Pub Date : 2018-08-01DOI: 10.1109/IFETC.2018.8583915
Ranran Wang, Yin Cheng, Jing Sun
The fragility of traditional metallic or semi-conductive materials hinders their application in flexible electronics. Low dimensional materials including carbon nanotubes, graphene and metal nanowires own outstanding flexibility and have been wildly used to fabricate flexible devices. Bendable/stretchable substrate is another key component of flexible electronics. Various thin polymer films made of polyethylene terephthalate, polyimide, polydimethylsiloxane et. al. were adopted. However, the air impermeability of these substrates will cause discomfort of humanbeing if applied in wearable electronics. Fiber is an ideal substrate for flexible and wearable electronics due to its excellent flexibility/stretchability, superior breathability, abundant microstructure and low cost. Herein, a series of conductive elastomers and strain sensors were fabricated by combining the low dimensional conductive materials with fiber substrates and regulating the microstructure on the interface. With the help of “twining spring” hierarchical architecture, silver nanowire-double covered yarn (Ag NW-DCY) composite fibers with ultrahigh stretchability were obtained. The conductivity of the composite fibers reached up to 104 S/cm and remained 90% at 2000% tensile strain. Commercial electronic components (LED arrays) were integrated onto a transparent, foldable and stretchable substrate using the composite fibers as stretchable electric wiring, demonstrating the potential application in large-area stretchable electronics. When AgNWs were replaced with graphene, strain sensing fiber with high sensitivity and large working range (100% strain) were fabricated, which enabled the detection of multiple deformation forms, including tensile strain, bending, and torsion. We employ the fibers as wearable sensors, realizing the monitoring of full-range human activities and intricate movement combinations of a robot. Besides, these fibers exhibits fast response, low hysteresis and excellent cycling stability. Another advantage needs to be noted is that these fiber are fabricated by a facial dip coating method, which can be scaled up easily. These smart fibers are of great meaning to the development of flexible and wearable electronics.
{"title":"Smart Fibers Based on Low Dimensional Conductive Materials","authors":"Ranran Wang, Yin Cheng, Jing Sun","doi":"10.1109/IFETC.2018.8583915","DOIUrl":"https://doi.org/10.1109/IFETC.2018.8583915","url":null,"abstract":"The fragility of traditional metallic or semi-conductive materials hinders their application in flexible electronics. Low dimensional materials including carbon nanotubes, graphene and metal nanowires own outstanding flexibility and have been wildly used to fabricate flexible devices. Bendable/stretchable substrate is another key component of flexible electronics. Various thin polymer films made of polyethylene terephthalate, polyimide, polydimethylsiloxane et. al. were adopted. However, the air impermeability of these substrates will cause discomfort of humanbeing if applied in wearable electronics. Fiber is an ideal substrate for flexible and wearable electronics due to its excellent flexibility/stretchability, superior breathability, abundant microstructure and low cost. Herein, a series of conductive elastomers and strain sensors were fabricated by combining the low dimensional conductive materials with fiber substrates and regulating the microstructure on the interface. With the help of “twining spring” hierarchical architecture, silver nanowire-double covered yarn (Ag NW-DCY) composite fibers with ultrahigh stretchability were obtained. The conductivity of the composite fibers reached up to 104 S/cm and remained 90% at 2000% tensile strain. Commercial electronic components (LED arrays) were integrated onto a transparent, foldable and stretchable substrate using the composite fibers as stretchable electric wiring, demonstrating the potential application in large-area stretchable electronics. When AgNWs were replaced with graphene, strain sensing fiber with high sensitivity and large working range (100% strain) were fabricated, which enabled the detection of multiple deformation forms, including tensile strain, bending, and torsion. We employ the fibers as wearable sensors, realizing the monitoring of full-range human activities and intricate movement combinations of a robot. Besides, these fibers exhibits fast response, low hysteresis and excellent cycling stability. Another advantage needs to be noted is that these fiber are fabricated by a facial dip coating method, which can be scaled up easily. These smart fibers are of great meaning to the development of flexible and wearable electronics.","PeriodicalId":6609,"journal":{"name":"2018 International Flexible Electronics Technology Conference (IFETC)","volume":"3 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75116597","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 : 2018-08-01DOI: 10.1109/IFETC.2018.8583855
Philippe Descent, R. Izquierdo
Printed electronics is more and more used for the fabrication of devices in multiple fields like wearable, disposable and health domains. Benefits of using these technics are mainly guided by the reduction of manufacturing cost, the possibility to print on flexible substrates and to deposit a large variety of materials. Here, we present the adaptation of the printing technic of thermal transfer using a donor ribbon for the deposition of metal layers. Flexible hybrid printed antennas were made by using this technic. Their characterizations and S-parameter tests are shown. These flexible antennas can be easily integrated to more complex circuits which may include sensors and other components and lead to hybrid portable devices able to monitor human condition, such on a smart bandage or on a on-skin glucometer.
{"title":"Thermal Transfer Printing with Donor Ribbon for Flexible Hybrid RFID Antenna Fabrication","authors":"Philippe Descent, R. Izquierdo","doi":"10.1109/IFETC.2018.8583855","DOIUrl":"https://doi.org/10.1109/IFETC.2018.8583855","url":null,"abstract":"Printed electronics is more and more used for the fabrication of devices in multiple fields like wearable, disposable and health domains. Benefits of using these technics are mainly guided by the reduction of manufacturing cost, the possibility to print on flexible substrates and to deposit a large variety of materials. Here, we present the adaptation of the printing technic of thermal transfer using a donor ribbon for the deposition of metal layers. Flexible hybrid printed antennas were made by using this technic. Their characterizations and S-parameter tests are shown. These flexible antennas can be easily integrated to more complex circuits which may include sensors and other components and lead to hybrid portable devices able to monitor human condition, such on a smart bandage or on a on-skin glucometer.","PeriodicalId":6609,"journal":{"name":"2018 International Flexible Electronics Technology Conference (IFETC)","volume":"2 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84169459","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 : 2018-08-01DOI: 10.1109/IFETC.2018.8583956
Bing Hu, Liang Ma, Su‐Hao Liu, Debo Guo
A new method that separates a film of SiC with a GaN epi layer from the main body of a substrate is presented in this paper. The method uses proton implantation to generate an ion damaged layer underneath the surface of the SiC substrate. A GaN epi functional layer is deposited on the SiC substrate after the ion implantation. Without bonding the wafer to any other wafer, a stress inducing layer is applied on the GaN layer to separate the GaN layer and the SiC film from the main body of substrate at previously introduced ion damage layer.
{"title":"Separation of a Functional Film from a SiC Substrate by Ion Cut without Bonding","authors":"Bing Hu, Liang Ma, Su‐Hao Liu, Debo Guo","doi":"10.1109/IFETC.2018.8583956","DOIUrl":"https://doi.org/10.1109/IFETC.2018.8583956","url":null,"abstract":"A new method that separates a film of SiC with a GaN epi layer from the main body of a substrate is presented in this paper. The method uses proton implantation to generate an ion damaged layer underneath the surface of the SiC substrate. A GaN epi functional layer is deposited on the SiC substrate after the ion implantation. Without bonding the wafer to any other wafer, a stress inducing layer is applied on the GaN layer to separate the GaN layer and the SiC film from the main body of substrate at previously introduced ion damage layer.","PeriodicalId":6609,"journal":{"name":"2018 International Flexible Electronics Technology Conference (IFETC)","volume":"9 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82599602","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 : 2018-08-01DOI: 10.1109/IFETC.2018.8583936
Takaaki Kamigaki, Yuki Ninomiya, H. Shinoda
This paper proposes a structure of airborne ultrasound transducer based on an electrostatic force with a back support mesh. The proposed transducer can be fabricated by laminating flexible materials. As the first step, we fabricated a prototype of a 6.4-mm-diameter circular transducer. In the experiments at 44 kHz, we obtained 55 % electro-acoustic energy conversion efficiency and 8.7 Pa sound pressure at 20 cm from the device. These basic properties suggest the feasibility of the flexible sheet-like airborne phased array usable in nonlinear acoustics applications.
{"title":"Electrostatically Driven Airborne Ultrasound Transmitter with Fine Mesh Electrode","authors":"Takaaki Kamigaki, Yuki Ninomiya, H. Shinoda","doi":"10.1109/IFETC.2018.8583936","DOIUrl":"https://doi.org/10.1109/IFETC.2018.8583936","url":null,"abstract":"This paper proposes a structure of airborne ultrasound transducer based on an electrostatic force with a back support mesh. The proposed transducer can be fabricated by laminating flexible materials. As the first step, we fabricated a prototype of a 6.4-mm-diameter circular transducer. In the experiments at 44 kHz, we obtained 55 % electro-acoustic energy conversion efficiency and 8.7 Pa sound pressure at 20 cm from the device. These basic properties suggest the feasibility of the flexible sheet-like airborne phased array usable in nonlinear acoustics applications.","PeriodicalId":6609,"journal":{"name":"2018 International Flexible Electronics Technology Conference (IFETC)","volume":"13 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78948118","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 : 2018-08-01DOI: 10.1109/IFETC.2018.8583998
Amirhossein Shahshahani, S. Bhadra, Z. Zilic
Flexible hybrid electronics integrate both rigid electronics and printed materials on a flexible substrate. This integration results in high performance from thin, lightweight and flexible devices. In this paper, we propose a flexible hybrid sensor as part of a respiratory monitoring system. The sensor utilizes a PZT-4 ultrasound piezo transducer to track the motion of the diaphragm, diaphragmatic pleura and chest wall in order to find the respiratory cycles. Experimental results show that the respiratory signal obtained with the sensor matches very well with the respiratory signal monitored with an SPR-BTA spirometer.
{"title":"A Piezo Transducer Based Flexible Hybrid Sensor for Health Monitoring","authors":"Amirhossein Shahshahani, S. Bhadra, Z. Zilic","doi":"10.1109/IFETC.2018.8583998","DOIUrl":"https://doi.org/10.1109/IFETC.2018.8583998","url":null,"abstract":"Flexible hybrid electronics integrate both rigid electronics and printed materials on a flexible substrate. This integration results in high performance from thin, lightweight and flexible devices. In this paper, we propose a flexible hybrid sensor as part of a respiratory monitoring system. The sensor utilizes a PZT-4 ultrasound piezo transducer to track the motion of the diaphragm, diaphragmatic pleura and chest wall in order to find the respiratory cycles. Experimental results show that the respiratory signal obtained with the sensor matches very well with the respiratory signal monitored with an SPR-BTA spirometer.","PeriodicalId":6609,"journal":{"name":"2018 International Flexible Electronics Technology Conference (IFETC)","volume":"17 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85156587","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 : 2018-08-01DOI: 10.1109/IFETC.2018.8584004
M. Hussain
We live in a world where electronics play critical enabling role. Specifically, matured and advanced CMOS technology with its arts and science of miniaturization has propelled variety of CMOS devices to a level where their lofty performance over cost benefit has ushered into a wide range of application spectrum ranging from computers to display to today’s home automation. Going forward we may want to ask ourselves a few important questions: 1. Can CMOS technology be expanded further to add new functionalities to CMOS devices while retaining their existing attributes in tact? 2. Whether this exercise will have a better functionalities over cost metric? 3. If the first two questions are addressed well, whether the existing applications will be strengthened and/or diversified? Whether new applications may emerge?
{"title":"Integration Strategy for Heterogeneously Integrated Wearable and Implantable Electronics","authors":"M. Hussain","doi":"10.1109/IFETC.2018.8584004","DOIUrl":"https://doi.org/10.1109/IFETC.2018.8584004","url":null,"abstract":"We live in a world where electronics play critical enabling role. Specifically, matured and advanced CMOS technology with its arts and science of miniaturization has propelled variety of CMOS devices to a level where their lofty performance over cost benefit has ushered into a wide range of application spectrum ranging from computers to display to today’s home automation. Going forward we may want to ask ourselves a few important questions: 1. Can CMOS technology be expanded further to add new functionalities to CMOS devices while retaining their existing attributes in tact? 2. Whether this exercise will have a better functionalities over cost metric? 3. If the first two questions are addressed well, whether the existing applications will be strengthened and/or diversified? Whether new applications may emerge?","PeriodicalId":6609,"journal":{"name":"2018 International Flexible Electronics Technology Conference (IFETC)","volume":"51 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81503677","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 : 2018-08-01DOI: 10.1109/IFETC.2018.8584015
Haoran Wu, J. Rosas, K. Lian
The performance of solid, thin and flexible electrochemical capacitors (ECs) under different bending conditions were investigated. The bending parameters include bending angle, bending radius and bending cycle. While the bending angle does not affect the performance of the solid EC cells significantly, small bending radius increases the cell resistance from a delamination at the current collector/electrode interface. A large bending cycle causes a severe self-discharging by losing mechanical protection at the electrolyte/separator layer. The layer is pierced through, creating localized contacts between electrodes which lead to a high leakage current. The electrode/electrolyte interface remains relatively intact under various bending conditions. The investigation of these parameters together with cross-sectional analyses provide a systematic understanding of the failure mechanism of thin and flexible ECs under bending. Although the approach was demonstrated on a sandwiched solid EC cell with a commercial activated carbon and a neutral pH polymer electrolyte, it can be extended for quantified investigations of mechanical properties of general solid flexible electrochemical devices.
{"title":"Bending Properties of Solid Thin Flexible Energy Storage Devices","authors":"Haoran Wu, J. Rosas, K. Lian","doi":"10.1109/IFETC.2018.8584015","DOIUrl":"https://doi.org/10.1109/IFETC.2018.8584015","url":null,"abstract":"The performance of solid, thin and flexible electrochemical capacitors (ECs) under different bending conditions were investigated. The bending parameters include bending angle, bending radius and bending cycle. While the bending angle does not affect the performance of the solid EC cells significantly, small bending radius increases the cell resistance from a delamination at the current collector/electrode interface. A large bending cycle causes a severe self-discharging by losing mechanical protection at the electrolyte/separator layer. The layer is pierced through, creating localized contacts between electrodes which lead to a high leakage current. The electrode/electrolyte interface remains relatively intact under various bending conditions. The investigation of these parameters together with cross-sectional analyses provide a systematic understanding of the failure mechanism of thin and flexible ECs under bending. Although the approach was demonstrated on a sandwiched solid EC cell with a commercial activated carbon and a neutral pH polymer electrolyte, it can be extended for quantified investigations of mechanical properties of general solid flexible electrochemical devices.","PeriodicalId":6609,"journal":{"name":"2018 International Flexible Electronics Technology Conference (IFETC)","volume":"1 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88846086","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 : 2018-08-01DOI: 10.1109/IFETC.2018.8584021
Yong‐Young Noh
We report printed flexible optoelectronic biological sensors composed of red organic light emitting diodes (OLEDs) and red and infrared organic photodiodes (OPDs) for detection of various biological signals in a photo-plethysmograph (PPG) device. To achieve infra-red (NIR) light detection, we have developed low band gap conjugated polymers as electron donor and intermixed with various electron acceptors to form bulk heterojunction morphology for photoactive layer. The developed NIR OPD sensor showed high EQE over 30 % at 1000 nm wavelength and photosensitivity. The flexible RED OLEDs with conjugated polymer emitters has been achieved maximum luminance > 10,000 cd/m2 at 9 V, with peak at 640 nm. PPG signals were successfully detected using the developed flexible PPG sensor and conventional driving circuit. Human studies were conducted to evaluate the flexible PPG sensor performance in practical applications. Subject drowsiness was estimated from heart rate variability, extracted from the PPG signals, using machine learning algorithms. The flexible PPG sensor achieved 79.2% accuracy and 72.1% area under receiver (AUC) to predict drowsiness (60 sec window), which are meaningful results compared with conventional PPG sensors (83.3% accuracy and 69.0% AUC). Drowsiness estimation experiments using two PPG signals showed the flexible PPG sensor achieved similar or better performance to conventional PPG sensors.
{"title":"Development of High Performance Infrared Printed Photodiodes for Biological Signal Detection","authors":"Yong‐Young Noh","doi":"10.1109/IFETC.2018.8584021","DOIUrl":"https://doi.org/10.1109/IFETC.2018.8584021","url":null,"abstract":"We report printed flexible optoelectronic biological sensors composed of red organic light emitting diodes (OLEDs) and red and infrared organic photodiodes (OPDs) for detection of various biological signals in a photo-plethysmograph (PPG) device. To achieve infra-red (NIR) light detection, we have developed low band gap conjugated polymers as electron donor and intermixed with various electron acceptors to form bulk heterojunction morphology for photoactive layer. The developed NIR OPD sensor showed high EQE over 30 % at 1000 nm wavelength and photosensitivity. The flexible RED OLEDs with conjugated polymer emitters has been achieved maximum luminance > 10,000 cd/m2 at 9 V, with peak at 640 nm. PPG signals were successfully detected using the developed flexible PPG sensor and conventional driving circuit. Human studies were conducted to evaluate the flexible PPG sensor performance in practical applications. Subject drowsiness was estimated from heart rate variability, extracted from the PPG signals, using machine learning algorithms. The flexible PPG sensor achieved 79.2% accuracy and 72.1% area under receiver (AUC) to predict drowsiness (60 sec window), which are meaningful results compared with conventional PPG sensors (83.3% accuracy and 69.0% AUC). Drowsiness estimation experiments using two PPG signals showed the flexible PPG sensor achieved similar or better performance to conventional PPG sensors.","PeriodicalId":6609,"journal":{"name":"2018 International Flexible Electronics Technology Conference (IFETC)","volume":"54 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85249641","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 : 2018-08-01DOI: 10.1109/IFETC.2018.8583857
Sharvari Dhote, K. Behdinan, J. Bian
The fast development and expansion of the robotics field and biomedical application in the last several decades have generated a growing interest in the flexible tactile sensing solutions. In this experimental study, the flexible sensor material is characterized by utilizing piezoresistive mechanism based on quantum tunneling composites. With attention to pressure-sensitivity of this composite, the effect of nickel powder filler ratio and sample thickness are systematically investigated. Electrical resistance and sensitivity of the QTC depend on the concentration and shape of nickel powder. There is a lower threshold of nickel powder concentration for the QTC to be sensitive under 500N force applied. With increasing nickel powder concentration, an elasticity of the QTC decreases, but stability, reproducibility, and sensitivity of the composite improved.
{"title":"Characterization of the Repeatability and Sensitivity of the Quantum Tunneling Composites","authors":"Sharvari Dhote, K. Behdinan, J. Bian","doi":"10.1109/IFETC.2018.8583857","DOIUrl":"https://doi.org/10.1109/IFETC.2018.8583857","url":null,"abstract":"The fast development and expansion of the robotics field and biomedical application in the last several decades have generated a growing interest in the flexible tactile sensing solutions. In this experimental study, the flexible sensor material is characterized by utilizing piezoresistive mechanism based on quantum tunneling composites. With attention to pressure-sensitivity of this composite, the effect of nickel powder filler ratio and sample thickness are systematically investigated. Electrical resistance and sensitivity of the QTC depend on the concentration and shape of nickel powder. There is a lower threshold of nickel powder concentration for the QTC to be sensitive under 500N force applied. With increasing nickel powder concentration, an elasticity of the QTC decreases, but stability, reproducibility, and sensitivity of the composite improved.","PeriodicalId":6609,"journal":{"name":"2018 International Flexible Electronics Technology Conference (IFETC)","volume":"22 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73404465","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 : 2018-08-01DOI: 10.1109/IFETC.2018.8584017
Taeil Kim, Kevin Andrews, W. Kim
This report presents 3D printed flexible coreless transformers, which can be used in RF band for various applications such as voltage conversion and impedance matching for maximizing power transfer. Two types of transformers composed of a pair of coil inductors with opposing and complementary windings were printed on flexible polyimide film by using a 3D printer. Behaviors of printed transformers were simulated with parameters such as mutual inductance, coupling factor, power gain with 3D transformer models. And then, inductance value were compared with measured one.
{"title":"3D Printed Flexible Coreless Transformers","authors":"Taeil Kim, Kevin Andrews, W. Kim","doi":"10.1109/IFETC.2018.8584017","DOIUrl":"https://doi.org/10.1109/IFETC.2018.8584017","url":null,"abstract":"This report presents 3D printed flexible coreless transformers, which can be used in RF band for various applications such as voltage conversion and impedance matching for maximizing power transfer. Two types of transformers composed of a pair of coil inductors with opposing and complementary windings were printed on flexible polyimide film by using a 3D printer. Behaviors of printed transformers were simulated with parameters such as mutual inductance, coupling factor, power gain with 3D transformer models. And then, inductance value were compared with measured one.","PeriodicalId":6609,"journal":{"name":"2018 International Flexible Electronics Technology Conference (IFETC)","volume":"389 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74936872","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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