Article
Computer Science, Hardware & Architecture
Wen Cheng, Yuqi Zou, Lingfang Zeng, Yang Wang
Summary: The paper introduces a hybrid storage system called Hercules, which combines dual-mode flash memory and hard drive disk to improve storage performance through intelligent data division and migration. The results show that it can effectively improve data access speed and reduce response time.
Article
Physics, Applied
Dongseok Kwon, Hyeongsu Kim, Kyu-Ho Lee, Joon Hwang, Wonjun Shin, Jong-Ho Bae, Sung Yun Woo, Jong-Ho Lee
Summary: This work proposes positive feedback (PF) device-based synaptic devices for reliable binary neural networks (BNNs). The fabricated PF device shows a high on/off current ratio (2.69 x 10(7)) due to PF operation. The PF device has a charge-trap layer for adjusting the turn-on voltage (V-on) through program/erase operations and implementing long-term memory function. The steep switching characteristics of the PF device provide tolerance to retention time and turn-on voltage variation, enabling high accuracy (88.44% for CIFAR-10 image classification) in hardware-based BNNs using PF devices as synapses.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Marta Bagatin, Simone Gerardin, Alessandro Paccagnella, Alessandra Costantino, Veronique Ferlet-Cavrois, Anastasia Pesce, Silvia Beltrami
Summary: This study investigates the heavy-ion single event effect (SEE) response of 3-D NAND flash memory cells with charge-trap-based replacement gate technology. It discusses the error cross sections, threshold voltage shifts, and underlying mechanisms. The behavior of the RG cells is compared with previous generations of flash NAND memory cells with floating-gate architecture, both planar and 3-D. The study also examines the cell array structure, technology parameters, and materials affecting radiation susceptibility of different cell types.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Yingge Li, Guojun Han, Sanwei Huang, Chang Liu, Meng Zhang, Fei Wu
Summary: This paper proposes a solution to improve the reliability and reduce the cost of implementing flash memories. A pre-processing method is used to reduce the number of scanning voltage steps, reducing the time and energy consumption of multiple read operations. The proposed single state asynchronous estimation (SSAE) method is shown to reduce computational and space overhead compared to the two-state asynchronous estimation (TSAE) method, and it also reduces RBER without exact knowledge of noise.
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS
(2023)
Article
Mathematics
Hristo Kostadinov, Nikolai Manev
Summary: Memory devices based on floating-gate transistors have become the dominant technology for non-volatile storage devices. Errors observed in flash memory devices are typically of a special, asymmetric type, and integer codes have been shown to be effective in correcting them. This paper presents a new construction of integer codes capable of correcting single errors typical for flash memory devices.
Article
Materials Science, Multidisciplinary
Akihiko Aoyagi, Barry Stipe, Roger Wood, Steven Campbell, Xiaodong Che
Summary: This paper describes the history and advantages of helium-sealed HDDs, and discusses the future prospects of sealed-drive technology.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jiaqiang Li, Zhicheng Zhang, Ya Kong, Binwei Yao, Chen Yin, Lianming Tong, Xudong Chen, Tongbu Lu, Jin Zhang
Summary: A new strategy for preparing GDY film was proposed, leading to the successful fabrication of a GDY optoelectronic memory with multi-bit storage capability, showing excellent charge storage and photoresponse. The device exhibits over 256 distinct storage levels, with signal-to-noise ratios greater than 100, and demonstrates robust bending stability.
Review
Chemistry, Analytical
Alessandro S. Spinelli, Gerardo Malavena, Andrea L. Lacaita, Christian Monzio Compagnoni
Summary: This paper reviews the phenomenology of random telegraph noise (RTN) in 3D NAND Flash arrays, discussing the impact of polycrystalline silicon channels and the transition from planar to 3D architectures on RTN dependences. Experimental data are presented and explained through theoretical and simulation models, highlighting the role of highly-defective grain boundaries and localized nature of RTN traps in percolative current transport.
Article
Engineering, Electrical & Electronic
Hwanjin Yong, Joonwon Lee, Jin-Soo Kim
Summary: The paper introduces a new concept of virtual stream management architecture vStream, aiming to improve the performance of NAND flash-based SSDs and reduce the cost of garbage collection in SSDs. A virtual stream management mechanism is proposed, and an enhanced garbage collection scheme vStream-aware GC is implemented to increase the benefits of multi-streamed SSDs.
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS
(2021)
Article
Computer Science, Hardware & Architecture
Xiaoliu Feng, Xianzhang Chen, Ruolan Li, Jiali Li, Chunlin Song, Duo Liu, Yujuan Tan, Lei Qiao
Summary: This study proposes a revenue model based cross-layer cooperative discarding mechanism, called CoDiscard, to optimize I/O performance and reduce write amplification. By selecting high performance-price-ratio TRIM commands and using a cross-layer cooperative scheme, write amplification can be significantly reduced and performance improved.
JOURNAL OF SYSTEMS ARCHITECTURE
(2022)
Article
Computer Science, Information Systems
Yinglin Zhao, Jianlei Yang, Bing Li, Xingzhou Cheng, Xucheng Ye, Xueyan Wang, Xiaotao Jia, Zhaohao Wang, Youguang Zhang, Weisheng Zhao
Summary: To address the performance and efficiency issues of running large-scale datasets on traditional computing systems, a NAND-SPIN-based PIM architecture is proposed for efficient convolutional neural network (CNN) acceleration. A straightforward data mapping scheme is employed to improve parallelism and reduce data movements. Experimental results demonstrate that the approach achieves similar to 2.6x speedup and similar to 1.4x improvement in energy efficiency compared to state-of-the-art PIM solutions.
SCIENCE CHINA-INFORMATION SCIENCES
(2023)
Review
Chemistry, Multidisciplinary
Ju Yong Park, Duk-Hyun Choe, Dong Hyun Lee, Geun Taek Yu, Kun Yang, Se Hyun Kim, Geun Hyeong Park, Seung-Geol Nam, Hyun Jae Lee, Sanghyun Jo, Bong Jin Kuh, Daewon Ha, Yongsung Kim, Jinseong Heo, Min Hyuk Park
Summary: The research on ferroelectric memories has been limited in the past due to scalability and compatibility issues. However, the discovery of ferroelectricity in certain oxides has revived interest in the field. The potential of inducing nanoscale nonvolatility in gate insulators has been demonstrated. However, technical limitations and variations in reliability need to be addressed for practical applications in various types of devices.
ADVANCED MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Seungmin Lee, Joonsung Lim, Jun Hyoung Kim, Sunghwan Cho, Yong Kyu Lee, Byoungdeog Choi
Summary: This study proposes a novel cell array structure suitable for hybrid bonding technology in 3-D NAND architecture, allowing for the removal of dummy cell area and increase in bit density. The proposed method for programming this structure utilizes the asymmetric GIDL phenomenon for string selection and inhibition, potentially improving V-PASS disturbance.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Engineering, Electrical & Electronic
Matchima Buddhanoy, Preeti Kumari, Umeshwarnath Surendranathan, Maryla Wasiolek, Khalid Hattar, Biswajit Ray
Summary: This article evaluates the data retention characteristics of irradiated multilevel-cell NAND flash memories and proposes two strategies to improve their performance.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2022)
Article
Chemistry, Physical
Tomasz Skrzekut, Maciej Wedrychowicz, Andrzej Piotrowicz
Summary: The paper presents a comparison study on two methods of recycling aluminum from HDD platters – the melting method and the method of plastic consolidation. The study involved examining the composition and properties of HDD memory components, specifically the data carriers (platters), through various tests and analysis. The results provide insights into the performance characteristics of the materials under different recycling methods.