Differentiating intrinsic SERS spectra from a mixture by sampling induced composition gradient and independent component analysis.
نویسندگان
چکیده
By generating a composition gradient on a highly uniform SERS substrate and applying independent component analysis, we demonstrate that one can extract the intrinsic SERS spectrum of individual components from SERS spectra obtained from a two-component mixture.
منابع مشابه
Surface enhanced Raman spectroscopy (SERS) for the discrimination of Arthrobacter strains based on variations in cell surface composition.
Surface enhanced Raman spectroscopy (SERS) is a rapid and highly sensitive spectroscopic technique that has the potential to measure chemical changes in bacterial cell surface in response to environmental changes. The objective of this study was to determine whether SERS had sufficient resolution to differentiate closely related bacteria within a genus grown on solid and liquid medium, and a si...
متن کاملCombination of surface enhanced Raman and hyper-Raman imaging using hyperspectral analysis
Combination of surface enhanced Raman scattering (SERS) with its two-photon analogue, surface enhanced hyper-Raman scattering (SEHRS), provides complementary structural and chemical information due to the different corresponding selection rules. Depending on the molecular symmetry, SEHRS may probe IR active modes or additional “silent” modes, which are seen neither in Raman nor in IR spectra [1...
متن کاملEvaluating Dye Concentration in Bicomponent Solution by PCA-MPR and PCA-ANN Techniques
This paper studies the application of principal component analysis, multiple polynomial regression, and artificial neural network ANN techniques to the quantitative analysis of binary mixture of dye solution. The binary mixtures of three textile dyes including blue, red and yellow colors were analyzed by PCA-Multiple polynomial Regression and PCA-Artificial Neural network PCA-ANN methods. The o...
متن کاملBayesian Learning via Stochastic Gradient Langevin Dynamics
In this paper we propose a new framework for learning from large scale datasets based on iterative learning from small mini-batches. By adding the right amount of noise to a standard stochastic gradient optimization algorithm we show that the iterates will converge to samples from the true posterior distribution as we anneal the stepsize. This seamless transition between optimization and Bayesi...
متن کاملSorting of Single Biomolecules based on Fourier Polar Representation of Surface Enhanced Raman Spectra
Surface enhanced Raman scattering (SERS) spectroscopy becomes increasingly used in biosensors for its capacity to detect and identify single molecules. In practice, a large number of SERS spectra are acquired and reliable ranking methods are thus essential for analysing all these data. Supervised classification strategies, which are the most effective methods, are usually applied but they requi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- The Analyst
دوره 137 1 شماره
صفحات -
تاریخ انتشار 2012