পদ্ধতির তুলনা করুন

	বৃত্তীয় দ্বৈতবর্ণতা	এফটি-আইসিআর ভর স্পেকট্রোমেট্রি	Surface Plasmon Resonance
ক্ষেত্র	বর্ণালীবীক্ষণ	বর্ণালীবীক্ষণ	বর্ণালীবীক্ষণ
পরিবার	Process / pipeline	Process / pipeline	Process / pipeline
উদ্ভবের বছর	1969	1974	1971
প্রবর্তক	Jean-Claude Fasman	Alan Marshall	Erich Kretschmann
ধরন	Spectroscopic method	Mass spectrometry technique	Optical technique
মৌলিক উৎস	Greenfield, N. J., & Fasman, G. D. (1969). Computed circular dichroism spectra for protein secondary structures. Biochemistry, 8(10), 4108-4116.	Comisarow, M. B., & Marshall, A. G. (1974). Fourier transform ion cyclotron resonance spectroscopy. Chemical Physics Letters, 25(2), 282-283.	Kretschmann, E. (1971). Determination of optical constants of metals by excitation of surface plasmons. Zeitschrift für Physik, 241(4), 313-324.
অপর নাম	CD spectroscopy, circular dichroism, CD analysis	FT-ICR-MS, Fourier Transform ICR, ICR mass spectrometry	SPR, surface plasmon, SPR biosensing
সম্পর্কিত	3	4	3
সারসংক্ষেপ	Circular Dichroism (CD) spectroscopy measures the differential absorption of left- and right-circularly polarized light by optically active molecules, particularly proteins and nucleic acids. Introduced by Greenfield and Fasman in 1969, CD is a rapid, non-destructive technique for characterizing secondary structure (alpha-helix, beta-sheet), monitoring protein folding transitions, and assessing conformational changes in response to pH, temperature, or ligand binding.	Fourier Transform Ion Cyclotron Resonance (FT-ICR) mass spectrometry is an advanced analytical technique that combines magnetic confinement of ions with Fourier transform data processing to achieve exceptional mass accuracy and resolution. Developed by Comisarow and Marshall in 1974, FT-ICR-MS enables the determination of exact masses and elemental compositions of complex molecules, making it invaluable for environmental chemistry, metabolomics, petroleum characterization, and structural elucidation of unknowns.	Surface Plasmon Resonance (SPR) is a real-time, label-free technique for detecting and monitoring biomolecular interactions at a sensor surface by measuring changes in the refractive index caused by ligand binding. Developed by Kretschmann in 1971 and applied to biosensing by Liedberg, Nylander, and Lundström in 1983, SPR is now a gold standard for measuring binding kinetics (association and dissociation rates) and equilibrium binding constants in protein interactions, antibody-antigen recognition, and drug discovery.