Pub Date : 2019-03-01DOI: 10.1109/ISDCS.2019.8719089
I. Maity, P. Bhattacharyya
The current paper aims about the study of alcohol sensing performance in surface modified TiO2 nanoflowers based binary hybrid devices, incorporating Pd and rGO as a secondary material for surface modification, separately. Two types of binary hybrid composite were studied. In one, the surface of pristine TiO2 nanoflowers was modified by noble metal catalyst Pd (Pd-TNFs). Whereas, for the other case, the surface of the pristine structure was decorated by 2D material rGO (rGO-TNFs). To authenticate, the structural and morphological properties of the hybrid structure, the following characterizations viz. FESEM, XRD and Raman spectroscopy were performed. Methanol and ethanol were used here as the test VOCs in the concentration range of 10-700 ppm for the hybrid sensor devices. The sensing performance was studied in the temperature range of $27^{circ}mathrm{C}-180^{circ}mathrm{C}$ and the corresponding transient characteristics of the hybrid devices were given at optimum temperature only. It was revealed from the above study that in between ethanol and methanol, the sensing performance in terms of response magnitude was promising towards ethanol compared to methanol, for these hybrid devices. Moreover, the methanol sensing performance was significantly improved in these hybrid structures compared to its pristine TiO2 nanoflowers counterpart due to the surface modification techniques.
{"title":"Potentiallity of Surface Modified TiO2 Nanoflowers for Alcohol Sensing Application","authors":"I. Maity, P. Bhattacharyya","doi":"10.1109/ISDCS.2019.8719089","DOIUrl":"https://doi.org/10.1109/ISDCS.2019.8719089","url":null,"abstract":"The current paper aims about the study of alcohol sensing performance in surface modified TiO2 nanoflowers based binary hybrid devices, incorporating Pd and rGO as a secondary material for surface modification, separately. Two types of binary hybrid composite were studied. In one, the surface of pristine TiO2 nanoflowers was modified by noble metal catalyst Pd (Pd-TNFs). Whereas, for the other case, the surface of the pristine structure was decorated by 2D material rGO (rGO-TNFs). To authenticate, the structural and morphological properties of the hybrid structure, the following characterizations viz. FESEM, XRD and Raman spectroscopy were performed. Methanol and ethanol were used here as the test VOCs in the concentration range of 10-700 ppm for the hybrid sensor devices. The sensing performance was studied in the temperature range of $27^{circ}mathrm{C}-180^{circ}mathrm{C}$ and the corresponding transient characteristics of the hybrid devices were given at optimum temperature only. It was revealed from the above study that in between ethanol and methanol, the sensing performance in terms of response magnitude was promising towards ethanol compared to methanol, for these hybrid devices. Moreover, the methanol sensing performance was significantly improved in these hybrid structures compared to its pristine TiO2 nanoflowers counterpart due to the surface modification techniques.","PeriodicalId":293660,"journal":{"name":"2019 2nd International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123174188","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 : 2019-03-01DOI: 10.1109/ISDCS.2019.8719095
T. Maiti, S. Dutta, Y. Ochi, M. Miura-Mattausch, S. Bhattacharya, H. Mattausch
This paper presents a power estimation platform, based on a multi-domain power consumption system including electrical, mechanical, and coupled electro-mechanical powers for the development of power efficient robots. The platform considers the mutual combination of the multi-physics subsystems, which enables to optimize the total robot-power efficiency. We focus on the joint interactions between electrical and mechanical domains (example: electro-mechanical interaction in a servo motor) and the resulting power loss. As an example, the power dissipation of a biped robot for a gait cycle is estimated. Thus platform usability for developing power efficient humanoid robots is demonstrated.
{"title":"Power Consumption Estimation of Biped Robot During Walking","authors":"T. Maiti, S. Dutta, Y. Ochi, M. Miura-Mattausch, S. Bhattacharya, H. Mattausch","doi":"10.1109/ISDCS.2019.8719095","DOIUrl":"https://doi.org/10.1109/ISDCS.2019.8719095","url":null,"abstract":"This paper presents a power estimation platform, based on a multi-domain power consumption system including electrical, mechanical, and coupled electro-mechanical powers for the development of power efficient robots. The platform considers the mutual combination of the multi-physics subsystems, which enables to optimize the total robot-power efficiency. We focus on the joint interactions between electrical and mechanical domains (example: electro-mechanical interaction in a servo motor) and the resulting power loss. As an example, the power dissipation of a biped robot for a gait cycle is estimated. Thus platform usability for developing power efficient humanoid robots is demonstrated.","PeriodicalId":293660,"journal":{"name":"2019 2nd International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"195 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115964618","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 : 2019-03-01DOI: 10.1109/ISDCS.2019.8719252
T. Uruma, T. Tabei, S. Yokoyama, Y. Amemiya, Tadashi Sato, S. Yamada, K. Okada
A new integration technology of optical waveguides and photodiodes using evanescent light is proposed and we have succeeded in amplification of the photodiode signal with the CMOS operational amplifiers in the same Si substrate.
{"title":"Hybrid Integration of Photonic Devices and CMOS Amplifiers","authors":"T. Uruma, T. Tabei, S. Yokoyama, Y. Amemiya, Tadashi Sato, S. Yamada, K. Okada","doi":"10.1109/ISDCS.2019.8719252","DOIUrl":"https://doi.org/10.1109/ISDCS.2019.8719252","url":null,"abstract":"A new integration technology of optical waveguides and photodiodes using evanescent light is proposed and we have succeeded in amplification of the photodiode signal with the CMOS operational amplifiers in the same Si substrate.","PeriodicalId":293660,"journal":{"name":"2019 2nd International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"59 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131922760","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 : 2019-03-01DOI: 10.1109/ISDCS.2019.8719100
J. Maeda, Riku Funamoto, Y. Amemiya, S. Yokoyama
We fabricated biosensors using silicon resonators for detection of biomaterials. The ripple caused by Fabry-Perot resonance is one of the big problems. In order to suppress this phenomenon, we applied the anti-reflective coating to the biosensor devices and examined its effect.
{"title":"Effect of Anti-Reflective Coating for Si Optical Resonator Biosensors","authors":"J. Maeda, Riku Funamoto, Y. Amemiya, S. Yokoyama","doi":"10.1109/ISDCS.2019.8719100","DOIUrl":"https://doi.org/10.1109/ISDCS.2019.8719100","url":null,"abstract":"We fabricated biosensors using silicon resonators for detection of biomaterials. The ripple caused by Fabry-Perot resonance is one of the big problems. In order to suppress this phenomenon, we applied the anti-reflective coating to the biosensor devices and examined its effect.","PeriodicalId":293660,"journal":{"name":"2019 2nd International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115682589","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 : 2019-03-01DOI: 10.1109/ISDCS.2019.8719267
Sagnik Bhar, Annapurna Mondal, S. Srimani, I. Hatai, Subhajit Das, K. Ghosh, H. Rahaman
A driver circuit of an analog-to-digital converter (ADC) is one of the critical parts which influences the transient response, frequency response and the noise floor of the system. To satisfy the accuracy and speed requirements, a modified differential difference amplifier (DDA) Common Mode Feedback (CMFB) circuit is designed along with a folded cascode op-amp with a supply voltage of 1. 8V. The entire system is designed in CADENCE Virtuoso using 180nm technology library. Different parametric and statistical simulations have been performed to test its viability under the influence of mismatches and variations of different process parameters and temperature.
{"title":"A low power driver amplifier for Fully Differential ADC","authors":"Sagnik Bhar, Annapurna Mondal, S. Srimani, I. Hatai, Subhajit Das, K. Ghosh, H. Rahaman","doi":"10.1109/ISDCS.2019.8719267","DOIUrl":"https://doi.org/10.1109/ISDCS.2019.8719267","url":null,"abstract":"A driver circuit of an analog-to-digital converter (ADC) is one of the critical parts which influences the transient response, frequency response and the noise floor of the system. To satisfy the accuracy and speed requirements, a modified differential difference amplifier (DDA) Common Mode Feedback (CMFB) circuit is designed along with a folded cascode op-amp with a supply voltage of 1. 8V. The entire system is designed in CADENCE Virtuoso using 180nm technology library. Different parametric and statistical simulations have been performed to test its viability under the influence of mismatches and variations of different process parameters and temperature.","PeriodicalId":293660,"journal":{"name":"2019 2nd International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124276116","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 : 2019-03-01DOI: 10.1109/ISDCS.2019.8719093
Y. Miyaoku, M. Miura-Mattausch, A. Tone, H. Mattausch, K. Matsuura, D. Ikoma
The trench-type IGBT has been intensively investigated for very high-voltage applications. Our purpose in this study is to clarify the switching features of the IGBT for developing an accurate compact model, which can predict the switching losses accurately. The main focus is therefore given on the carrier dynamics within the device during switching. It is demonstrated that the ambipolar feature of the bipolar function of IGBT leads to a fast carrier response during the switching. The large amount of the majority-carrier existence realizes this rapid reaction of the carrier dynamics in response to the switching condition.
{"title":"Analysis of IGBT Charging/Discharging Mechanism for Accurate Compact Modeling","authors":"Y. Miyaoku, M. Miura-Mattausch, A. Tone, H. Mattausch, K. Matsuura, D. Ikoma","doi":"10.1109/ISDCS.2019.8719093","DOIUrl":"https://doi.org/10.1109/ISDCS.2019.8719093","url":null,"abstract":"The trench-type IGBT has been intensively investigated for very high-voltage applications. Our purpose in this study is to clarify the switching features of the IGBT for developing an accurate compact model, which can predict the switching losses accurately. The main focus is therefore given on the carrier dynamics within the device during switching. It is demonstrated that the ambipolar feature of the bipolar function of IGBT leads to a fast carrier response during the switching. The large amount of the majority-carrier existence realizes this rapid reaction of the carrier dynamics in response to the switching condition.","PeriodicalId":293660,"journal":{"name":"2019 2nd International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115260847","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 : 2019-03-01DOI: 10.1109/ISDCS.2019.8719248
Ajay Kumar Chowdhary, S. Srimani, Subhajit Das, K. Ghosh, H. Rahaman
The efficiency in terms of accuracy, power consumption, and on-chip area of Successive Approximation Register (SAR) Analog to Digital Converter (ADC) depends on the charge-redistribution Digital to Analog Converter (DAC). Thus, the optimal design of SAR ADC demands accurate design and analysis of the DAC unit. In this work, a MATLAB model of charge-redistribution DAC based on Binary Weighted with attenuation capacitor array has been presented for the design of a SAR ADC. This MATLAB based model performs statistical as well as parametric simulations including the effects of parasitic capacitances and capacitor mismatch which help in the accurate estimation of static and dynamic non-linearity of the DAC unit.
{"title":"Estimation of non-linear effects for Capacitive DAC in SAR ADC: An Analytical Model","authors":"Ajay Kumar Chowdhary, S. Srimani, Subhajit Das, K. Ghosh, H. Rahaman","doi":"10.1109/ISDCS.2019.8719248","DOIUrl":"https://doi.org/10.1109/ISDCS.2019.8719248","url":null,"abstract":"The efficiency in terms of accuracy, power consumption, and on-chip area of Successive Approximation Register (SAR) Analog to Digital Converter (ADC) depends on the charge-redistribution Digital to Analog Converter (DAC). Thus, the optimal design of SAR ADC demands accurate design and analysis of the DAC unit. In this work, a MATLAB model of charge-redistribution DAC based on Binary Weighted with attenuation capacitor array has been presented for the design of a SAR ADC. This MATLAB based model performs statistical as well as parametric simulations including the effects of parasitic capacitances and capacitor mismatch which help in the accurate estimation of static and dynamic non-linearity of the DAC unit.","PeriodicalId":293660,"journal":{"name":"2019 2nd International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130152672","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 : 2019-03-01DOI: 10.1109/ISDCS.2019.8719254
K. Yamada, G. Cong, M. Okano, Y. Maegami, M. Ohno, Keijiro Suzuki, S. Suda, R. Konoike, K. Ikeda, H. Kawashima, T. Horikawa, S. Namiki, M. Mori, S. Kita, K. Nozaki, A. Shinya, M. Notomi
State-of-the-art 300-mm-wafer-based silicon photonics technology features superior fabrication accuracy, in-wafer uniformity, and reproducibility. Using this technology, various photonic devices, such as a large-scale optical switch matrix with a very low energy consumption, high-efficiency optical modulators, are developed for energy-efficient network systems. Novel functional photonic circuits, such as those for optical path-gate logic processing are now being developed. These photonic devices and circuits will be key elements in the energy-efficient and advanced information systems.
{"title":"A 300-mm-wafer silicon photonics technology for advanced information systems","authors":"K. Yamada, G. Cong, M. Okano, Y. Maegami, M. Ohno, Keijiro Suzuki, S. Suda, R. Konoike, K. Ikeda, H. Kawashima, T. Horikawa, S. Namiki, M. Mori, S. Kita, K. Nozaki, A. Shinya, M. Notomi","doi":"10.1109/ISDCS.2019.8719254","DOIUrl":"https://doi.org/10.1109/ISDCS.2019.8719254","url":null,"abstract":"State-of-the-art 300-mm-wafer-based silicon photonics technology features superior fabrication accuracy, in-wafer uniformity, and reproducibility. Using this technology, various photonic devices, such as a large-scale optical switch matrix with a very low energy consumption, high-efficiency optical modulators, are developed for energy-efficient network systems. Novel functional photonic circuits, such as those for optical path-gate logic processing are now being developed. These photonic devices and circuits will be key elements in the energy-efficient and advanced information systems.","PeriodicalId":293660,"journal":{"name":"2019 2nd International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122490057","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 : 2019-03-01DOI: 10.1109/ISDCS.2019.8719260
Kyosuke Kageyama, T. Kumaki, T. Koide
The use of digital images has become quite widespread in legal, medical, and private contexts. However, anyone can easily edit or manipulate any digital image on a computer. Thus, an effective method for detecting digital image manipulation is required for retaining authenticity. Image-manipulation detection is applied in investigations of crimes and photographic evidence. In this paper, we describe a technique for detecting a manipulated image by morphological pattern spectrum. Before we have researched morphological pattern spectrum detected manipulation. We propose the new technique which counts a number of the same scale as the structuring element scale by morphological pattern spectrum in an image. So it can judge a manipulated image in detail because the new technique can detect the number of a manipulated scale. Thus, even if the previous technique judge a large different in the pattern spectrum between the original image and the manipulated image, the new technique can judge to be actually small manipulation.
{"title":"Structuring Element-counting Approach for Morphological Pattern Spectrum-based Image Manipulation Detection","authors":"Kyosuke Kageyama, T. Kumaki, T. Koide","doi":"10.1109/ISDCS.2019.8719260","DOIUrl":"https://doi.org/10.1109/ISDCS.2019.8719260","url":null,"abstract":"The use of digital images has become quite widespread in legal, medical, and private contexts. However, anyone can easily edit or manipulate any digital image on a computer. Thus, an effective method for detecting digital image manipulation is required for retaining authenticity. Image-manipulation detection is applied in investigations of crimes and photographic evidence. In this paper, we describe a technique for detecting a manipulated image by morphological pattern spectrum. Before we have researched morphological pattern spectrum detected manipulation. We propose the new technique which counts a number of the same scale as the structuring element scale by morphological pattern spectrum in an image. So it can judge a manipulated image in detail because the new technique can detect the number of a manipulated scale. Thus, even if the previous technique judge a large different in the pattern spectrum between the original image and the manipulated image, the new technique can judge to be actually small manipulation.","PeriodicalId":293660,"journal":{"name":"2019 2nd International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126105005","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 : 2019-03-01DOI: 10.1109/ISDCS.2019.8719278
Anakhi Hazarika, Soumyajit Poddar, H. Rahaman
Convolutional Neural Network (CNN) is a type of deep neural networks that are commonly used for object detection and classification. State-of-the-art hardware for training and inference of CNN architectures require a considerable amount of computation and memory intensive resources. CNN achieves greater accuracy at the cost of high computational complexity and large power consumption. To optimize the memory requirement, processing speed and power, it is crucial to design more efficient accelerator architecture for CNN computation. In this work, an overlap of spatially adjacent data is exploited in order to parallelize the movement of data. A fast, re-configurable hardware accelerator architecture along with optimized kernel design suitable for a variety of CNN models is proposed. Our design achieves 2.1x computational benefits over state-of the-art accelerator architectures.
{"title":"Hardware Efficient Convolution Processing Unit for Deep Neural Networks","authors":"Anakhi Hazarika, Soumyajit Poddar, H. Rahaman","doi":"10.1109/ISDCS.2019.8719278","DOIUrl":"https://doi.org/10.1109/ISDCS.2019.8719278","url":null,"abstract":"Convolutional Neural Network (CNN) is a type of deep neural networks that are commonly used for object detection and classification. State-of-the-art hardware for training and inference of CNN architectures require a considerable amount of computation and memory intensive resources. CNN achieves greater accuracy at the cost of high computational complexity and large power consumption. To optimize the memory requirement, processing speed and power, it is crucial to design more efficient accelerator architecture for CNN computation. In this work, an overlap of spatially adjacent data is exploited in order to parallelize the movement of data. A fast, re-configurable hardware accelerator architecture along with optimized kernel design suitable for a variety of CNN models is proposed. Our design achieves 2.1x computational benefits over state-of the-art accelerator architectures.","PeriodicalId":293660,"journal":{"name":"2019 2nd International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116782379","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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