized using carbon quantum dots as templates and an outstanding cataluminescence sensor system was established based on these nanoparticles. In a particular situation, the constructed sensor demonstrated remarkable linear range was 0.3106–310.6 ppm (R2 = 0.9990) with a low limit of detection of 0.0994 ppm and a signal-to-noise ratio (S/N) of 3. The mesoporous MgO nanoparticle sensor was utilized to analyze the isobutyraldehyde content in real samples. Outstanding recoveries were achieved within range of 83.4–111%, with the relative standard deviations (RSD, n = 7) ranging from 2.0% to 8.2%. Moreover, the 35-day test results showed that the sensor has good stability. Density functional theory and gas chromatography-mass spectrometry were used to research the mechanism of the designed cataluminescence sensor. This work presents a universal methodology for constructing isobutyraldehyde gas sensors with high sensitivity and selectivity, and mesoporous MgO nanoparticles sensors that expand the applications available in the industry and environment analysis.","PeriodicalId":18526,"journal":{"name":"Measurement Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147917896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A reliable, practical and cost-effective portable wireless potentiostat for mobile chemical sensing and biosensing","authors":"Qingqing Wang, Yu Pan, Yanyan Wang, Kai-Kai Zhang, Shengzhe Shi, Sheng Liu","doi":"10.1088/1361-6501/ad8e7b","DOIUrl":"https://doi.org/10.1088/1361-6501/ad8e7b","url":null,"abstract":"Abstract Traditional electrochemical workstations are costly, complex, bulky, and primarily used in laboratories. This study develops a reliable, practical, and cost-effective portable wireless potentiostat to achieve real-time detection on-site and overcome the limitations of traditional electrochemical workstations. The system employs a general-purpose microcontroller unit, a dual-mode bluetooth module and cost-effective multi-analog-to-digital converter to achieve differential sampling of the LMP91000. The system is equipped with buttons and OLEDs, enabling connection to mobile phones and computers for in-depth data analysis or independent operation. The system was successfully tested with [Fe(CN) 6 ] 3− , C 6 H 12 O 6 , and C 3 H 6 O 3 solutions at concentrations ranging from 0 to 20 mm. The goodness-of-fit ( R 2 ) values are 0.984, 0.996, and 0.998, respectively. The average relative standard deviation of the three blank solutions is approximately 3.22%. The detection limits measured (0.003, 0.009, and 0.005 mm) are all lower than the minimum detection concentration (0.2, 0.1, and 0.1 mM). The coefficient of variation for repetitive experiments is less than 5.53%. The device accurately executed chronoamperometry (applied voltage range is ± 1.2 V, current range is ± 882 μA, accuracy is ±1%) with high sensitivity and good repeatability. Based on this circuit, a lactic acid detector and a urine glucose detector were developed, which work stably and support long-term operation, proving the stability and reliability of the circuit. Compared to commercial electrochemical workstations, portable wireless electrochemical system offers remarkable advantages in cost (<$6.4), size (41.5 mm × 76.5 mm), and practicality, making it suitable for a range of applications, including biomedical analysis, food safety, environmental monitoring, and smart wearables.","PeriodicalId":18526,"journal":{"name":"Measurement Science and Technology","volume":"36 1","pages":"015903-015903"},"PeriodicalIF":0.0,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147897852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Flexible piezoelectric pressure sensor based on BaTiO<sub>3</sub>-CNT/RTV composite film with filter paper microstructures for monitoring hand motions","authors":"Y.C. Dong, Ce Xu, Shenghua Chen, Zhihua Wang","doi":"10.1088/1361-6501/ad4577","DOIUrl":"https://doi.org/10.1088/1361-6501/ad4577","url":null,"abstract":"Abstract Flexible piezoelectric sensors are widely used in various applications such as physiological signal monitoring and human-computer interaction. The present study introduces a BaTiO 3 -CNT/RTV piezoelectric sensor fabricated using a filter paper template. It incorporates micro-scale fiber stacking and a 1% CNT doping in the microstructure, resulting in a notable enhancement of sensor sensitivity, increasing it from 0.07 V N −1 to 0.69 V N −1 , representing an almost tenfold improvement. Furthermore, the study investigates the influence of affecting factors like the flexible substrate of the sensing film, thickness, and mass fractions of various materials on the output voltage. The sensor exhibits superior characteristics such as good repeatability under 5000 cyclic loads, high elongation at break, fast response (80 ms) and recovery times (90 ms), and good linearity. It also demonstrates outstanding sensitivity (12 mV/10°) when monitoring different finger bending states, enabling real-time, sensitive, and reliable hand motion tracking. This sensor holds promising prospects for future developments in the fields of intelligent grasping and sign language translation.","PeriodicalId":18526,"journal":{"name":"Measurement Science and Technology","volume":"35 8","pages":"085111-085111"},"PeriodicalIF":0.0,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}