A thin film made of a stiff polymer and having indentations on its surface, and methods of making and using the thin film are disclosed. The surface includes a plurality of indentations, the shape of each indentation corresponding to an outer surface of an imprint moiety, such as an animal, bacterial, or plant cell. The thin film can be mounted on a detector, which can be used to selectively bind to and detect the imprint moiety in a sample, e.g., a biological or environmental sample, at a minimum concentration of as low as 500 to 1000 imprint moieties per milliliter of sample.
本发明公开了一种由硬质聚合物制成、表面有凹痕的薄膜,以及制造和使用该薄膜的方法。薄膜表面包括多个压痕,每个压痕的形状与印记分子(如动物、细菌或植物细胞)的外表面相对应。薄膜可安装在检测器上,检测器可用于选择性地结合和检测样品(如
生物或环境样品)中的印记分子,最低浓度可低至每毫升样品中有 500 到 1000 个印记分子。