Pub Date : 2013-04-07DOI: 10.1109/NEMS.2013.6559904
Yu-Nan Lin, Peng-Chun Chen, R. Wu, L. Pan, F. Tseng
In this study, we propose a microfluidic device with a diffuser type chamber to differentiate the sperm velocity by gradually lowering down the flow speed in diffuser by gradually increasing the width of the channel. When the sperms' moving speed match the flow speed, the sperms tend to have the ability to flow against the stream, thus separating the sperms at different specific positions along the diffuser according to their motility becomes gentle and fast. Most of the motile sperm will stay in the expanding area and the non-motile sperms will drift to outlet. Different from the previous study we proposed in IEEE NEMS, 2012 , here we have three improvements: (1) Sperms can be separated in more detailed quality level. (2) Sperm will be more activated by passing through a dumb bell area than by the traditional methods. (3) The space in the device can accumulate large amount of sperms (~millions).
{"title":"Micro diffuser-type movement inversion sorter for high-efficient sperm sorting","authors":"Yu-Nan Lin, Peng-Chun Chen, R. Wu, L. Pan, F. Tseng","doi":"10.1109/NEMS.2013.6559904","DOIUrl":"https://doi.org/10.1109/NEMS.2013.6559904","url":null,"abstract":"In this study, we propose a microfluidic device with a diffuser type chamber to differentiate the sperm velocity by gradually lowering down the flow speed in diffuser by gradually increasing the width of the channel. When the sperms' moving speed match the flow speed, the sperms tend to have the ability to flow against the stream, thus separating the sperms at different specific positions along the diffuser according to their motility becomes gentle and fast. Most of the motile sperm will stay in the expanding area and the non-motile sperms will drift to outlet. Different from the previous study we proposed in IEEE NEMS, 2012 , here we have three improvements: (1) Sperms can be separated in more detailed quality level. (2) Sperm will be more activated by passing through a dumb bell area than by the traditional methods. (3) The space in the device can accumulate large amount of sperms (~millions).","PeriodicalId":308928,"journal":{"name":"The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122265402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-04-07DOI: 10.1109/NEMS.2013.6559688
G. Slaughter, Y. Xin
An evanescent wave fiber optic sensor for the detection of groundwater contaminants is developed. A 62.5 μm fiber core, 15 mm in length, was chemically etched and coated with 20 μm porous silica medium using sol-gel dip-coating method. This lower-refractive index medium causes the light beam to be transmitted by total reflection and the resulting evanescent wave produces a net flow of energy across the reflecting surface in the surrounding medium where it interacts with the surrounding environment. The power intensity of the solgel modified fiber is measured in the 1540 to 1600 nm spectral range. Various amounts of pure hexane and ethanol were used to examine the response of the sensor. A remarkable influence of the absorption of the evanescent waves in the sol-gel modified fiber for hexane and ethanol was observed.
{"title":"Sol-gel fiber-optic absorbance sensor for groundwater contaminants","authors":"G. Slaughter, Y. Xin","doi":"10.1109/NEMS.2013.6559688","DOIUrl":"https://doi.org/10.1109/NEMS.2013.6559688","url":null,"abstract":"An evanescent wave fiber optic sensor for the detection of groundwater contaminants is developed. A 62.5 μm fiber core, 15 mm in length, was chemically etched and coated with 20 μm porous silica medium using sol-gel dip-coating method. This lower-refractive index medium causes the light beam to be transmitted by total reflection and the resulting evanescent wave produces a net flow of energy across the reflecting surface in the surrounding medium where it interacts with the surrounding environment. The power intensity of the solgel modified fiber is measured in the 1540 to 1600 nm spectral range. Various amounts of pure hexane and ethanol were used to examine the response of the sensor. A remarkable influence of the absorption of the evanescent waves in the sol-gel modified fiber for hexane and ethanol was observed.","PeriodicalId":308928,"journal":{"name":"The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133341301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-04-07DOI: 10.1109/NEMS.2013.6559782
Lou Wenzhong, Ding Xuran, Hong Rongsen
For the advantages of small volume, low power consumption and high accuracy, MEMS sensors have been widely used in many fields, especially for high altitude meteorology monitoring, where a radiosonde with MEMS barometric pressure sensors will be used to collect the data of barometric pressure. Therefore, the way to calibrate such MEMS sensors effectively is of a great value. This paper reported a method for calibration of multiple state of the art MEMS barometric pressure sensors simultaneously based on an innovative test system. With this system, at most eight sensors can be calibrated in a same time. A test for this system by utilizing BMP085 has been implemented, and the results showed that the system was reliable and effective.
{"title":"A multi-channel test system for calibration of MEMS barometric pressure sensors","authors":"Lou Wenzhong, Ding Xuran, Hong Rongsen","doi":"10.1109/NEMS.2013.6559782","DOIUrl":"https://doi.org/10.1109/NEMS.2013.6559782","url":null,"abstract":"For the advantages of small volume, low power consumption and high accuracy, MEMS sensors have been widely used in many fields, especially for high altitude meteorology monitoring, where a radiosonde with MEMS barometric pressure sensors will be used to collect the data of barometric pressure. Therefore, the way to calibrate such MEMS sensors effectively is of a great value. This paper reported a method for calibration of multiple state of the art MEMS barometric pressure sensors simultaneously based on an innovative test system. With this system, at most eight sensors can be calibrated in a same time. A test for this system by utilizing BMP085 has been implemented, and the results showed that the system was reliable and effective.","PeriodicalId":308928,"journal":{"name":"The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133223676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-04-07DOI: 10.1109/NEMS.2013.6559936
Wang Hai, Li Han, Zhou Xuan, Wang Zhan, Wen Li
Microplasma has been applied widely in micro- and nano-device fabrication. The etching performance and profile evolution are crucial for realization of Scanning Plasma Etching (SPE). In this work, silicon etching in SPE with microplasma reactor will be discussed through multi-fluid plasma model integrated with Monte Carlo model. The relationship between etching rate and tip-sample distance is discussed. The evolution of etched silicon profile is also investigated through simulation of feature diameter and etching depth with the time. The result of simulation will provide a foundation for optimization of operative conditions of SPE.
{"title":"SF6 plasma etching and profile evolution of silicon in microplasma reactor","authors":"Wang Hai, Li Han, Zhou Xuan, Wang Zhan, Wen Li","doi":"10.1109/NEMS.2013.6559936","DOIUrl":"https://doi.org/10.1109/NEMS.2013.6559936","url":null,"abstract":"Microplasma has been applied widely in micro- and nano-device fabrication. The etching performance and profile evolution are crucial for realization of Scanning Plasma Etching (SPE). In this work, silicon etching in SPE with microplasma reactor will be discussed through multi-fluid plasma model integrated with Monte Carlo model. The relationship between etching rate and tip-sample distance is discussed. The evolution of etched silicon profile is also investigated through simulation of feature diameter and etching depth with the time. The result of simulation will provide a foundation for optimization of operative conditions of SPE.","PeriodicalId":308928,"journal":{"name":"The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131403021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-04-07DOI: 10.1109/NEMS.2013.6559754
Chun-Ming Chang, M. Shiao, D. Chiang, Mao-Jung Huang, C. Yang, W. Hsueh
In this paper, we demonstrate and compare the formation of ordered etching masks for submicron patterned sapphire through use of the nanosphere lithography and nanoimprint lithography methods. Both NSL and NIL were applied to produce the submicron honeycomb network and cone protrusion array structure on the sapphire surface as etching masks. The sequent ICP-RIE technique was applied to further etch the sapphire under the mask. Two types of submicron pattern were obtained on the substrate surface after the etching processes were completed. One type of substrate was the submicron hole array structure and another type was the cone array structure. The working pressure had a considerable effect on the shape geometry and etching rate. The contact angles of the untreated substrate and two differing patterned sapphire substrates were measured and compared. From the contact angle measurement results, we concluded that the protruded contact area dominated the hydrophobic or hydrophilic property.
{"title":"Surface property study of different patterning sapphire structures by ICP-RIE","authors":"Chun-Ming Chang, M. Shiao, D. Chiang, Mao-Jung Huang, C. Yang, W. Hsueh","doi":"10.1109/NEMS.2013.6559754","DOIUrl":"https://doi.org/10.1109/NEMS.2013.6559754","url":null,"abstract":"In this paper, we demonstrate and compare the formation of ordered etching masks for submicron patterned sapphire through use of the nanosphere lithography and nanoimprint lithography methods. Both NSL and NIL were applied to produce the submicron honeycomb network and cone protrusion array structure on the sapphire surface as etching masks. The sequent ICP-RIE technique was applied to further etch the sapphire under the mask. Two types of submicron pattern were obtained on the substrate surface after the etching processes were completed. One type of substrate was the submicron hole array structure and another type was the cone array structure. The working pressure had a considerable effect on the shape geometry and etching rate. The contact angles of the untreated substrate and two differing patterned sapphire substrates were measured and compared. From the contact angle measurement results, we concluded that the protruded contact area dominated the hydrophobic or hydrophilic property.","PeriodicalId":308928,"journal":{"name":"The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127051516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-04-07DOI: 10.1109/NEMS.2013.6559846
M. Ren, Xiaowei Liu, Wen Zuo, Z. Mao
This paper presents an electromechancial interface model of liquid floated micro-gyroscope, which can analyze sensing capacitors and resistance of gyroscope. The impacts of them are analyzed and simulated with the simulation software of circuit. The analytic results indicate that the reasonable interface circuit can substantially remove the impacts of these parasitic capacitances, increase the signal noise ratio. To ensure the high resolution, the model of liquid floated micro-gyroscope with ANSOFT conducted. The results show the transfer characteristics of the sensor and nonlinear error of transfer characteristics.
{"title":"Analysis of electromechanical interface model for liquid floated micro-gyroscope","authors":"M. Ren, Xiaowei Liu, Wen Zuo, Z. Mao","doi":"10.1109/NEMS.2013.6559846","DOIUrl":"https://doi.org/10.1109/NEMS.2013.6559846","url":null,"abstract":"This paper presents an electromechancial interface model of liquid floated micro-gyroscope, which can analyze sensing capacitors and resistance of gyroscope. The impacts of them are analyzed and simulated with the simulation software of circuit. The analytic results indicate that the reasonable interface circuit can substantially remove the impacts of these parasitic capacitances, increase the signal noise ratio. To ensure the high resolution, the model of liquid floated micro-gyroscope with ANSOFT conducted. The results show the transfer characteristics of the sensor and nonlinear error of transfer characteristics.","PeriodicalId":308928,"journal":{"name":"The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115753021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-04-07DOI: 10.1109/NEMS.2013.6559710
Chung-Yao Yang, Chun-Yen Sung, J. Yeh
This paper describes an easy method to fabricate nanoscale features on chitosan membranes from a silicon mold through using a combination of solution casting and etching process. Three different molecular weight chitosan powders were used to evaluate the topography of nanoscale features after molding process. The Young's modulus of three different molecular weight (120, 185 and 250 kDa) are almost the same in air with a value about 6 GPa and in medium with a value about 5 MPa. The size of the nanotexture is 250 nm in width and 200 nm in depth. Human breast cancer cells MCF-7 and HIG-82 fibroblasts were cultured on patterned nanotextured chitosan surfaces and both cells can be patterned on specific regions. The results exhibited the cells preferred to adhere on flat chitosan surfaces than on nanotextured chitosan surfaces. This nanotextured chitosan surfaces could be used for controlling cell development in bio-relevant applications, such biomedical devices, biology and tissue engineering.
{"title":"Nanotextured chitosan surfaces for studying cell behaviors","authors":"Chung-Yao Yang, Chun-Yen Sung, J. Yeh","doi":"10.1109/NEMS.2013.6559710","DOIUrl":"https://doi.org/10.1109/NEMS.2013.6559710","url":null,"abstract":"This paper describes an easy method to fabricate nanoscale features on chitosan membranes from a silicon mold through using a combination of solution casting and etching process. Three different molecular weight chitosan powders were used to evaluate the topography of nanoscale features after molding process. The Young's modulus of three different molecular weight (120, 185 and 250 kDa) are almost the same in air with a value about 6 GPa and in medium with a value about 5 MPa. The size of the nanotexture is 250 nm in width and 200 nm in depth. Human breast cancer cells MCF-7 and HIG-82 fibroblasts were cultured on patterned nanotextured chitosan surfaces and both cells can be patterned on specific regions. The results exhibited the cells preferred to adhere on flat chitosan surfaces than on nanotextured chitosan surfaces. This nanotextured chitosan surfaces could be used for controlling cell development in bio-relevant applications, such biomedical devices, biology and tissue engineering.","PeriodicalId":308928,"journal":{"name":"The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124448948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-04-07DOI: 10.1109/NEMS.2013.6559721
Hsi-Kai Wang, Cheng-Han Tsai, Chung-Tao Tang, Pi-Chun Li, J. Leou, Yin-Liang Tang, H. Hsieh, Han‐Chung Wu, Chao-Min Cheng
Dengue fever is one of the acute flavivrus-borne infectious diseases caused by dengue virus with four serotypes. To date, there are no efficient diagnostic tools available for monitoring the disease activity of dengue fever. It is needed to develop a diagnostic device with the characteristics of inexpensiveness, ease-to-use and robustness for the detection of dengue fever. In this study, we have developed an ELISA-based diagnostic device prepared via wax printing method through using filter paper. The antigens that we targeted to quantify in the buffer system were both non-structural protein 1 with the detection limit of about 100 pg/mL and envelope protein with the diluted virus culture soup of about 100 times of serotype 2 dengue virus (only 2 μL sample). We believe that this study would provide insight on the development of in-vitro diagnostic devices for dengue fever and various diseases in the different divisions of medicine.
{"title":"Monitoring the disease activity via the antibody-antigen recognition in paper","authors":"Hsi-Kai Wang, Cheng-Han Tsai, Chung-Tao Tang, Pi-Chun Li, J. Leou, Yin-Liang Tang, H. Hsieh, Han‐Chung Wu, Chao-Min Cheng","doi":"10.1109/NEMS.2013.6559721","DOIUrl":"https://doi.org/10.1109/NEMS.2013.6559721","url":null,"abstract":"Dengue fever is one of the acute flavivrus-borne infectious diseases caused by dengue virus with four serotypes. To date, there are no efficient diagnostic tools available for monitoring the disease activity of dengue fever. It is needed to develop a diagnostic device with the characteristics of inexpensiveness, ease-to-use and robustness for the detection of dengue fever. In this study, we have developed an ELISA-based diagnostic device prepared via wax printing method through using filter paper. The antigens that we targeted to quantify in the buffer system were both non-structural protein 1 with the detection limit of about 100 pg/mL and envelope protein with the diluted virus culture soup of about 100 times of serotype 2 dengue virus (only 2 μL sample). We believe that this study would provide insight on the development of in-vitro diagnostic devices for dengue fever and various diseases in the different divisions of medicine.","PeriodicalId":308928,"journal":{"name":"The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114679850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-04-07DOI: 10.1109/NEMS.2013.6559807
Guangqi He, G. Zheng, Jianyi Zheng, Yihong Lin, Jin Wei, Haiyan Liu, Bin Wang, Daoheng Sun
Laminar sheath gas is introduced into the Electrohydrodynamic Direct-Write (EDW) to promote the stability of charged jet and deposition precision of printed micro/nano structure. A novel EDW spinneret with sheath gas is designed to fabricate fine 1D micro/nano structure under lower applied voltage. The laminar sheath gas restricts the whipping motion of charged jet as well as decreases the required voltage. With the help of stretch force stems from sheath gas, the initiation voltage and sustaining voltage of EDW can be decreased obviously; the average diameter of micro/nano structure can be decreased from 21.58μm to 505.58nm. Different patterns can be also obtained by adjusting the moving speed of the collector in a sheath gas cases. Therefore, it can be concluded that provides a unique way for the precision deposition and integration of EDW micro/nano structure with in the micro/nanosystems.
{"title":"Micro/nano structure written via sheath gas assisted EHD jet","authors":"Guangqi He, G. Zheng, Jianyi Zheng, Yihong Lin, Jin Wei, Haiyan Liu, Bin Wang, Daoheng Sun","doi":"10.1109/NEMS.2013.6559807","DOIUrl":"https://doi.org/10.1109/NEMS.2013.6559807","url":null,"abstract":"Laminar sheath gas is introduced into the Electrohydrodynamic Direct-Write (EDW) to promote the stability of charged jet and deposition precision of printed micro/nano structure. A novel EDW spinneret with sheath gas is designed to fabricate fine 1D micro/nano structure under lower applied voltage. The laminar sheath gas restricts the whipping motion of charged jet as well as decreases the required voltage. With the help of stretch force stems from sheath gas, the initiation voltage and sustaining voltage of EDW can be decreased obviously; the average diameter of micro/nano structure can be decreased from 21.58μm to 505.58nm. Different patterns can be also obtained by adjusting the moving speed of the collector in a sheath gas cases. Therefore, it can be concluded that provides a unique way for the precision deposition and integration of EDW micro/nano structure with in the micro/nanosystems.","PeriodicalId":308928,"journal":{"name":"The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117331808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study reports a piezoelectric polyvinylidene fluoride (PVDF) polymer-based sensor patch for simultaneous heartbeat and respiration detections. The principle is based on the piezoelectric sensing mechanism to detect the pulsatile vibrations, and periodical deformations on the chest wall of human body during heartbeats and respirations, respectively. In this study, the sensor patch with a structurally curved PVDF film was designed, and fabricated. The role of the curved structure designed to enhance detection signals, and the capability of the sensor to faithfully detect the heartbeats and respirations were experimentally evaluated. Results revealed that the sensor was proved to be able to generate the heartbeat and respiration signals which were in concordance with those based on a commercial electrocardiogram (ECG), and respiratory effort transducer, respectively. As a whole, this study has developed a PVDF-based sensor patch which was capable of monitoring the heartbeats and respirations with high fidelity. Other distinctive features include its small size, light weight, ease of use, low cost, and portability. All these make it a promising sensing device to monitor heartbeats and respirations either in medical centers, or home care units.
{"title":"Development of a piezoelectric polyvinylidene fluoride polymer-based sensor patch for simultaneous heartbeat and respiration monitoring","authors":"Yi-Yuan Chiu, Wan-Ying Lin, Hsin-Yao Wang, Song-Bin Huang, Min-Hsien Wu","doi":"10.1109/NEMS.2013.6559679","DOIUrl":"https://doi.org/10.1109/NEMS.2013.6559679","url":null,"abstract":"This study reports a piezoelectric polyvinylidene fluoride (PVDF) polymer-based sensor patch for simultaneous heartbeat and respiration detections. The principle is based on the piezoelectric sensing mechanism to detect the pulsatile vibrations, and periodical deformations on the chest wall of human body during heartbeats and respirations, respectively. In this study, the sensor patch with a structurally curved PVDF film was designed, and fabricated. The role of the curved structure designed to enhance detection signals, and the capability of the sensor to faithfully detect the heartbeats and respirations were experimentally evaluated. Results revealed that the sensor was proved to be able to generate the heartbeat and respiration signals which were in concordance with those based on a commercial electrocardiogram (ECG), and respiratory effort transducer, respectively. As a whole, this study has developed a PVDF-based sensor patch which was capable of monitoring the heartbeats and respirations with high fidelity. Other distinctive features include its small size, light weight, ease of use, low cost, and portability. All these make it a promising sensing device to monitor heartbeats and respirations either in medical centers, or home care units.","PeriodicalId":308928,"journal":{"name":"The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121888263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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