Kabiri Shideh, Sonkusale Sameer
Annu Int Conf IEEE Eng Med Biol Soc. 2015;2015:7530-3. doi: 10.1109/EMBC.2015.7320134.
We propose a novel Complementary Metal Oxide Semiconductor (CMOS) based Lab-on-Chip (LoC) platform for trapping, rotation and detection of cells and microorganism utilizing dielectrophoresis (DEP). DEP is a highly selective function of the permittivity, size and shape of the entity, and also depends on the permittivity of its environment; these dependencies can be used to identify and trap particles of interest with high precision. Real-time monitoring of such cellular manipulation is also desirable. Towards this goal, we have implemented a three-dimensional (3D) octa-pole electrode structure directly using the built-in metal layers of standard complementary metal-oxide-semiconductor (CMOS) process and demonstrate trapping and rotating of yeast cells. Moreover, we implement an impedance readout circuitry to monitor this process in situ. Paper presented both simulation and experimental results validating the platform.
我们提出了一种基于互补金属氧化物半导体(CMOS)的新型片上实验室(LoC)平台,用于利用介电泳(DEP)捕获、旋转和检测细胞及微生物。介电泳是实体介电常数、大小和形状的高度选择性函数,还取决于其环境的介电常数;这些依赖性可用于高精度识别和捕获感兴趣的粒子。对这种细胞操作进行实时监测也是很有必要的。为了实现这一目标,我们直接利用标准互补金属氧化物半导体(CMOS)工艺的内置金属层实现了三维(3D)八极电极结构,并展示了酵母细胞的捕获和旋转。此外,我们还实现了一个阻抗读出电路来原位监测这一过程。论文展示了验证该平台的模拟和实验结果。