私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關(guān)鏈接
聯(lián)系方式
  • 通信地址:陜西省西安市長(zhǎng)安南路199號(hào) 陜西師范大學(xué) 化學(xué)化工學(xué)院 079信箱
  • 郵編:710062
  • 電話:029-81530828
  • 傳真:
  • Email:yangpeng@snnu.edu.cn
當(dāng)前位置:> 首頁(yè) > 論文著作 > 正文
[Sensors and Actuators B: Chemical] Synthesis of Superhydrophobic Polydopamine-Ag Microbowl/Nanoparticle Array Substrates for Highly Sensitive, Durable and Reproducible Surface-Enhanced Raman Scattering Detection
作者:Bin Shang, Yanbing Wang, Peng Yang*, Bo Peng*, Ziwei Deng*
關(guān)鍵字:PolydopamineAg nanoparticlesSurface-enhanced Raman scatteringSuperhydrophobicityHierarchical surface
論文來(lái)源:期刊
具體來(lái)源:Sensors and Actuators B: Chemical
發(fā)表時(shí)間:2017年
Surface-enhanced Raman scattering (SERS) sensor allows for fingerprinting and label-free molecular detection with a high sensitivity, but the simple fabrication of SERS active substrates with a well-control over the SERS performance, e.g. an ultra-high sensitivity, superior reproducibility and long-term stability remains a great challenge. Here, we introduce an easy strategy for synthesizing polydopamine-Ag microbowl/nanoparticle array (PDA-Ag MNA) substrates with a tunable superhydrophobic surface, applicable for ultra-highly sensitive SERS detection. First, the periodically dented PDA films are prepared by polymerizing dopamine onto 2D polystyrene colloidal crystals formed at the liquid/air interface, and followed with an in-situ reduction of Ag ions to Ag nanoparticles after removing polystyrene. The surface morphology, i.e. microbowl/nanoparticle structure, is well-controlled, therefore, allowing that the SERS activity of the substrate is under control. Inspired by the superhydrophobic hierarchical surface of the rose petals, this analogous MNA surface is subsequently endowed to be superhydrophobic. This way, the SERS detection of ultra-dilute solute (10?14 M) can be achieved by concentrating analytes within a localized region. Moreover, this substrate also shows a superior reproducibility in result and durability in use. This strategy exhibits a realistic paradigm for further improving the sensitivity of the SERS technique.
主站蜘蛛池模板: 宝兴县| 万全县| 盐源县| 济南市| 西畴县| 渭源县| 怀远县| 柳州市| 安泽县| 梨树县| 明光市| 漳州市| 荥阳市| 咸宁市| 许昌县| 博兴县| 淮北市| 香河县| 平定县| 都安| 晋州市| 阿克陶县| 永登县| 双流县| 衡阳市| 富锦市| 囊谦县| 化州市| 临安市| 屏东市| 广安市| 金门县| 开阳县| 砀山县| 大方县| 大宁县| 房山区| 资源县| 富蕴县| 夏邑县| 邯郸市|