{"title":"Flexible sensors, circuits, and systems for bioelectronic interfacing","authors":"Le Xing, Zixin Wang, Aula A Alwattar, A. Casson","doi":"10.1109/IFETC53656.2022.9948477","DOIUrl":"https://doi.org/10.1109/IFETC53656.2022.9948477","url":null,"abstract":"Bioelectronics is an emerging research area where human-made electronic systems interface, bidirectionally, with the electrical systems present in biology. Flexible electronics are a critical development for bioelectronic systems which can flex and stretch with the body. Printing based manufacturing approaches have been heavily investigated in recent years for creating bioelectronic systems, as screen printing can potentially provide scaled-up roll-to-roll based manufacturing while 3D and inkjet printing can potentially provide opportunities for personalisation. This paper presents a brief narrative review bioelectronics, the materials challenges in flexible sensors, circuits, and systems for bioelectronic interfacing, and examples of our approaches to tackling these challenges.","PeriodicalId":289035,"journal":{"name":"2022 IEEE International Flexible Electronics Technology Conference (IFETC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116918094","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}
{"title":"Mixed-dimensional 2D/3D photodetectors with high performance and new functions","authors":"Chi Liu, Dongming Sun","doi":"10.1109/IFETC53656.2022.9948511","DOIUrl":"https://doi.org/10.1109/IFETC53656.2022.9948511","url":null,"abstract":"Due to its atomic thickness and unique energy band structure, 2D semiconductor materials show unique advantages in the field of photodetector devices. However, its further development calls for improving the detectivity, increasing the array integration density, as well as developing processing technologies with large-area, high-resolution and compatible with mainstream semiconductor processes. Here, using a mixed-dimensional hetero-structure strategy, we demonstrated 2D/3D photodetectors including a double heterojunction photodetector with a record-high detectivity of 9.8×1016 cm Hz1/2 W−1, a photon-controlled diode with a new signal processing behaviour to increase the array integration density, and a 1024-pixel high-performance image sensor array fabricated by a wafer-scale combination patterning method. These photodetectors with high performance and new functions expands the research frontier of mixed-dimensional hetero-structure devices.","PeriodicalId":289035,"journal":{"name":"2022 IEEE International Flexible Electronics Technology Conference (IFETC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132234048","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}
Sachin Rahi, Vivek Raghuwanshi, Pulkit Saxena, Gargi Konwar, S. P. Tiwari
{"title":"Exploration of Promising Polymers and Polyelectrolyte in Inorganic-Organic Bi-layer Gate Dielectrics for Flexible OFETs","authors":"Sachin Rahi, Vivek Raghuwanshi, Pulkit Saxena, Gargi Konwar, S. P. Tiwari","doi":"10.1109/IFETC53656.2022.9948507","DOIUrl":"https://doi.org/10.1109/IFETC53656.2022.9948507","url":null,"abstract":"Promising polyelectrolyte and polymer dielectrics such as PAA, P(VDF-TrFE), or PVP-Co-PMMA are investigated as one of the layers in inorganic high-k/organic bilayer gate dielectric for demonstration of high performance flexible organic field-effect transistors (OFETs). High-k HfO2 was chosen as inorganic gate dielectric in the bilayer combination. The devices with PAA dielectric exhibited better performance compared to other counterparts due to formation of electric double layer, with TIPS-Pentacene as semiconductor. These OFETs exhibited high field-effect mobility (μ) values of ~1.4 cm2 V-1 s-1 in the saturation regime with Ion/Ioff of ~104 for operating voltage of -10V, along with high cyclic stability.","PeriodicalId":289035,"journal":{"name":"2022 IEEE International Flexible Electronics Technology Conference (IFETC)","volume":"166 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115936630","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}
Yuhao Zhou, Kai Zhang, Minghao Wang, Mengfei Xu, Xiaoli You, Honglong Chang, Jingquan Liu, Bowen Ji
{"title":"Flexible micro-ECoG electrodes based on bacterial cellulose substrate with ultrasoftness and long-lasting moisture","authors":"Yuhao Zhou, Kai Zhang, Minghao Wang, Mengfei Xu, Xiaoli You, Honglong Chang, Jingquan Liu, Bowen Ji","doi":"10.1109/IFETC53656.2022.9948526","DOIUrl":"https://doi.org/10.1109/IFETC53656.2022.9948526","url":null,"abstract":"Flexible micro-ECoG electrodes are widely used in the diagnosis and treatment of neurological diseases, and the stable contact between the electrodes and cortex will directly affect the quality of signal acquisition. The ultra-low Young’s modulus and fractal structure are further beneficial to the conformal contact. In this work, a separate micro-ECoG electrode array based on the bacterial cellulose substrate was proposed, with the promising characterization of ultrasoftness and long-lasting moisture, as well as the position accuracy of electrode sites.","PeriodicalId":289035,"journal":{"name":"2022 IEEE International Flexible Electronics Technology Conference (IFETC)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117288224","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}
Muhammad Naeem Shah, C. A. T. Tee, B. Yeop Majlis, Faheem Ullah Khan, Shahzad Afzal, Tariq Aziz, Yeo Wey Ping, Tg Hasnan Tg Abdul Aziz, Ahmad Rifqi Md Zain
{"title":"Ultra-Sensitive Pyerene Based of Room Temperature (RT) Organic Small Molecule Ammonia Detecting Sensor","authors":"Muhammad Naeem Shah, C. A. T. Tee, B. Yeop Majlis, Faheem Ullah Khan, Shahzad Afzal, Tariq Aziz, Yeo Wey Ping, Tg Hasnan Tg Abdul Aziz, Ahmad Rifqi Md Zain","doi":"10.1109/IFETC53656.2022.9948469","DOIUrl":"https://doi.org/10.1109/IFETC53656.2022.9948469","url":null,"abstract":"For environmental and human health reasons, developing an efficient organic small molecule sensor (OSMS) with rapid, sensitive, and selective sensing of ammonia (NH3) is critical. This paper describes a Py-based gas sensor for ammonia (NH3) detection and sensing at RT. Spectroscopic and structural characterizations validated the effective production of the Py. The Py-based constructed device structure sensor displayed remarkable detection sensitivity for NH3 at concentrations as low as 10 ppm, The appealing sensing properties of NH3 at room temperature are owing to H2O pre-doping in Py and NH3 interaction to terminal electron-rich ester groups on pyerene molecule. In contrast to earlier reported organic conducting materials sensor demonstrated very long-term stability and high sensitivity to NH3, as well as surprising selectivity towards ammonia when compared to formaldehyde, methanol, ethanol, and benzene. The Py-based sensor demonstrated good ammonia detection capability, with maximum 60% response which could be helpful in real world applications.","PeriodicalId":289035,"journal":{"name":"2022 IEEE International Flexible Electronics Technology Conference (IFETC)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114767764","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}
Xu Liang, Tao He, G. Wang, Yabin Zheng, Jian Zhao, Yong Lian
{"title":"Energy-efficient Body-channel Communication for Distributed Flexible Sensors","authors":"Xu Liang, Tao He, G. Wang, Yabin Zheng, Jian Zhao, Yong Lian","doi":"10.1109/IFETC53656.2022.9948503","DOIUrl":"https://doi.org/10.1109/IFETC53656.2022.9948503","url":null,"abstract":"The combination of body channel communication (BCC) and flexible electronics has potential to realize long-term, accurate and secure monitoring of the distributed vital signs. In this work, we demonstrate a BCC system, which employs OOK modulation and UART protocol to reduce the system complexity. And a redundancy correction method is adopted to reduce the probability of collision during N-to-1 communication. The maximum data rate achieves 100 kbps during experiment.","PeriodicalId":289035,"journal":{"name":"2022 IEEE International Flexible Electronics Technology Conference (IFETC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128161164","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}
{"title":"Computational Design of Flexible Organic Porous Nanotubes","authors":"Guangzheng Yi, Ai Fu, Yuan Li","doi":"10.1109/IFETC53656.2022.9948483","DOIUrl":"https://doi.org/10.1109/IFETC53656.2022.9948483","url":null,"abstract":"We report a computational design of flexible organic nanotube based on a monolayer of C2N-h2D, a highly-conductive porous two-dimensional covalent-organic framework. The organic nanotubes show well flexibility, high electron mobility and conductivity, and excellent thermal stability. This study demonstrates the potentials of organic nanotubes for applications in flexible electronics.","PeriodicalId":289035,"journal":{"name":"2022 IEEE International Flexible Electronics Technology Conference (IFETC)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127106057","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}
Jianle Lin, Huimin Li, Anqi Li, Bo Jiang, Xinghui Liu, Kai Wang
{"title":"A Flexible Tactile Sensor Interfaced with a TFT Analog Front-end for Material Texture Recognition","authors":"Jianle Lin, Huimin Li, Anqi Li, Bo Jiang, Xinghui Liu, Kai Wang","doi":"10.1109/IFETC53656.2022.9948518","DOIUrl":"https://doi.org/10.1109/IFETC53656.2022.9948518","url":null,"abstract":"We propose a flexible tactile sensor with a TFT-based analog front-end as its sensor interface. Since the sensor is very sensitive to weak and dynamic force stimuli, subtle difference in textures can be converted to difference in force characteristics. Hence, material with different texture and roughness can be recognized. Further, tactile intelligence complementary to computer vision can be then achieved.","PeriodicalId":289035,"journal":{"name":"2022 IEEE International Flexible Electronics Technology Conference (IFETC)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123768041","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}
Minghao Wang, Minyi Jin, Fan Ye, Jiahui Xu, Bowen Ji, Yin Chen, Yuhua Cheng, Gaofeng Wang
{"title":"An Active Neural Optrode With Metal Shielding Laser Diode and Electrochemical Modified Microelectrodes for Low Noise Optogenetics","authors":"Minghao Wang, Minyi Jin, Fan Ye, Jiahui Xu, Bowen Ji, Yin Chen, Yuhua Cheng, Gaofeng Wang","doi":"10.1109/IFETC53656.2022.9948437","DOIUrl":"https://doi.org/10.1109/IFETC53656.2022.9948437","url":null,"abstract":"This paper reports an active neural optrode with metal shielding laser diode (LD) and electrochemical modified microelectrodes. Compared to state of the art, for the first time, this work combines electromagnetic shielding, transient pulse shaping and interface modification to reduce the amplitude of stimulus-induced noise, including electromagnetic interference, photovoltaic noise and photoelectrochemical noise, to less than 50 microvolts. The proposed neural optrode has broad prospects in the application of neural recording and stimulation with low noise and high signal-to-noise ratio.","PeriodicalId":289035,"journal":{"name":"2022 IEEE International Flexible Electronics Technology Conference (IFETC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124967233","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}