Pub Date : 2020-08-16DOI: 10.1109/FLEPS49123.2020.9239472
Igor Titov, M. Köpke, M. Gerken
The refractive index (RI) of liquids plays an important role in chemical analysis and medical diagnostics. Here, we present the integration of a flexible substrate with 6 blue organic light emitting diodes (OLEDs) and 6 organic photodetectors (OPDs) with a flexible microfluidic system formed in polydimethylsiloxane (PDMS). The devices are fabricated by masked thermal evaporation on a $200 mu mathrm{m}$ thick polyethylene terephthalate (PET) foil. The individual size of the organic devices is 1 mm x 1 mm. Successful operation of the OLED-OPD matrix for refractive index measurements is demonstrated. This system is intended for RI monitoring of multiple analytes or for analyzing a single analyte with a distributed concentration.
液体的折射率(RI)在化学分析和医学诊断中起着重要作用。在这里，我们提出了6个蓝色有机发光二极管(oled)和6个有机光电探测器(opd)的柔性衬底与聚二甲基硅氧烷(PDMS)形成的柔性微流控系统的集成。该器件是在$200 mu mathm {m}$厚的聚对苯二甲酸乙二醇酯(PET)箔上通过掩膜热蒸发制备的。有机器件的单个尺寸为1mm × 1mm。演示了OLED-OPD矩阵折射率测量的成功操作。该系统用于多种分析物的RI监测或用于分析具有分布浓度的单一分析物。
{"title":"Refractive Index Measurement with a Flexible OLED-OPD Detection Unit","authors":"Igor Titov, M. Köpke, M. Gerken","doi":"10.1109/FLEPS49123.2020.9239472","DOIUrl":"https://doi.org/10.1109/FLEPS49123.2020.9239472","url":null,"abstract":"The refractive index (RI) of liquids plays an important role in chemical analysis and medical diagnostics. Here, we present the integration of a flexible substrate with 6 blue organic light emitting diodes (OLEDs) and 6 organic photodetectors (OPDs) with a flexible microfluidic system formed in polydimethylsiloxane (PDMS). The devices are fabricated by masked thermal evaporation on a $200 mu mathrm{m}$ thick polyethylene terephthalate (PET) foil. The individual size of the organic devices is 1 mm x 1 mm. Successful operation of the OLED-OPD matrix for refractive index measurements is demonstrated. This system is intended for RI monitoring of multiple analytes or for analyzing a single analyte with a distributed concentration.","PeriodicalId":101496,"journal":{"name":"2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125684015","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 : 2020-08-16DOI: 10.1109/FLEPS49123.2020.9239531
C. Occhiuzzi, S. Parrella, G. Marrocco
A flexible dual chip UHF RFID epidermal sensor tag is here proposed for monitoring human body temperature. A multi-mode square loop configuration has been loaded by two orthogonal matching elements whose position and shape are such to simultaneously optimize the reading performance of both ICs. Thanks to the presence of two independent sensors, the device is able to perform differential measurements respect to the body position (the acquisition points are slightly delocalized) and to the external environment. The device is hence a concept of a single heat-flux thermometer to be used to estimate the core temperature of the body.
{"title":"Flexible Dual chip on-skin RFID Sensor for Body Temperature Monitoring","authors":"C. Occhiuzzi, S. Parrella, G. Marrocco","doi":"10.1109/FLEPS49123.2020.9239531","DOIUrl":"https://doi.org/10.1109/FLEPS49123.2020.9239531","url":null,"abstract":"A flexible dual chip UHF RFID epidermal sensor tag is here proposed for monitoring human body temperature. A multi-mode square loop configuration has been loaded by two orthogonal matching elements whose position and shape are such to simultaneously optimize the reading performance of both ICs. Thanks to the presence of two independent sensors, the device is able to perform differential measurements respect to the body position (the acquisition points are slightly delocalized) and to the external environment. The device is hence a concept of a single heat-flux thermometer to be used to estimate the core temperature of the body.","PeriodicalId":101496,"journal":{"name":"2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130409911","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 : 2020-08-16DOI: 10.1109/FLEPS49123.2020.9239553
Adamos Christou, R. Dahiya
This paper presents the design and implementation of a touch interactive 3D surface using frustrated total internal reflection (FTIR). Using a simple and scalable approach, the touch sensing is enabled all around a transparent acrylic pyramid surface. The developed system steers away from the conventional flat touch surfaces thus enabling touch-based control of applications such as volumetric holographic displays. The potential of presented system also lies in gesture-based control of holographic displays.
{"title":"Touch Interactive 3D Surfaces","authors":"Adamos Christou, R. Dahiya","doi":"10.1109/FLEPS49123.2020.9239553","DOIUrl":"https://doi.org/10.1109/FLEPS49123.2020.9239553","url":null,"abstract":"This paper presents the design and implementation of a touch interactive 3D surface using frustrated total internal reflection (FTIR). Using a simple and scalable approach, the touch sensing is enabled all around a transparent acrylic pyramid surface. The developed system steers away from the conventional flat touch surfaces thus enabling touch-based control of applications such as volumetric holographic displays. The potential of presented system also lies in gesture-based control of holographic displays.","PeriodicalId":101496,"journal":{"name":"2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133729328","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 : 2020-08-16DOI: 10.1109/FLEPS49123.2020.9239440
J. I. Rodriguez-Labra, C. Kosik, D. Maddipatla, B. B. Narakathu, M. Atashbar
Wearable devices with integrated sensors for tracking human vitals are widely used for a variety of applications, including exercise, wellness, and health monitoring. Photoplethysmography (PPG) sensors use pulse oximetry to measure pulse rate, cardiac cycle, oxygen saturation, and blood flow by passing a beam of variable wavelength through the skin and measuring its reflection. A multichannel PPG wearable system was developed to include multiple nodes of pulse oximeters, each capable of using different wavelengths of light. The system used sensor fusion to perform feature extraction of relevant cardiovascular metrics across multiple pulse oximeters. The wearable system was applied to the plant of the foot for vascular assessment. Wearable PPG systems capable of sensor fusion show promise as continuous methods for the evaluation of wounds and diseases associated with abnormal blood flow.
{"title":"Development of a PPG Sensor Array as a Wearable Device to Monitor Cardiovascular Metrics","authors":"J. I. Rodriguez-Labra, C. Kosik, D. Maddipatla, B. B. Narakathu, M. Atashbar","doi":"10.1109/FLEPS49123.2020.9239440","DOIUrl":"https://doi.org/10.1109/FLEPS49123.2020.9239440","url":null,"abstract":"Wearable devices with integrated sensors for tracking human vitals are widely used for a variety of applications, including exercise, wellness, and health monitoring. Photoplethysmography (PPG) sensors use pulse oximetry to measure pulse rate, cardiac cycle, oxygen saturation, and blood flow by passing a beam of variable wavelength through the skin and measuring its reflection. A multichannel PPG wearable system was developed to include multiple nodes of pulse oximeters, each capable of using different wavelengths of light. The system used sensor fusion to perform feature extraction of relevant cardiovascular metrics across multiple pulse oximeters. The wearable system was applied to the plant of the foot for vascular assessment. Wearable PPG systems capable of sensor fusion show promise as continuous methods for the evaluation of wounds and diseases associated with abnormal blood flow.","PeriodicalId":101496,"journal":{"name":"2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132161492","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 : 2020-08-16DOI: 10.1109/FLEPS49123.2020.9239461
Adamos Christou, Fengyuan Liu, R. Dahiya
Quasi-1D nanowires (NWs) have shown a great potential for the large-area flexible electronics due to their excellent electronic and optoelectronic properties and high mechanical flexibility. The growth of high-quality NWs often requires a high temperature process, which is incompatible with most of flexible substrates. In this regard, a printing strategy has been adopted to decouple the synthesis process from thermally sensitive polymeric substrates. This paper presents a detailed study on the selective printing of NWs using contact printing. In situ scanning electron microscope (SEM) characterizations have been employed here to illustrate the robustness of printed NWs after carrying out various standard microfabrication processes. This study improves our understanding of the NW printing process and lays a strong foundation for the realization of devices and systems such as electronic skin using the NW printing approach.
{"title":"Assessing the Stability of Printed NWs by in situ SEM Characterisation","authors":"Adamos Christou, Fengyuan Liu, R. Dahiya","doi":"10.1109/FLEPS49123.2020.9239461","DOIUrl":"https://doi.org/10.1109/FLEPS49123.2020.9239461","url":null,"abstract":"Quasi-1D nanowires (NWs) have shown a great potential for the large-area flexible electronics due to their excellent electronic and optoelectronic properties and high mechanical flexibility. The growth of high-quality NWs often requires a high temperature process, which is incompatible with most of flexible substrates. In this regard, a printing strategy has been adopted to decouple the synthesis process from thermally sensitive polymeric substrates. This paper presents a detailed study on the selective printing of NWs using contact printing. In situ scanning electron microscope (SEM) characterizations have been employed here to illustrate the robustness of printed NWs after carrying out various standard microfabrication processes. This study improves our understanding of the NW printing process and lays a strong foundation for the realization of devices and systems such as electronic skin using the NW printing approach.","PeriodicalId":101496,"journal":{"name":"2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114563734","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 : 2020-08-16DOI: 10.1109/FLEPS49123.2020.9239529
Emre Ozer, Jedrzej Kufel, J. Biggs, James Myers, Charles Reynolds, Gavin Brown, Anjit Rana, A. Sou, C. Ramsdale, Scott White
This paper presents the development of a binary neural network (BNN) hardware in metal-oxide thin film transistor (TFT) technology on a flexible substrate. We develop the BNN for a sweat odour application that takes data from an e-nose sensor array detecting odour, and classifies the odour. We demonstrate a fully functional BNN flexible integrated circuit (FlexIC) fabricated in $0.8 mu mathrm{m}$ n-type metal-oxide TFT on polyimide, consuming around 1mW power, which becomes the first neural network hardware built as a FlexIC.
本文介绍了柔性衬底金属氧化物薄膜晶体管(TFT)技术中二元神经网络(BNN)硬件的发展。我们为汗液气味应用开发了BNN，该应用从检测气味的电子鼻传感器阵列获取数据，并对气味进行分类。我们展示了一个全功能的BNN柔性集成电路(FlexIC)，该电路采用$0.8 mu mathm {m}$ n型金属氧化物TFT在聚酰亚胺上制造，功耗约为1mW，成为第一个用FlexIC构建的神经网络硬件。
{"title":"Binary Neural Network as a Flexible Integrated Circuit for Odour Classification","authors":"Emre Ozer, Jedrzej Kufel, J. Biggs, James Myers, Charles Reynolds, Gavin Brown, Anjit Rana, A. Sou, C. Ramsdale, Scott White","doi":"10.1109/FLEPS49123.2020.9239529","DOIUrl":"https://doi.org/10.1109/FLEPS49123.2020.9239529","url":null,"abstract":"This paper presents the development of a binary neural network (BNN) hardware in metal-oxide thin film transistor (TFT) technology on a flexible substrate. We develop the BNN for a sweat odour application that takes data from an e-nose sensor array detecting odour, and classifies the odour. We demonstrate a fully functional BNN flexible integrated circuit (FlexIC) fabricated in $0.8 mu mathrm{m}$ n-type metal-oxide TFT on polyimide, consuming around 1mW power, which becomes the first neural network hardware built as a FlexIC.","PeriodicalId":101496,"journal":{"name":"2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114302771","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 : 2020-08-16DOI: 10.1109/FLEPS49123.2020.9239471
Yu-Hao Jen, Chia-Tso Mo, Yu-Wen Chen, C. Lo
In this study, the material of the dielectric layer was changed to reduce the structural rigidity of a capacitive tactile sensor, achieving the result of increasing the detection sensitivity without affecting the spatial resolution. Simulation and experimental results showed that the sensitivity of the sensor can be greatly improved by changing the elastomeric dielectric layer from a solid structure to a hollow structure. When the normal force was 0.25 N, the average detection sensitivity of the hollow structure was 32 pF/ N. Compared with the solid counterpart, the sensitivity was increased by roughly 600 times. When the shear force was 1.5 N, the average detection sensitivity of the hollow structure was 0.1 pF/N. Compared with the solid counterpart, it showed an improvement of at least five times regardless of the shear angle. In addition, the measured shear angle exhibited a tolerance of no more than 4°, which was similar to the announced sensors.
{"title":"Multifunction Force Sensor with Hollow Structure","authors":"Yu-Hao Jen, Chia-Tso Mo, Yu-Wen Chen, C. Lo","doi":"10.1109/FLEPS49123.2020.9239471","DOIUrl":"https://doi.org/10.1109/FLEPS49123.2020.9239471","url":null,"abstract":"In this study, the material of the dielectric layer was changed to reduce the structural rigidity of a capacitive tactile sensor, achieving the result of increasing the detection sensitivity without affecting the spatial resolution. Simulation and experimental results showed that the sensitivity of the sensor can be greatly improved by changing the elastomeric dielectric layer from a solid structure to a hollow structure. When the normal force was 0.25 N, the average detection sensitivity of the hollow structure was 32 pF/ N. Compared with the solid counterpart, the sensitivity was increased by roughly 600 times. When the shear force was 1.5 N, the average detection sensitivity of the hollow structure was 0.1 pF/N. Compared with the solid counterpart, it showed an improvement of at least five times regardless of the shear angle. In addition, the measured shear angle exhibited a tolerance of no more than 4°, which was similar to the announced sensors.","PeriodicalId":101496,"journal":{"name":"2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116506603","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 : 2020-08-16DOI: 10.1109/FLEPS49123.2020.9239548
X. Zhang, A. K. Bose, D. Maddipatla, S. Masihi, V. Palaniappan, M. Panahi, B. B. Narakathu, M. Atashbar
A novel multi-walled carbon nanotubes (MWCNTs) and polydimethylsiloxane (PDMS) based resistive force sensor was fabricated using screen printing and laser-pattering processes for detecting various applied forces. The electrodes for the force sensor was developed by depositing silver (Ag) ink on a flexible polyimide substrate using screen printing process. The honey comb structured and unstructured active sensing layers of the force sensors were prepared by laser patterning the MWCNT/PDMS composite. A surface roughness of $1.65 pm 0.10 mumathrm{m}$ and $0.43 pm 0.08 mumathrm{m}$ was measured for the printed electrodes and MWCNT/PDMS, respectively. The capability of the printed sensor was investigated by subjecting it to varying forces ranging from 0 N (no force) to 20 N. The results demonstrated an overall relative resistance change of ~19% and ~5% for the force sensors with honey comb structured and un structured active layers. The fabrication method and sensor responses are analyzed and presented in this paper.
采用丝网印刷和激光刻印技术制备了一种新型的多壁碳纳米管(MWCNTs)和聚二甲基硅氧烷(PDMS)电阻式力传感器。采用丝网印刷工艺将银(Ag)油墨沉积在柔性聚酰亚胺基板上，开发了力传感器电极。利用激光对MWCNT/PDMS复合材料进行图像化处理，制备了力传感器的蜂窝状结构和非结构有源传感层。印刷电极和MWCNT/PDMS的表面粗糙度分别为$1.65 pm 0.10 mu mathm {m}$和$0.43 pm 0.08 mu mathm {m}$。在0 N(无力)到20 N的不同作用力下，研究了印刷传感器的性能。结果表明，蜂窝结构和非结构化有源层的力传感器的总体相对阻力变化分别为19%和5%。本文分析并介绍了其制作方法和传感器响应。
{"title":"Development of a Novel and Flexible MWCNT/PDMS Based Resistive Force Sensor","authors":"X. Zhang, A. K. Bose, D. Maddipatla, S. Masihi, V. Palaniappan, M. Panahi, B. B. Narakathu, M. Atashbar","doi":"10.1109/FLEPS49123.2020.9239548","DOIUrl":"https://doi.org/10.1109/FLEPS49123.2020.9239548","url":null,"abstract":"A novel multi-walled carbon nanotubes (MWCNTs) and polydimethylsiloxane (PDMS) based resistive force sensor was fabricated using screen printing and laser-pattering processes for detecting various applied forces. The electrodes for the force sensor was developed by depositing silver (Ag) ink on a flexible polyimide substrate using screen printing process. The honey comb structured and unstructured active sensing layers of the force sensors were prepared by laser patterning the MWCNT/PDMS composite. A surface roughness of $1.65 pm 0.10 mumathrm{m}$ and $0.43 pm 0.08 mumathrm{m}$ was measured for the printed electrodes and MWCNT/PDMS, respectively. The capability of the printed sensor was investigated by subjecting it to varying forces ranging from 0 N (no force) to 20 N. The results demonstrated an overall relative resistance change of ~19% and ~5% for the force sensors with honey comb structured and un structured active layers. The fabrication method and sensor responses are analyzed and presented in this paper.","PeriodicalId":101496,"journal":{"name":"2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114572116","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 : 2020-08-16DOI: 10.1109/fleps49123.2020.9239476
{"title":"[FLEPS 2020 Copyright notice]","authors":"","doi":"10.1109/fleps49123.2020.9239476","DOIUrl":"https://doi.org/10.1109/fleps49123.2020.9239476","url":null,"abstract":"","PeriodicalId":101496,"journal":{"name":"2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131843500","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 : 2020-08-16DOI: 10.1109/FLEPS49123.2020.9239428
D. Shakthivel, Adamos Christou, R. Dahiya
Vapour-Liquid-Solid (VLS) growth mechanism is a popular method for the growth of inorganic semiconducting nanowires (NWs) in the diameter range of sub-100 nm. A kinetic model is presented for the growth of elemental (Si) and binary $(SiO_{mathrm{x}})$ NWs by incorporating all the atomistic parameters. Importantly, the model connects the macroscopic experimental parameters such as temperature, pressure and catalyst particle with atomistic aspects such as supersaturation, energy barriers and interface diffusivity. The thermodynamic driving force for the NWs growth is estimated by balancing various injection-ejection processes occurring at the catalyst droplet. Using the kinetic framework, the steady state Si concentration in the Au-Si droplet is estimated for the catalyst diameter in the range of 10-100nm. The calculated NWs growth rates were observed to be within an order of magnitude in comparision with the experimentally measured values.
{"title":"Kinetic Analysis of the VLS Growth of Semiconducting Nanowires","authors":"D. Shakthivel, Adamos Christou, R. Dahiya","doi":"10.1109/FLEPS49123.2020.9239428","DOIUrl":"https://doi.org/10.1109/FLEPS49123.2020.9239428","url":null,"abstract":"Vapour-Liquid-Solid (VLS) growth mechanism is a popular method for the growth of inorganic semiconducting nanowires (NWs) in the diameter range of sub-100 nm. A kinetic model is presented for the growth of elemental (Si) and binary $(SiO_{mathrm{x}})$ NWs by incorporating all the atomistic parameters. Importantly, the model connects the macroscopic experimental parameters such as temperature, pressure and catalyst particle with atomistic aspects such as supersaturation, energy barriers and interface diffusivity. The thermodynamic driving force for the NWs growth is estimated by balancing various injection-ejection processes occurring at the catalyst droplet. Using the kinetic framework, the steady state Si concentration in the Au-Si droplet is estimated for the catalyst diameter in the range of 10-100nm. The calculated NWs growth rates were observed to be within an order of magnitude in comparision with the experimentally measured values.","PeriodicalId":101496,"journal":{"name":"2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121152645","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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