显微镜

Abstract(#br)A fast processing route of aspheric polydimethylsiloxane (PDMS) lenses array (APLA) is proposed via the combined effect of inverted gravitational and heat-assisted forces. The fabrication time can be dramatically reduced to ~30\u003cce:hsp sp=\"0.25\"/\u003es, compared favorably to the traditional duration of ~2 hours of repeated cycles of addition-curing processes. In this paper, a low-cost flexible lens can be fabricated by repeatedly depositing, inverting, curing a hanging transparent PDMS elastomer droplet on a previously deposited curved structure.

Abstract(#br)Adhesives produced by marine organisms possess the ability to adsorb robustly and under water to a range of substrates, in a range of environmental conditions and undergo curing under water. In the present work, the bioadhesive produced by germlings of a large brown seaweed, Hormosira banksii , is investigated to assess its adhesive performance. The production of the adhesive secretions was monitored using microscopy and staining experiments, while the attachment strength over substrates of varied chemistry and topography was indirectly evaluated through flow channel experiments.

Alpha-fetoprotein (AFP) is a tumor-associated fetal protein that can be expressed in large amounts in adult tumor cells, serving as a useful clinical tumor-marker. Silicon nanowire (SiNW) biosensors have emerged as a powerful tool in detecting protein biomarkers, due to their ultrahigh sensitivity, real-time response and label-free detection. We fabricated a SiNW-based field-effect transistor (FET) according to \"top-down\" methodology. First, anti-AFP antibodies were immobilized onto the surface of the SiNW-FET.

作者提出了一种基于Ⅱ - Ⅵ化合物组成的纳米线的柔性微谐振器，用于检测外界运动引起的微小应变。将纳米线环谐振器嵌入到聚二甲基硅氧烷( PDMS )柔性体中，以提高耦合效率。本工作将CdS纳米线制备在PDMS柔性衬底上。在纤维尖的帮助下，在显微镜下操纵单根纳米线，使弯折线成环形，使凋落物重叠。这种重叠提高了耦合效率和传感器性能。环形腔直径为1 µ m，长度为75 µ m，半径为α = 10 µ m。实验演示了制作应变传感器的过程，并检测出峰值位移。这种谐振波长在拉伸柔性衬底时出现红移和线性调谐。品质因数约为2000，规整因子约为每拉伸单元80nm。该传感器结构小、灵敏度高，可集成到芯片中。这在一定程度上促进了小型化的发展。因此，本工作有利于光学操纵，进一步推广到可调谐光源。

作者提出了一种基于Ⅱ - Ⅵ化合物组成的纳米线的柔性微谐振器，用于检测外界运动引起的微小应变。将纳米线环谐振器嵌入到聚二甲基硅氧烷( PDMS )柔性体中，以提高耦合效率。本工作将CdS纳米线制备在PDMS柔性衬底上。在纤维尖的帮助下，在显微镜下操纵单根纳米线，使弯折线成环形，使凋落物重叠。这种重叠提高了耦合效率和传感器性能。环形腔有直径1µm、长度75µm、半径10µm的参数。实验演示了制作应变传感器的过程，并检测出峰值位移。这种谐振波长在柔性基底拉伸时出现红移和线性调谐。品质因数约为2000，规整因子约为每拉伸单元80 nm。该传感器结构小、灵敏度高，可集成到芯片中。这在一定程度上促进了小型化的发展。因此，本工作有利于光学操纵，进一步推广到可调谐光源。

本文报道了溶剂蒸发诱导相分离技术制备的多孔聚二甲基硅氧烷( PDMS )结构的制备和表征。产生含有各种浓度的水/四氢呋喃( THF ) / PDMS三元体系，形成稳定的溶液。在分步热处理过程中，通过去除溶剂( THF )和非溶剂(水)相形成多孔PDMS结构。以聚合物溶液中的热力学平衡态为基础构建解析三元相图，解释稳定/不稳定的配方及可能的组分变化路径。结果表明，通过调节水与THF的比值，可以得到孔径在330 ~ 1900 μm可调的孤立孔隙。通过对制备的狗骨样进行拉伸试验，确定了多孔PDMS结构的力学性能。通过调节溶液中溶剂和非溶剂含量，在不影响多孔样品密度的前提下，获得了0.49 ~ 1.05   MPa的弹性模量范围。说明通过降低水与THF的比例，降低PDMS含量，可以提高多孔结构的柔韧性。孔隙率测量揭示PDMS浓度是控制结构孔隙率的主要相，而水/ THF的影响可以忽略不计。