无形碳化植入式封装的电气特性和加速老化
Christopher K Nguyen1, Negar Geramifard1, Yupeng Wu2
1Department of Bioengineering, The University of Texas at Dallas, Richardson, TX, United States of America.
Journal of neural engineering
|December 8, 2025
概括
对于微电极阵列 (MEAs) 的无形碳化 (a-SiC) 薄膜封装,使用电加速衰老 (EAA) 进行了评估. 使用机械失效标准的韦布尔分析产生了用于预测生物电子设备寿命的加速系数.
科学领域:
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
- 电气工程 电气工程
背景情况:
- 微电极阵列 (MEAs) 对于神经接口至关重要,但患有封装不稳定性.
- 无形碳化 (a-SiC) 为MEAs提供了一个稳定,生物相容的薄膜封装解决方案.
研究的目的:
- 评估薄膜a-SiC封装用于使用电加速老化 (EAA) 的MEAs的可靠性.
- 通过对生物电子器件的韦布尔分析来确定EAA加速因子的方法.
主要方法:
- 用a-SiC封装的数字间电极 (IDE) 在37°C的缓冲盐水中进行了测试.
- 电气加速衰老 (EAA) 涉及电压循环和分级电压协议来测量泄漏电流.
- 泄漏电流中的电容到法拉达的过渡作为故障标准.
主要成果:
- 封装的IDE显示了盐水中的显著电变化,故障与缺陷地点的气体演变有关.
- 增量电压偏差确定了特定的故障机制,并允许确定加速因子.
- 分解归因于a-SiC层内的加工诱导的缺陷.
结论:
- 使用机械失效标准的韦布尔分析有效地确定了a-SiC的EAA的加速因子.
- EAA提供了一种可靠的方法来评估薄膜MEA封装,并预测体内设备的寿命.
- 这种方法广泛适用于薄膜生物电子,提高神经植入物的可靠性.
相关概念视频
Electrical Energy
Using electric appliances for a longer period of time consumes more electrical energy and results in a higher electric bill. The energy produced by the transfer of electrons from one point to another is known as electrical energy. If power is delivered at a constant rate, the electrical energy can be defined as the product of power used by the device for a period of time. The energy unit on electric bills is the kilowatt-hour, where one kilowatt-hour is equivalent to 3.6 × 106 joules. The...
Accelerated Curing of Concrete
Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...
Microbial Fuel Cells
Microbial fuel cells (MFCs) are bioelectrochemical devices that generate electricity by exploiting the metabolic processes of electrogenic bacteria. These systems provide a renewable energy source and serve as an innovative method for treating organic waste, such as wastewater.A typical MFC consists of two chambers: an anoxic (oxygen-free) compartment that houses the bacteria and an oxic (oxygen-rich) compartment that contains oxygen as the terminal electron acceptor. Many MFCs use proton...
Microbial Bioremediation of Plastics
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...


