M. Yabuuchi, M. Morimoto, Y. Tsukamoto, S. Tanaka, Koji Tanaka, Miki Tanaka, K. Nii
{"title":"16 nm FinFET High-k/Metal-gate 256-kbit 6T SRAM macros with wordline overdriven assist","authors":"M. Yabuuchi, M. Morimoto, Y. Tsukamoto, S. Tanaka, Koji Tanaka, Miki Tanaka, K. Nii","doi":"10.1109/IEDM.2014.7046972","DOIUrl":"https://doi.org/10.1109/IEDM.2014.7046972","url":null,"abstract":"We demonstrate 16 nm FinFET High-k/Metal-gate SRAM macros with a wordline (WL) overdriven read/write-assist circuit. Test-chip measurements confirm improved minimum operating voltage (Vmin), standby leakage current, and access time compared to planar bulk CMOS. The proposed assist circuit improves Vmin by 50 mV and improves read-access-time by more than 1.5 times in 256-kbit SRAM macros. Read current (Iread) dependence against the fin diffusion length was observed. An extra design guard-band is needed to provide a reliable operation margin.","PeriodicalId":309325,"journal":{"name":"2014 IEEE International Electron Devices Meeting","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117337543","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}
Liang Zhao, Zizhen Jiang, Hong-Yu Chen, Joon Sohn, Kye L. Okabe, B. Magyari-Kope, H. Wong, Y. Nishi
{"title":"Ultrathin (∼2nm) HfOx as the fundamental resistive switching element: Thickness scaling limit, stack engineering and 3D integration","authors":"Liang Zhao, Zizhen Jiang, Hong-Yu Chen, Joon Sohn, Kye L. Okabe, B. Magyari-Kope, H. Wong, Y. Nishi","doi":"10.1109/IEDM.2014.7046998","DOIUrl":"https://doi.org/10.1109/IEDM.2014.7046998","url":null,"abstract":"This paper addresses the thickness scaling limit of HfOx-based RRAM through a combination of theoretical calculations of electron transport and experimental demonstration of 2nm-HfOx devices. The comparison of 2nm devices with thicker references and bilayer stacks confirm the switching thickness is less than 2nm. The 3D integration of 2nm-HfOx devices enables much larger array size and leads to superior performances compared to planar devices.","PeriodicalId":309325,"journal":{"name":"2014 IEEE International Electron Devices Meeting","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116322591","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":"Bio-MEMS towards single-molecular characterization","authors":"H. Fujita","doi":"10.1109/IEDM.2014.7047145","DOIUrl":"https://doi.org/10.1109/IEDM.2014.7047145","url":null,"abstract":"MEMS devices, which are capable of handling fluids and objects as small as molecules, enabled bio analysis in the ultimate level of a single molecule. This review includes three recent developments: (1) Micromachined tweezers with sharp tips successfully captured a bundle of DNA molecules and allowed realtime observation of DNA degradation dynamics. (2) A rotational bio molecular motor was encapsulated in a fL-chamber. Exact correlation was obtained between rotational speed and ATP production/consumption. (3) A bio motor system, microtubules and kinesin, was reconstructed on a chip. The chip can distinguish normal and abnormal tau-proteins related to Alzheimer's disease.","PeriodicalId":309325,"journal":{"name":"2014 IEEE International Electron Devices Meeting","volume":"222 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127293759","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":"Ab-initio simulations of MoS2 transistors: From mobility calculation to device performance evaluation","authors":"Á. Szabó, R. Rhyner, M. Luisier","doi":"10.1109/IEDM.2014.7047142","DOIUrl":"https://doi.org/10.1109/IEDM.2014.7047142","url":null,"abstract":"In this paper we present the first ab-initio quantum transport simulations of single-layer MoS2 field-effect transistors including electron-phonon scattering. It is shown that the relatively high ON-current and the negative differential resistance observed in previous studies are artifacts of the applied models and not physical effects. Despite a relatively high phonon-limited mobility (220 cm2/Vs) single-layer MoS2 cannot compete with strained-Si or III-V for potential application as high-performance logic switch. Its electron injection velocity ranging from 1.5e6 to 2.6e6 cm/s is too low for that purpose.","PeriodicalId":309325,"journal":{"name":"2014 IEEE International Electron Devices Meeting","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129072427","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}
D. Garbin, O. Bichler, E. Vianello, Q. Rafhay, C. Gamrat, L. Perniola, G. Ghibaudo, B. Desalvo
{"title":"Variability-tolerant Convolutional Neural Network for Pattern Recognition applications based on OxRAM synapses","authors":"D. Garbin, O. Bichler, E. Vianello, Q. Rafhay, C. Gamrat, L. Perniola, G. Ghibaudo, B. Desalvo","doi":"10.1109/IEDM.2014.7047126","DOIUrl":"https://doi.org/10.1109/IEDM.2014.7047126","url":null,"abstract":"Software implementations of artificial Convolutional Neural Networks (CNNs), taking inspiration from biology, are at the state-of-the-art for Pattern Recognition (PR) applications and they are successfully used in commercial products [1]. However, they require power-hungry CPU/GPU to perform convolution operations based on computationally expensive sums of multiplications. This hinders their integration in portable devices. Some full CMOS-based hardware implementations of CNN have been suggested, but they still require the computation of multiplications [2]. In this work, we present for the first time to our knowledge a spike-based hardware implementation of CNN using HfO2 based OxRAM devices as binary synapses. OxRAM devices are chosen for their low switching energy [3] and promising endurance performance [4]. We perform an experimental and theoretical study of the impact of programming conditions at both device and system levels. A complex visual pattern recognition application is demonstrated with a spike-based hierarchical CNN, inspired from the mammalian visual cortex organization. A high accuracy (pattern recognition rate >94%) is obtained for all the tested programming conditions, even if the variability associated to weaker programming conditions is larger.","PeriodicalId":309325,"journal":{"name":"2014 IEEE International Electron Devices Meeting","volume":"749 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126940330","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":"Research into ADAS with driving intelligence for future innovation","authors":"H. Inoue","doi":"10.1109/IEDM.2014.7046962","DOIUrl":"https://doi.org/10.1109/IEDM.2014.7046962","url":null,"abstract":"Japan is facing up to the challenges of a rapidly aging society. In addition to measures to help vitalize this situation, the automotive sector is also working to resolve issues such as congestion and traffic accidents. With this background, this paper introduces two collaborative projects about intelligent vehicle research and development in Japan. The first project aims to develop an intelligent driving system to achieve a safe and secure traffic society for elderly drivers. The main purpose of this project is to realize an intelligent driving system incorporating an experienced driver model to help recover the deterioration in the recognition, decision-making, and operation capabilities of elderly drivers, and to achieve a significant improvement in road safety. The second is the Smart Traffic Flow Control Project. This project focuses on the fact that an advanced driver assistance system (ADAS) with driving intelligence has the potential not only to enhance safe and secure driving but also to reduce congestion. This paper uses these topics to describe perspectives about intelligent vehicle technologies.","PeriodicalId":309325,"journal":{"name":"2014 IEEE International Electron Devices Meeting","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128830986","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":"MEMS for cell mechanobiology","authors":"B. Pruitt","doi":"10.1109/IEDM.2014.7047147","DOIUrl":"https://doi.org/10.1109/IEDM.2014.7047147","url":null,"abstract":"Living organisms generate and respond to mechanical forces and these forces are sensed and created by specialized cells in the body. Force generation and sensing, or more broadly the mechanobiology coupling tissue (cell) mechanics and biology, are essential in normal development, wound healing, and tissue homeostasis. Our mechanical senses of hearing and touch allow us to navigate our environment and interact with one another, yet they remain the least understood of our perceptive senses. Basic life sustaining functions such as breathing, circulation, and digestion are driven autonomously by coordinated contraction of specialized muscle cells, yet how these functions incorporate active feedback via force sensing at the cellular level is an area of active study. Meanwhile, a variety of specialized stretch activated receptors and mechanically mediated biochemical signaling pathways have been identified in recent years. Importantly, defects in proteins of these mechanically mediated pathways and receptors have been implicated in disease states spanning cardiovascular disease, cancer growth and metastasis, neuropathy, and deafness. Thus, understanding the mechanical basis of homeostasis (health) and defective cell renewal function (disease) increasingly requires us to consider the role of mechanics. To study how cells and tissues integrate mechanical signals, we and others have developed specialized cell cultures systems and micromachined tools to stimulate and measure forces and displacements at the scale of proteins and cells. A key feature of such experiments is the ability to observe cell outputs such as morphological changes, protein expression, electrophysiological signaling, force generation and transcriptional activity in response to mechanical stimuli. (Figure 1.).","PeriodicalId":309325,"journal":{"name":"2014 IEEE International Electron Devices Meeting","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125394867","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":"Label-free optical biochemical sensor realized by a novel low-cost bulk-silicon based CMOS-compatible 3-dimensional optoelectronic IC (OEIC) platform","authors":"Junfeng Song, Xianshu Luo, J. Kee, C. Li, G. Lo","doi":"10.1109/IEDM.2014.7047059","DOIUrl":"https://doi.org/10.1109/IEDM.2014.7047059","url":null,"abstract":"We proposed and demonstrated label-free optical biochemical sensor realized on a novel bulk silicon-based platform with three-dimensional (3D) monolithic optoelectronic integration circuit (OEIC). The Ge-photodetector (Ge-PD) is integrated on bulk-silicon. Optical functional components are built with CMOS back-end-of-line (BEOL). Via this platform, the label-free optical biochemical sensor can get rid of the expensive SOI wafer. The costly tunable laser-source can be replaced by low cost wide-band light source. Optical signal is converted into electrical signal and read out by on-chip Ge-PD directly. This platform facilitates the development of cost-effective portable point-of-care (POC) diagnostic tool. Meanwhile, this also opens up new ways of electronic and photonic devices monolithically integration in 3D.","PeriodicalId":309325,"journal":{"name":"2014 IEEE International Electron Devices Meeting","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121397811","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}
Baikui Li, Xi Tang, Q. Jiang, Yunyou Lu, Hanxing Wang, Jiannong Wang, K. J. Chen
{"title":"Schottky-on-heterojunction optoelectronic functional devices realized on AlGaN/GaN-on-Si platform","authors":"Baikui Li, Xi Tang, Q. Jiang, Yunyou Lu, Hanxing Wang, Jiannong Wang, K. J. Chen","doi":"10.1109/IEDM.2014.7047032","DOIUrl":"https://doi.org/10.1109/IEDM.2014.7047032","url":null,"abstract":"We demonstrated that the metal-AlGaN/GaN Schottky diode is capable of producing GaN band-edge ultraviolet (UV) emission at 3.4 eV/364 nm under forward bias larger than ~2 V at room temperature. The underlying mechanism of the hole generation/injection and electroluminescence (EL) processes in this Schottky-on-heterojunction light-emitting diode (SoH-LED) was discussed based on the impact ionization of surface states presented in the (Al)GaN barrier layer. By replacing the conventional ohmic drain with a semitransparent Schottky drain, we demonstrated an AlGaN/GaN high-electron-mobility light-emitting transistor (HEM-LET) in which the drain current and EL emission are controlled simultaneously by gate voltage. Switching operation up to 120 MHz was obtained in SoH-LED to demonstrate its potential in providing high-speed on-chip light sources on the GaN electronic device platform.","PeriodicalId":309325,"journal":{"name":"2014 IEEE International Electron Devices Meeting","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126264146","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}
T. Ueda, H. Handa, Y. Kinoshita, H. Umeda, S. Ujita, Ryo Kajitani, M. Ogawa, Kenichiro Tanaka, T. Morita, S. Tamura, H. Ishida, M. Ishida
{"title":"GaN-based Gate Injection Transistors for power switching applications","authors":"T. Ueda, H. Handa, Y. Kinoshita, H. Umeda, S. Ujita, Ryo Kajitani, M. Ogawa, Kenichiro Tanaka, T. Morita, S. Tamura, H. Ishida, M. Ishida","doi":"10.1109/IEDM.2014.7047031","DOIUrl":"https://doi.org/10.1109/IEDM.2014.7047031","url":null,"abstract":"GaN-based Gate Injection Transistors (GITs) with p-type gate over AlGaN/GaN heterojunction serve normally-off operations with low on-state resistances owing to the conductivity modulation by injection of holes. Established basic technologies on the GIT have shown promising features for switching applications. Further improvement of the performances would extend the applications and lead to the widespread use. In this paper, recent technologies on the GITs to improve the performances and extract the full potential are described. These include extension of the wafer diameter of Si up to 8 inch, InAlGaN quaternary alloy to reduce the series resistances, shortening the gate length to improve the device performances, integration of the gate driver and flip-chip assembly for faster switching.","PeriodicalId":309325,"journal":{"name":"2014 IEEE International Electron Devices Meeting","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114216708","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}