Pub Date : 2021-06-20DOI: 10.1109/Transducers50396.2021.9495726
Jongmoon Jang, Giulia Panusa, G. Boero, J. Brugger
Glass-like carbon (GC) has been widely used in micronano devices due to its excellent properties such as hardness, biocompatibility, and chemical inertness. In this work we investigate, for the first time, the piezoresistive behavior of GC in view of its potential applications in strain sensors. In particular, we present the structural and electrical properties of SU-8 derived GC thin films together with the fabrication and characterization of GC-based strain sensors. When mechanical displacement is applied to the GC strain sensors, the average gauge factors of the GC piezo-resistors pyrolyzed at 700 and 900°C are 7.3 and 2.0, respectively.
{"title":"A Glass-Like Carbon MEMS Strain Sensor","authors":"Jongmoon Jang, Giulia Panusa, G. Boero, J. Brugger","doi":"10.1109/Transducers50396.2021.9495726","DOIUrl":"https://doi.org/10.1109/Transducers50396.2021.9495726","url":null,"abstract":"Glass-like carbon (GC) has been widely used in micronano devices due to its excellent properties such as hardness, biocompatibility, and chemical inertness. In this work we investigate, for the first time, the piezoresistive behavior of GC in view of its potential applications in strain sensors. In particular, we present the structural and electrical properties of SU-8 derived GC thin films together with the fabrication and characterization of GC-based strain sensors. When mechanical displacement is applied to the GC strain sensors, the average gauge factors of the GC piezo-resistors pyrolyzed at 700 and 900°C are 7.3 and 2.0, respectively.","PeriodicalId":6814,"journal":{"name":"2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)","volume":"83 1","pages":"871-874"},"PeriodicalIF":0.0,"publicationDate":"2021-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75406434","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 : 2021-06-20DOI: 10.1109/Transducers50396.2021.9495485
Pedro González-Losada, F. Alves, M. Martins, Stephen Mundy, R. Dias, K. Vinayakumar
In this manuscript, the first pyroelectric-based rechargeable electret for continuous energy harvester is reported. The proposed pyroelectric-based electret preparation provides two main advantages 1) Wafer-scale electret production with uniform surface charge density and 2) On-chip rechargeable option for the electret-based energy harvesters and sensors. Pyroelectrically generated surface charges are transferred to the dielectric material placed in contact with the polarized surface of the pyroelectric crystal. A 5 mm thick lithium niobate crystal is used as a pyroelectric material with a temperature gradient of 2.3°C/sec. A Teflon dielectric is used as an electret material with a surface area of 1 cm2 and thickness of $75mu m$. Obtained results from the pyroelectrically prepared electret showed a surface potential of ∼540V with a charging efficiency of 8.9% from the pyroelectric surface potential of 6060V. Obtained results were in good agreement with repeatability and charge stability for >15 days. Our preliminary experiment of energy harvester showed an average power of $1.29mu W$ at 4Hz.
{"title":"Pyroelectrically Rechargeable Electret for Continuous Vibration Energy Harvester","authors":"Pedro González-Losada, F. Alves, M. Martins, Stephen Mundy, R. Dias, K. Vinayakumar","doi":"10.1109/Transducers50396.2021.9495485","DOIUrl":"https://doi.org/10.1109/Transducers50396.2021.9495485","url":null,"abstract":"In this manuscript, the first pyroelectric-based rechargeable electret for continuous energy harvester is reported. The proposed pyroelectric-based electret preparation provides two main advantages 1) Wafer-scale electret production with uniform surface charge density and 2) On-chip rechargeable option for the electret-based energy harvesters and sensors. Pyroelectrically generated surface charges are transferred to the dielectric material placed in contact with the polarized surface of the pyroelectric crystal. A 5 mm thick lithium niobate crystal is used as a pyroelectric material with a temperature gradient of 2.3°C/sec. A Teflon dielectric is used as an electret material with a surface area of 1 cm2 and thickness of $75mu m$. Obtained results from the pyroelectrically prepared electret showed a surface potential of ∼540V with a charging efficiency of 8.9% from the pyroelectric surface potential of 6060V. Obtained results were in good agreement with repeatability and charge stability for >15 days. Our preliminary experiment of energy harvester showed an average power of $1.29mu W$ at 4Hz.","PeriodicalId":6814,"journal":{"name":"2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)","volume":"25 1","pages":"928-931"},"PeriodicalIF":0.0,"publicationDate":"2021-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80179032","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 : 2021-06-20DOI: 10.1109/Transducers50396.2021.9495484
Ruofeng Han, Nianying Wang, Qisheng He, Jiachou Wang, Xinxin Li
This paper proposes a temperature threshold triggered energy harvesting scheme for potential monitoring thermal event. The demonstrated prototype comprises a generation cantilever and a bimetallic cantilever that magnetically attract together. When the structure is heated to a pre-set temperature threshold, heat absorption induced bimetallic effect of the bimetallic cantilever will cause sufficiently bend of the generation cantilever to get rid of the magnetic attraction and vibrate freely to generate electricity. After the heat in the bimetallic cantilever is dissipated, the two cantilevers attract together again to return to the original state. Under continual heating, the temperature threshold triggered cycle is repeated to intermittently generate electricity. In this paper, the temperature threshold of the harvester is modeled, and the harvester prototype is fabricated. When triggered at 71°C, the harvester is tested to generate Vpp of 1.14 V and power of 1.077 µW within one cycle.
{"title":"An Energy Harvesting Scheme with Temperature Threshold Triggered Generation for Heat Event Autonomous Monitoring","authors":"Ruofeng Han, Nianying Wang, Qisheng He, Jiachou Wang, Xinxin Li","doi":"10.1109/Transducers50396.2021.9495484","DOIUrl":"https://doi.org/10.1109/Transducers50396.2021.9495484","url":null,"abstract":"This paper proposes a temperature threshold triggered energy harvesting scheme for potential monitoring thermal event. The demonstrated prototype comprises a generation cantilever and a bimetallic cantilever that magnetically attract together. When the structure is heated to a pre-set temperature threshold, heat absorption induced bimetallic effect of the bimetallic cantilever will cause sufficiently bend of the generation cantilever to get rid of the magnetic attraction and vibrate freely to generate electricity. After the heat in the bimetallic cantilever is dissipated, the two cantilevers attract together again to return to the original state. Under continual heating, the temperature threshold triggered cycle is repeated to intermittently generate electricity. In this paper, the temperature threshold of the harvester is modeled, and the harvester prototype is fabricated. When triggered at 71°C, the harvester is tested to generate Vpp of 1.14 V and power of 1.077 µW within one cycle.","PeriodicalId":6814,"journal":{"name":"2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)","volume":"21 1","pages":"459-462"},"PeriodicalIF":0.0,"publicationDate":"2021-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82812201","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 : 2021-06-20DOI: 10.1109/Transducers50396.2021.9495722
Madan Parajuli, G. Sobreviela, Hemin Zhang, A. Seshia
This paper reports experimental results demonstrating excellent short-term frequency stability of 45.6 µLHz (36 ppt@0.4 s integration time) for a bulk acoustic wave (BAW) silicon disk resonator oscillator. The n=4 radial mode of a BAW disk resonator demonstrates an extremely high-quality factor of 1.8*106 at 1.25 MHz. The disk is designed with anchors aligned with nodal locations to minimize anchor damping. The results on the measured short-term frequency stability reported here benchmark favourably relative to the state-of-the-art.
{"title":"A Silicon MEMS Disk Resonator Oscillator Demonstrating 36 ppt Frequency Stability","authors":"Madan Parajuli, G. Sobreviela, Hemin Zhang, A. Seshia","doi":"10.1109/Transducers50396.2021.9495722","DOIUrl":"https://doi.org/10.1109/Transducers50396.2021.9495722","url":null,"abstract":"This paper reports experimental results demonstrating excellent short-term frequency stability of 45.6 µLHz (36 ppt@0.4 s integration time) for a bulk acoustic wave (BAW) silicon disk resonator oscillator. The n=4 radial mode of a BAW disk resonator demonstrates an extremely high-quality factor of 1.8*106 at 1.25 MHz. The disk is designed with anchors aligned with nodal locations to minimize anchor damping. The results on the measured short-term frequency stability reported here benchmark favourably relative to the state-of-the-art.","PeriodicalId":6814,"journal":{"name":"2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)","volume":"129 1","pages":"305-308"},"PeriodicalIF":0.0,"publicationDate":"2021-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82924594","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 : 2021-06-20DOI: 10.1109/Transducers50396.2021.9495419
G. Murillo
An overview on nanogenerators and energy harvesting systems applied to electrical stimulation of electroactive cells is introduced in this paper. We have already demonstrated the use of ZnO nanostructures and other piezoelectric materials to stimulate osteoblast-like and muscle cells, by means of the local modulation of their membrane potentials with submicron spatial resolution. This stimulation improved proliferation and accelerated differentiation, and seem to be a great tool for the future bioelectronic nanomedicines. Our research is now focused on the development of biocompatible microdevices that integrate smart materials for wireless stimulation of excitable cells, by means of ultrasound or electromagnetic signals.
{"title":"Nanogenerators and Self-Powered Microdevices Applied to Wireless Electrical Stimulation at Cell Level","authors":"G. Murillo","doi":"10.1109/Transducers50396.2021.9495419","DOIUrl":"https://doi.org/10.1109/Transducers50396.2021.9495419","url":null,"abstract":"An overview on nanogenerators and energy harvesting systems applied to electrical stimulation of electroactive cells is introduced in this paper. We have already demonstrated the use of ZnO nanostructures and other piezoelectric materials to stimulate osteoblast-like and muscle cells, by means of the local modulation of their membrane potentials with submicron spatial resolution. This stimulation improved proliferation and accelerated differentiation, and seem to be a great tool for the future bioelectronic nanomedicines. Our research is now focused on the development of biocompatible microdevices that integrate smart materials for wireless stimulation of excitable cells, by means of ultrasound or electromagnetic signals.","PeriodicalId":6814,"journal":{"name":"2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)","volume":"45 1","pages":"97-100"},"PeriodicalIF":0.0,"publicationDate":"2021-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81244408","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 : 2021-06-20DOI: 10.1109/Transducers50396.2021.9495596
Zhezheng Zhu, Lingmeng Yang, Wenhan Chang, Chengchen Gao, Y. Hao, Zhenchuan Yang
An L-shaped two-dimensional acoustic particle velocity sensor (APVS), which has integrated two best performing one-dimensional APVS on a single chip is presented. This structure keeps the two sensitive axes exactly orthogonal to each other, avoiding the alignment error. There are no silicon substrate blocking in both sensitive directions, so the flow directions nearby the wires have little differences. As a result, the two axes have equal sensitivity, thus requiring no correction. The measured velocity sensitivity at 1 kHz is 2.53 dB V/Pa, with relative direction sensitivity of 28 dB. Since the total size of the chip is only 4.4 × 4.4 mm, it can detect the 2-D particle velocity at one point.
提出了一种l型二维声粒子速度传感器(APVS)，它将两种性能最好的一维声粒子速度传感器集成在一个芯片上。这种结构使两个敏感轴彼此完全正交，避免了对准误差。在两个敏感方向上都没有硅衬底阻挡，因此导线附近的流动方向差异很小。因此，两个轴具有相同的灵敏度，因此不需要校正。测得的1 kHz速度灵敏度为2.53 dB V/Pa，相对方向灵敏度为28 dB。由于芯片的总尺寸仅为4.4 × 4.4 mm，因此可以检测到一点的二维粒子速度。
{"title":"An L-Shaped 2-Dimensional Particle Velocity Sensor","authors":"Zhezheng Zhu, Lingmeng Yang, Wenhan Chang, Chengchen Gao, Y. Hao, Zhenchuan Yang","doi":"10.1109/Transducers50396.2021.9495596","DOIUrl":"https://doi.org/10.1109/Transducers50396.2021.9495596","url":null,"abstract":"An L-shaped two-dimensional acoustic particle velocity sensor (APVS), which has integrated two best performing one-dimensional APVS on a single chip is presented. This structure keeps the two sensitive axes exactly orthogonal to each other, avoiding the alignment error. There are no silicon substrate blocking in both sensitive directions, so the flow directions nearby the wires have little differences. As a result, the two axes have equal sensitivity, thus requiring no correction. The measured velocity sensitivity at 1 kHz is 2.53 dB V/Pa, with relative direction sensitivity of 28 dB. Since the total size of the chip is only 4.4 × 4.4 mm, it can detect the 2-D particle velocity at one point.","PeriodicalId":6814,"journal":{"name":"2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)","volume":"34 1","pages":"1255-1258"},"PeriodicalIF":0.0,"publicationDate":"2021-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82722386","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}
Lithium niobate (LiNbO3) is one of the most important multifunctional materials, which possesses excellent electro-optic and piezoelectric properties, as well as high transmittance in the mid-infrared (mid-IR) wavelength range. In this work, we developed a wet sequential plasma activated method for the heterogeneous direct bonding of single-crystal LiNbO3 and Si with a nanometer-scale (∼6.4 nm) interface. Both surface and interface characterizations are used for the exploration of the bonding mechanism. For the first time, atomic structures of the LiNbO3/Si direct bonding interface have been disclosed. Leveraging this direct bonding method, we creatively integrate the metasurface into the LiNbO3-based nanofluidics for wavelength-dependent imaging. Because of the accurate nanogap control between the nanoantenna and metal reflector, the quadrupole resonance can be well excited. Therefore, the mid-IR imaging with ultrahigh contrast has been achieved in the wavelength of $2.68 mu mathrm{m}, 3.16 mu mathrm{m}$, and $3.61 mumathrm{m}$. Moreover, since the hot spots are completely exposed in the nanochamber, which can be filled with various types of liquids. More images can be designed and presented based on the light-matter interaction and changes of refractive index. Therefore, this hybrid LiNbO3-based nanofluidics has great potential in the applications of switchable optical devices and information encryption.
{"title":"Heterogeneous LiNbO3/Si Direct Bonding for Wavelength-Dependent Mid-Infrared Imaging","authors":"Jikai Xu, Zhihao Ren, Xinmiao Liu, Cheng Xu, Chenxi Wang, Yanhong Tian, Chengkuo Lee","doi":"10.1109/Transducers50396.2021.9495511","DOIUrl":"https://doi.org/10.1109/Transducers50396.2021.9495511","url":null,"abstract":"Lithium niobate (LiNbO3) is one of the most important multifunctional materials, which possesses excellent electro-optic and piezoelectric properties, as well as high transmittance in the mid-infrared (mid-IR) wavelength range. In this work, we developed a wet sequential plasma activated method for the heterogeneous direct bonding of single-crystal LiNbO3 and Si with a nanometer-scale (∼6.4 nm) interface. Both surface and interface characterizations are used for the exploration of the bonding mechanism. For the first time, atomic structures of the LiNbO3/Si direct bonding interface have been disclosed. Leveraging this direct bonding method, we creatively integrate the metasurface into the LiNbO3-based nanofluidics for wavelength-dependent imaging. Because of the accurate nanogap control between the nanoantenna and metal reflector, the quadrupole resonance can be well excited. Therefore, the mid-IR imaging with ultrahigh contrast has been achieved in the wavelength of $2.68 mu mathrm{m}, 3.16 mu mathrm{m}$, and $3.61 mumathrm{m}$. Moreover, since the hot spots are completely exposed in the nanochamber, which can be filled with various types of liquids. More images can be designed and presented based on the light-matter interaction and changes of refractive index. Therefore, this hybrid LiNbO3-based nanofluidics has great potential in the applications of switchable optical devices and information encryption.","PeriodicalId":6814,"journal":{"name":"2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)","volume":"120 1","pages":"585-588"},"PeriodicalIF":0.0,"publicationDate":"2021-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87793171","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 : 2021-06-20DOI: 10.1109/Transducers50396.2021.9495593
Jagriti Singh, Vaibhav Sharma, S. Chandorkar, P. Sen
Despite extensive studies there are contradictory findings regarding effects of nano-topography on bacterial adherence and viability. Here, we report that bacteria have ability to locate nearest pillars, enabling itself to expand and attach, and pulling these pillars towards itself. Two types of nanopillars, namely, Straight pillars (SP) and Conical pillars (CP) were used to investigate the behavior of bacterial cell on surface nano topographies. We calculated that the force applied by the bacteria on these pillars is in the order of few hundred nano-newtons, and most importantly, the magnitude of the applied force depends on the pillar dimensions. Straight pillars are bent significantly compared to sharp-tipped conical pillars, suggesting higher overall mechanical stress in/throughout the bacterial membrane on straight pillars, leading to membrane rupture and ultimately cell death. In the case of bacterial membrane on conical pillars, severe localized stress generated in the membrane, near the regions where pillars contacted the membrane due to small cross-section of conical pillars, pierces the membrane (no bending of pillars) which causes cell death.
{"title":"Bacterial Force on Nanopillars: Interaction at Single Cell","authors":"Jagriti Singh, Vaibhav Sharma, S. Chandorkar, P. Sen","doi":"10.1109/Transducers50396.2021.9495593","DOIUrl":"https://doi.org/10.1109/Transducers50396.2021.9495593","url":null,"abstract":"Despite extensive studies there are contradictory findings regarding effects of nano-topography on bacterial adherence and viability. Here, we report that bacteria have ability to locate nearest pillars, enabling itself to expand and attach, and pulling these pillars towards itself. Two types of nanopillars, namely, Straight pillars (SP) and Conical pillars (CP) were used to investigate the behavior of bacterial cell on surface nano topographies. We calculated that the force applied by the bacteria on these pillars is in the order of few hundred nano-newtons, and most importantly, the magnitude of the applied force depends on the pillar dimensions. Straight pillars are bent significantly compared to sharp-tipped conical pillars, suggesting higher overall mechanical stress in/throughout the bacterial membrane on straight pillars, leading to membrane rupture and ultimately cell death. In the case of bacterial membrane on conical pillars, severe localized stress generated in the membrane, near the regions where pillars contacted the membrane due to small cross-section of conical pillars, pierces the membrane (no bending of pillars) which causes cell death.","PeriodicalId":6814,"journal":{"name":"2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)","volume":"73 1","pages":"1040-1043"},"PeriodicalIF":0.0,"publicationDate":"2021-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85744866","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 : 2021-06-20DOI: 10.1109/Transducers50396.2021.9495663
V. Shirmohammadli, B. Bahreyni
There is an increasing demand for the recognition of context from sensor data. This is presently achieved through running complicated statistical signal processing algorithms with significant computing and memory requirements. In order to reduce the complexity and power requirements, unconventional computing platforms are being considered, which rely on the responses of the materials or devices instead of digitizing information and processing them. Herein, for the first time to the best of our knowledge, we propose a thermo-computing platform, which can shift much of the complex computations to the sensors. The proposed platform employs an entirely passive network of thermistors for processing temporal data. We present results that confirm the capability of the thermo-computer in processing data. A thermo-computer was then used for processing benchmark data, and its results are compared against algorithmic programming. The proposed platform, in addition to its use as a thermal computer, can lay the foundation for the development of cognizant sensor that utilize thermistor-like devices, such as MOX multi-gas sensors.
{"title":"Development of a Thermo-Computing Platform","authors":"V. Shirmohammadli, B. Bahreyni","doi":"10.1109/Transducers50396.2021.9495663","DOIUrl":"https://doi.org/10.1109/Transducers50396.2021.9495663","url":null,"abstract":"There is an increasing demand for the recognition of context from sensor data. This is presently achieved through running complicated statistical signal processing algorithms with significant computing and memory requirements. In order to reduce the complexity and power requirements, unconventional computing platforms are being considered, which rely on the responses of the materials or devices instead of digitizing information and processing them. Herein, for the first time to the best of our knowledge, we propose a thermo-computing platform, which can shift much of the complex computations to the sensors. The proposed platform employs an entirely passive network of thermistors for processing temporal data. We present results that confirm the capability of the thermo-computer in processing data. A thermo-computer was then used for processing benchmark data, and its results are compared against algorithmic programming. The proposed platform, in addition to its use as a thermal computer, can lay the foundation for the development of cognizant sensor that utilize thermistor-like devices, such as MOX multi-gas sensors.","PeriodicalId":6814,"journal":{"name":"2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)","volume":"141 1","pages":"1307-1310"},"PeriodicalIF":0.0,"publicationDate":"2021-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89216987","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 : 2021-06-20DOI: 10.1109/Transducers50396.2021.9495408
Yating Xie, Keyin Liu, T. Tao
We report a class of biofunctional, self-contractable silk-based electronic threads (e-threads) for skin lifting applications. The e-threads made of silk proteins are hierarchically structured and heterogeneously functionalized towards clinical applications, allowing 1) long-term stability of skin lifting effect, 2) tension sensing, 3) wound inflammatory response reduction and 4) near-infrared heating. The silk e-threads contract by > 18% (adjustable) as it is wetted by body fluid and blood after implantation for effective skin lifting. The e-threads can be used as tension sensor showing excellent responses to contraction, external pressure and bending loading, which allows for real-time monitoring of the lifting stress. As smart medical devices, our work offer insights to smart medical devices for plastic surgery and many other medical applications.
{"title":"Biofunctional and Self-Contractable Silk-Based Sensing Threads","authors":"Yating Xie, Keyin Liu, T. Tao","doi":"10.1109/Transducers50396.2021.9495408","DOIUrl":"https://doi.org/10.1109/Transducers50396.2021.9495408","url":null,"abstract":"We report a class of biofunctional, self-contractable silk-based electronic threads (e-threads) for skin lifting applications. The e-threads made of silk proteins are hierarchically structured and heterogeneously functionalized towards clinical applications, allowing 1) long-term stability of skin lifting effect, 2) tension sensing, 3) wound inflammatory response reduction and 4) near-infrared heating. The silk e-threads contract by > 18% (adjustable) as it is wetted by body fluid and blood after implantation for effective skin lifting. The e-threads can be used as tension sensor showing excellent responses to contraction, external pressure and bending loading, which allows for real-time monitoring of the lifting stress. As smart medical devices, our work offer insights to smart medical devices for plastic surgery and many other medical applications.","PeriodicalId":6814,"journal":{"name":"2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)","volume":"23 1","pages":"491-494"},"PeriodicalIF":0.0,"publicationDate":"2021-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89557466","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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