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相关概念视频

MOS Capacitor01:25

MOS Capacitor

982
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
982
Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

435
A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
435
Understanding Memory01:19

Understanding Memory

638
Memory is the retention of information or experiences over time, facilitated through three main processes: encoding, storage, and retrieval. Encoding is the process of inputting information into the memory system. For instance, when listening to a lecture, watching a play, reading a book, or having a conversation, the brain is actively encoding information. This initial stage involves transforming sensory input into a form that can be processed and stored by the brain. Various factors, such as...
638
MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

489
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
489
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

968
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
968
MOSFET: Depletion Mode01:20

MOSFET: Depletion Mode

481
Depletion-mode MOSFETs represent a unique subset of MOSFET technology, functioning fundamentally differently from their enhancement-mode counterparts. Unlike enhancement MOSFETs, which require a positive gate-source voltage (Vgs) to turn on, depletion-mode MOSFETs are inherently conductive and "normally on" devices.
The primary characteristic of depletion-mode MOSFETs is their ability to conduct current between the drain and source terminals without gate bias. This inherent conductivity...
481

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相关实验视频

Updated: Sep 16, 2025

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx
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基于二维MOO3层的多位电阻随机访问内存

Kai Liu1, Wengui Jiang1, Liang Zhou1

  • 1Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China.

Nanomaterials (Basel, Switzerland)
|July 12, 2025
PubMed
概括
此摘要是机器生成的。

二维层状金属氧化物为神经形态计算提供了先进的电阻随机访问存储器 (RRAM). 石墨烯集成显著改善了RRAM保留时间,使强大的内存计算应用程序成为可能.

关键词:
多层级的储存多层次的储存.电阻随机访问存储器 电阻随机访问存储器电阻切换层的电阻切换层.两个维的金属氧化物.一个α-MoO3纳米板.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 电气工程 电气工程

背景情况:

  • 二维 (2D) 材料为电阻随机存储器 (RRAM) 提供了独特的优势,包括原子尺寸厚度和超平面.
  • 2D层金属氧化物将RRAM的优势与传统金属氧化物的低成本和稳定性相结合.
  • 对于推进神经形态计算和内存计算架构而言,RRAM至关重要.

研究的目的:

  • 使用多步干转移过程制造和描述基于2Dα-MoO3的RRAM设备.
  • 调查电极材料对RRAM性能的影响,特别是保留时间.
  • 为了增强基于二维材料的RRAM的数据保留能力,用于实际应用.

主要方法:

  • 使用2D α-MoO3作为电阻开关层的Pd-MoO3-Ag RRAM设备的制造.
  • 电阻切换测试用于评估操作稳定性,写入电压,切换比率和多位存储.
  • 通过用石墨烯取代Pd电极来改善保留时间,开发了一个Gr-MoO3-Ag异构结构.

主要成果:

  • 该Pd-MoO3-Ag RRAM设备表现出卓越的操作稳定性,低写电压 (~0.5V),高开关率 (>10^6),以及多位存储 (≥3位).
  • 最初的装置表现出约2000秒的有限保留时间.
  • Gr-MoO3-Ag异构的保留时间提高了五倍,超过10^4秒.

结论:

  • 控制2D材料和电阻切换层的类型和厚度是优化RRAM性能的关键.
  • 作为电极材料的石墨烯集成显著提高了基于二维材料的RRAM的数据保留能力.
  • 这些发现为开发具有高开/关比和长期数据保留的RRAM设备铺平了道路,用于先进的计算应用.