CAJ | 학술논문

表面增强拉曼光谱（surface‐enhanced Raman spectroscopy ，SERS）技术是一种基于探测吸附于金属基底表面分子振动光谱的快速无损检测方法，目前广泛应用于表面吸附、电化学催化、传感器、生物医学检测和痕量的检测与分析等领域。本实验采用直流磁控溅射技术在BK7玻璃基底上沉积一层厚度为50 nm的金属铜薄膜，在Ar离子轰击作用下获得不同表面粗糙度的金属铜薄膜样品，从而制备具有不同表面增强拉曼光谱活性的金属基底。实验样品分别通过X射线衍射仪（XRD）、原子力显微镜（AFM ）、分光光度计、拉曼光谱仪表征其结构、表面形貌及光学性质。测试结果表明铜膜在Ar离子束轰击前后，样品X射线衍射谱的峰值强度没有发生变化，说明其晶相结构未发生改变；随着离子束能量的增加，薄膜表面粗糙度改变，光学散射强度随着表面粗糙度的增加而增强；离子束薄膜表面改性后，以罗丹明B（Rh B）为探针分子，表征薄膜样品表面增强拉曼的活性，通过对比不同样品表面Rh B的拉曼光谱，发现其光谱强度随金属铜薄膜样品表面粗糙度的增加而增强。
표면증강랍만광보（surface‐enhanced Raman spectroscopy ，SERS）기술시일충기우탐측흡부우금속기저표면분자진동광보적쾌속무손검측방법，목전엄범응용우표면흡부、전화학최화、전감기、생물의학검측화흔량적검측여분석등영역。본실험채용직류자공천사기술재BK7파리기저상침적일층후도위50 nm적금속동박막，재Ar리자굉격작용하획득불동표면조조도적금속동박막양품，종이제비구유불동표면증강랍만광보활성적금속기저。실험양품분별통과X사선연사의（XRD）、원자력현미경（AFM ）、분광광도계、랍만광보의표정기결구、표면형모급광학성질。측시결과표명동막재Ar리자속굉격전후，양품X사선연사보적봉치강도몰유발생변화，설명기정상결구미발생개변；수착리자속능량적증가，박막표면조조도개변，광학산사강도수착표면조조도적증가이증강；리자속박막표면개성후，이라단명B（Rh B）위탐침분자，표정박막양품표면증강랍만적활성，통과대비불동양품표면Rh B적랍만광보，발현기광보강도수금속동박막양품표면조조도적증가이증강。
Surface‐enhanced Raman Spectroscopy (SERS) was a rapid non‐destructive testing .It was based on detecting molecule vibrational spectrum which was adsorbed on the metallic surface .Now it was widely used in surface adsorption ,electrochemical catalysis ,sensors ,bio‐medical testing ,trace amount analysis and other fields .In our experiment ,copper metallic films were de‐posited 50nm on BK7 glass substrates by direct current magnetron sputtering .And then the films were employed for the Ar ion beam etching modification .The structure ,morphology and optical properties was characterized by X‐ray diffraction (XRD) , Atomic Force Microscope (AFM ) ,spectrophotometer and Raman spectroscopy .In the XRD graph ,the peak value of modify copper film were the same with the untreated film .So the structure of copper film was not change .With increasing the power of Ar ion ,the surface roughness was changed ,and scattered spectrum intensity was increased by surface roughness added .With Rhodamine B(Rh B) as a probe molecule ,Raman scattered spectrum was detected on modify copper film .Compared with the dif‐ferent samples ,we can find the Raman signal was enhanced by surface roughness added .It will have some value on study the principles of SERS .