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首页> 美国卫生研究院文献>Nanoscale Research Letters >A Simple Laser Ablation-Assisted Method for Fabrication of Superhydrophobic SERS Substrate on Teflon Film
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A Simple Laser Ablation-Assisted Method for Fabrication of Superhydrophobic SERS Substrate on Teflon Film

机译：一种在聚四氟乙烯薄膜上制造超疏水SERS衬底的简单激光烧蚀辅助方法

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With high sensitivity at single molecule level, surface-enhanced Raman scattering (SERS) is considered as an ultrasensitive optical detection technology with broad application prospects in lots of fields. However, the complicated fabrication and unaffordable price of SERS substrate are still a roadblock on the way to be widely used in industry. In this work, the SERS spectra on a commercial laser engraved Teflon (PTFE) film with engraved microarray are investigated. The wettability of film surface modulated by laser engraving make the microarray have the ability to decrease the contact area on film surface while water evaporation. The SEM image of the engraved area points out the microanostructures generated engraving process is crucial to its superhydrophobic property. The probing molecules (i.e., methylene blue and rhodamine6G) were utilized to investigate with the limit of detection (1 × 10−14 M). Furthermore, the biomolecule (bovine serum albumin) was used to demonstrate its benefits in biological applications. The measured intensities of Raman spectra on this PTFE with laser engraved microarray demonstrate its potential value for a SERS substrate. Our work on this simple, cheap SERS substrate with high sensitivity has a great commercial value and plenty of application in lots of fields.Electronic supplementary materialThe online version of this article (10.1186/s11671-018-2658-3) contains supplementary material, which is available to authorized users.
机译：表面增强拉曼散射（SERS）具有单分子水平的高灵敏度，被认为是一种超灵敏的光学检测技术，在许多领域都有广阔的应用前景。然而，SERS基板的复杂制造和难以承受的价格仍然是在工业上广泛使用的障碍。在这项工作中，研究了带有雕刻微阵列的商用激光雕刻特氟隆（PTFE）膜上的SERS光谱。通过激光雕刻调节的薄膜表面的润湿性使微阵列具有减少水蒸发时薄膜表面接触面积的能力。雕刻区域的SEM图像指出，雕刻过程中产生的微观/纳米结构对其超疏水性能至关重要。利用探测分子（即亚甲基蓝和若丹明6G）进行检测，检测限为（1×10 -14 M）。此外，生物分子（牛血清白蛋白）被用于证明其在生物学应用中的益处。用激光雕刻微阵列在该PTFE上测得的拉曼光谱强度证明了其对SERS衬底的潜在价值。我们在这种简单，廉价，高灵敏度的SERS基板上的工作具有巨大的商业价值，并在许多领域中得到了广泛的应用。电子补充材料本文的在线版本（10.1186 / s11671-018-2658-3）包含补充材料，其中适用于授权用户。

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