Microfluidic devices having an electrowetting configuration and an optimized droplet actuation surface are provided. The devices include a conductive substrate having a dielectric layer, a hydrophobic layer covalently bonded to the dielectric layer, and a first electrode electrically coupled to the dielectric layer and configured to be connected to a voltage source. The microfluidic devices also include a second electrode, optionally included in a cover, configured to be connected to the voltage source. The hydrophobic layer features self-associating molecules covalently bonded to a surface of the dielectric layer in a manner that produces a densely-packed monolayer that resists intercalation and or penetration by polar molecules or species. Also provided are microfluidic devices having an electrowetting configuration that further include a section or module having a dielectrophoresis configuration; systems that include any of the microfluidic devices in combination with an aqueous droplet and a fluidic medium immiscible with the medium of the aqueous droplet; related kits; and methods of manipulating droplets, optionally containing micro-objects such as biological cells, within the microfluidic devices.
提供了具有电润湿结构和优化液滴驱动表面的微流体设备。该装置包括导电基底,该基底具有电介质层、与电介质层共价键合的疏
水层,以及与电介质层电耦合并配置为与电压源连接的第一电极。微流控装置还包括一个第二电极,可选地包括在盖子中,配置为与电压源连接。疏
水层的特点是自结合分子以共价键的方式与介电层表面结合,从而产生一个致密的单层,该单层可抵抗极性分子或物质的插层和渗透。还提供了具有电润湿结构的微流体装置,该装置进一步包括具有介电泳结构的部分或模块;包括与
水液滴和与
水液滴介质不相溶的流体介质相结合的任何微流体装置的系统;
相关试剂盒;以及在微流体装置内操纵液滴(可选含有
生物细胞等微型物体)的方法。