Microfluidic devices for small-angle neutron scattering.
Microfluidic devices for small-angle neutron scattering.
复制标题
DOI：
10.1107/s1600576718007264
复制
发表时间：
2018-06-01
影响因子：
6.1
通讯作者：
Cabral JT
中科院分区：
文献类型：
--
作者：
Lopez CG;Watanabe T;Adamo M;Martel A;Porcar L;Cabral JT
材料和制造方法的审查提供了小角度中子散射的微器件的建议。本文对用于中子小角散射（SANS）的微流控器件的材料和方法进行了比较研究。代表性的无机玻璃，金属和聚合物材料和设备进行了评估下典型的SANS配置。性能标准包括中子吸收、散射背景和活化，以及空间分辨率、化学相容性和耐压性，以及成本、耐用性和可制造性。在无硼玻璃（或石英）板之间的封闭面聚合物光刻法成为快速原型化微流体SANS设备的一种有吸引力的方法，其透射率高达98%，背景类似于标准液体单元（I = 10−3 cm−1）。 对于需要更高耐久性和/或耐化学性、耐热性和耐压性的应用，烧结或蚀刻的无硼玻璃和硅器件以各种制造要求为代价提供了上级性能，并且越来越多地在商业上可获得。
A review of materials and fabrication methods provides recommendations for microdevices for small-angle neutron scattering. A comparative examination is presented of materials and approaches for the fabrication of microfluidic devices for small-angle neutron scattering (SANS). Representative inorganic glasses, metals, and polymer materials and devices are evaluated under typical SANS configurations. Performance criteria include neutron absorption, scattering background and activation, as well as spatial resolution, chemical compatibility and pressure resistance, and also cost, durability and manufacturability. Closed-face polymer photolithography between boron-free glass (or quartz) plates emerges as an attractive approach for rapidly prototyped microfluidic SANS devices, with transmissions up to ∼98% and background similar to a standard liquid cell (I ≃ 10−3 cm−1). For applications requiring higher durability and/or chemical, thermal and pressure resistance, sintered or etched boron-free glass and silicon devices offer superior performance, at the expense of various fabrication requirements, and are increasingly available commercially.