亚500 Da生物分子的电磁操控
Electromagnetic manipulation of sub-500 Da biomolecules
AI总结：
该研究提出融合DEP与等离子体光镊的器件，实现对金属纳米颗粒及数百Da级生物分子的高效捕获、SERS表征与单分子生物传感。
摘要：
纳米尺度物质的操控有可能彻底变革纳米科学与技术中的众多领域。本文通过实验演示并数值表征了一种器件，该器件结合了介电泳（DEP）的优势——长程且强大的捕获力——与等离子体光镊的优势——高灵敏度，从而在金属纳米颗粒和生物分子的捕获与传感方面实现了显著效率。具体而言，我们展示了牛血清白蛋白和罗丹明B的DEP捕获及表面增强拉曼散射表征，由此将光镊器件的应用扩展至质量仅为数百Da的分子。这一范围几乎涵盖了与生命相关的任何分子，从微小的寡肽到大型蛋白质。这将我们的操控能力深入推进至高效单分子生物传感和量子科学领域，为在纳米尺度探测物质提供了强大平台。
英文摘要：
The manipulation of nanoscale matter has the potential to revolutionize a variety of fields across nanoscience and technology. Here, we demonstrate experimentally and characterize numerically a device that combines the benefits of dielectrophoresis (DEP) - long-range and strong trapping forces - with those of plasmonic tweezers - high sensitivities - to achieve a remarkable efficiency in the trapping and sensing of metallic nanoparticles and biomolecules. In particular, we show the DEP trapping and surface enhanced Raman scattering characterization of bovine serum albumin and Rhodamine B, thus extending the applications of tweezing devices to molecules having masses of only a few hundreds of Da. This range covers virtually any molecule relevant for life, from tiny oligopeptides to large proteins. This pushes our manipulation capabilities deep into the realms of efficient single-molecule biosensing and quantum science, providing a powerful platform to probe matter at the nanoscale.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
