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相关概念视频

LC Circuits01:21

LC Circuits

An LC circuit consists of an inductor and a capacitor, either in series or parallel. Consider a charged capacitor connected with an inductor in series. Before the switch is closed, all the energy of the circuit is stored in the electric field of the capacitor. When the switch is closed, the capacitor begins to discharge, producing a current in the circuit. The current, in turn, creates a magnetic field in the inductor. Because of the induced emf in the inductor, the current cannot change...
Integrator and Differentiator01:13

Integrator and Differentiator

Op-amp circuits have significant applications in various fields, including automotive engineering. One such application is cruise control systems in cars, where op-amp circuits are integral for maintaining a constant speed. In these systems, op-amps function as both integrators and differentiators.
An integrator within an op-amp circuit produces an output directly proportional to the integral of the input signal. This is achieved by replacing the feedback resistor in a typical inverting...
Semiconductors01:22

Semiconductors

There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

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.
Clamper Circuit01:14

Clamper Circuit

A clamper circuit, also known as a DC restorer, represents a specialized variant of the rectifier circuit, notable for its method of taking the output across the diode rather than the capacitor. This configuration lends to several distinctive applications, particularly in handling square wave inputs.
Within this circuit, the diode's orientation prompts the capacitor to charge up to the level of the most negative peak of the input signal. Upon reaching this state, the diode ceases to conduct,...
iChip01:24

iChip

The cultivation of environmental microorganisms has long been hindered by the inability to replicate complex native conditions in vitro. The isolation chip (iChip) addresses this limitation by facilitating the growth of previously uncultivable microorganisms through in situ incubation. Designed for high-throughput microbial cultivation, the iChip comprises hundreds of microchambers, each capable of housing a single microbial cell. These microchambers are loaded with a mixture of molten agar and...

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相关实验视频

Updated: Jun 8, 2026

A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires
07:50

A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires

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高速和大规模的内在可拉伸的集成电路.

Donglai Zhong1, Can Wu1, Yuanwen Jiang1

  • 1Department of Chemical Engineering, Stanford University, Stanford, CA, USA.

Nature
|March 14, 2024
PubMed
概括

研究人员开发了高性能,内在可拉伸的电子产品,模仿皮肤. 这些先进材料实现了高电性能和大规模集成,用于健康监测和人机界面的应用.

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科学领域:

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

背景情况:

  • 本质上可以拉伸的电子产品为先进的应用提供了潜力,例如持续的健康监测和自主医疗治疗.
  • 目前的可伸缩电子产品受到低电性能 (无形水平),小集成尺度和受限制的功能限制.

研究的目的:

  • 开发内在可拉伸晶体管和集成电路,以提高电气性能,高速运行和大规模集成能力.
  • 克服现有的可拉伸电子技术的局限性.

主要方法:

  • 在材料,制造工艺,设备工程和电路设计方面采用了创新.
  • 开发具有高场效移动性和高驱动电流的内在可拉伸晶体管.
  • 制造大型集成电路和高密度触觉传感器阵列.

主要成果:

  • 在100%的应变和100,000个晶体管/cm2的设备密度下,实现了内在可拉伸的晶体管,平均场效应移动性>20cm2/V·s.
  • 展示了大型集成电路 (>1,000个晶体管) 的开关频率>1MHz,超过了以前的可拉伸电子产品.
  • 开发了一种高通量盲人识别系统,使用高密度触觉传感器阵列 (2500单位/厘米2) 和快速刷新的LED显示器.

结论:

  • 开发的内在可拉伸电子产品实现了与硬基板上最先进的柔性电子产品相比的电性能.
  • 设备性能的显著进步大大提高了各种应用的皮肤类电子产品的功能.
  • 该技术为可穿戴传感器,人机接口和先进的医疗保健解决方案提供了新的可能性.