Leveraging coffee‐ring effect on plasmonic paper substrate for sensitive analyte detection using Raman spectroscopy

机译：利用拉曼光谱法对等离子体纸基材进行敏感分析物检测的咖啡环效应

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Abstract >Raman spectroscopy has demonstrated immense promise as a molecular fingerprinting tool in biomedical diagnostics. However, the utility of conventional Raman scattering for ultrasensitive measurements of biofluids is limited by intrinsically weak signals and has spurred advances in and wider applications of plasmon‐enhanced measurements. Here, we propose a label‐free methodology that leverages drop coating deposition on a silver ink‐based plasmonic paper substrate with tunable hydrophobic attributes to combine two distinct sources of enhancement, namely, solute preconcentration and excitation of localized surface plasmons. The facile modulation of the hydrophobicity of the plasmonic silver paper facilitates investigations into the coffee‐ring effect that results from the interplay of contact line pinning, solvent evaporation, and capillary flow. We show that the Raman spectra acquired from the hydrated ring deposits show clear enhancement beyond that obtained from surface‐enhancement owing to the presence of the silver nanofilm. In light of the superior sensitivity and lack of substantive sample preparation requirements, our findings open the door for a complementary low‐cost paper‐based analytical device for molecular sensing. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><abstract xmlns =“http://www.wiley.com/namespaces/wiley”type =“main”xml：lang =“en”> <title type =“main”>抽象</ title> >拉曼光谱已经证明了在生物医学诊断中作为分子指纹识别工具的巨大承诺。然而，传统拉曼散射用于对生物流体的超敏测量的型散射受到本质上弱信号的限制，并对等离子体增强的测量进行了促进和更广泛的应用。在此，我们提出了一种无标记的方法，其利用可调谐疏水性的基于银色墨水纸基材上的脱落沉积，以结合两个不同的增强来源，即溶质前表面等离子体的溶质前浓缩和激发。等离子体银纸的疏水性的容易调查有助于调查与接触线钉扎，溶剂蒸发和毛细血管流动的相互作用导致的咖啡环效果。我们表明，由于银纳米丝的存在，从水合环沉积物中获取的拉曼光谱显示出在表面增强中获得的明显增强。鉴于优越的灵敏度和缺乏实质性样品制备要求，我们的调查结果为分子传感的互补低成本纸张分析装置打开了门。</ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-35645/'>《Journal of Raman Spectroscopy: An International Journal for Original Work in All Aspects of Raman Spectroscopy, Including Higher Order Processes, and Also Brillouin- and Rayleigh Scattering》</a> <b style="margin: 0 2px;">|</b><span>2018年第9期</span><b style="margin: 0 2px;">|</b><span>共7页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Huang Zufang&option=202" target="_blank" rel="nofollow">Huang Zufang;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Nagpal Arun&option=202" target="_blank" rel="nofollow">Nagpal Arun;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Siddhanta Soumik&option=202" target="_blank" rel="nofollow">Siddhanta Soumik;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Barman Ishan&option=202" target="_blank" rel="nofollow">Barman Ishan;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Department of Mechanical EngineeringJohns Hopkins UniversityBaltimore Maryland;</p> <p>Department of Electrical EngineeringUniversity of MichiganAnn Arbor Michigan;</p> <p>Department of Mechanical EngineeringJohns Hopkins UniversityBaltimore Maryland;</p> <p>Department of Mechanical EngineeringJohns Hopkins UniversityBaltimore Maryland;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/4724.html" title="光谱学">光谱学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=coffee ring&option=203" rel="nofollow">coffee ring;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=diffusion limit&option=203" rel="nofollow">diffusion limit;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=drop coating deposition&option=203" rel="nofollow">drop coating deposition;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=silver ink&option=203" rel="nofollow">silver ink;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=surface‐enhanced Raman spectroscopy (SERS)&option=203" rel="nofollow">surface‐enhanced Raman spectroscopy (SERS);</a> </p> <div class="translation"> 机译：咖啡环;扩散极限;滴涂层沉积;银墨水;表面增强拉曼光谱（SERS）; 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