OOIR: Observatory of International Research

Papers

(The TQCC of Applied Spectroscopy is 4. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-08-01 to 2025-08-01.)

Article	Citations
Quantitative Detection of the Raw Ore Turquoise Based on Laser-Induced Breakdown Spectroscopy Technology	188
Temperature and Thermal Diffusivity Diagnostics in Laminar Methane Flames Using Infrared Four-Wave Mixing Techniques	46
In Vivo Near-Infrared Noninvasive Glucose Measurement and Detection in Humans	41
State of Formic Acid Dissolved in Tar According to Infrared Spectroscopy	41
Advertising and Front Matter	34
Monolithic Miniature Glass Spectrometer	33
Advertising and Front Matter	31
Determination of the pK_a Value of Protonated Mono and Polyamine in Solution Using Fourier Transform Infrared Titration	23
Co-Localized Infrared–Raman Spectroscopy: An Innovative Approach for the Quantitative In Situ Analysis of Gas Mixtures at High Pressures	23
Raman Analysis of Orientation and Crystallinity in High T_g, Low Crystallinity Electrospun Fibers	22
Local Adaptive Fusion Regression (LAFR) for Local Linear Multivariate Calibration: Application to Large Datasets	21
Features of Wax Appearance Temperature Determination of Waxy Crude Oil Using Attenuated Total Reflection Fourier Transform Infrared Spectroscopy Under Ambient and High Pressure	20
Mid-Infrared Dispersion Spectroscopy as a Tool for Monitoring Time-Resolved Chemical Reactions on the Examples of Enzyme Kinetics and Mutarotation of Sugars	20
10 kHz Shifted-Excitation Raman Difference Spectroscopy with Charge-Shifting Charge-Coupled Device Read-Out for Effective Mitigation of Dynamic Interfering Backgrounds	19
Expert System for Fourier Transform Infrared Spectra Recognition Based on a Convolutional Neural Network With Multiclass Classification	18
Quantification of Elevated Hydrogen Cyanide (HCN) Concentration Typical in a Residential Fire Environment Using Mid-IR Tunable Diode Laser	18
Symmetric Non-Monochromatic Light as Reference in Fourier Transform Spectrometers	17
Investigation of Thin Silicone Films on Opaque Solid Surfaces Using Coherent Raman Scattering Imaging	16
Corrigendum	16
Recognition of the Presence of Bone Fractures Through Physicochemical Changes in Diagenetic Bone	16
Optical Characterization of Bitumen: Inspecting the Quantum Size Effect in the Nanostructured Phase	15
Comparison of Convolutional and Conventional Artificial Neural Networks for Laser-Induced Breakdown Spectroscopy Quantitative Analysis	15
Bessel Beam Coherent Anti-Stokes Raman Scattering Spectroscopy for Turbulent Flow Diagnosis	15
Raman Spectroscopy Applied to Early Detection of Clostridium Infection in Milk	15
Fourier Transform Infrared Spectroscopy and Vibrational Circular Dichroism Assisted Elucidation of the Solution-State Supramolecular Speciation in Racemic and Enantiopure Ketoprofen	14

Bleach Cleaning of Commercially Available Gold Nanopillar Arrays for Surface-Enhanced Raman Spectroscopy (SERS)	14
Feasibility of In-Line Raman Spectroscopy for Quality Assessment in Food Industry: How Fast Can We Go?	14
Advertising and Front Matter	13
Monitoring Noble Gases (Xe and Kr) and Aerosols (Cs and Rb) in a Molten Salt Reactor Surrogate Off-Gas Stream Using Laser-Induced Breakdown Spectroscopy (LIBS)	13
Widefield Super-Resolution Infrared Spectroscopy and Imaging of Autofluorescent Biological Materials and Photosynthetic Microorganisms Using Fluorescence Detected Photothermal Infrared (FL-PTIR)	13
Novel Raman Spectroscopy Method for Solutions in Uniform, High-Strength Electric Field	13
Wheat Flour Discrimination Using Two-Dimensional Correlation Spectroscopy and Deep Learning	13
Probing the Bovine Hemoglobin Adsorption Process and its Influence on Interfacial Water Structure at the Air–Water Interface	12
Spectroscopic Investigation of Catalyst Inks and Thin Films Toward the Development of Ionomer Quality Control	12
Spectroscopic Studies of BA Class Liquid Crystals in the 6–15 THz Range Using the Fourier Transform Infrared (FT-IR) Method	12
Correlation and Difference Between Raman Spectral Characteristic and Feature Evaluation for Leukocytes and Tumor Cells	12
Advertising and Front Matter	12
Simultaneous Application of Raman and Laser-Induced Breakdown Spectroscopy in the Gas Phase with a Single Laser and Detector	11
Mid-Infrared Generated Laser-Induced Grating Signals in Methane-Containing Gas Mixtures as Indicators of Composition, Pressure, and Temperature	11
Characterization of Animal Protein-Based Binders in Ancient Chinese Wall Paintings Using Atomic Force Microscopy and Fourier Transform Infrared Spectroscopy	11
Integrating Laser-Induced Breakdown Spectroscopy and Ensemble Learning as Minimally Invasive Optical Screening for Diabetes	11
Characterizing Variability in Non-Invasive Hydration Monitoring Using Raman Spectroscopy	10
Infrared Spectroscopy-Determined Bone Compositional Changes Associated with Anti-Resorptive Treatment of the oim/oim Mouse Model of Osteogenesis Imperfecta	10
Enzyme Dynamics in Attoliter-Volume Electrochemical Zero-Mode Waveguides with On-Demand In Situ Hydrogen Peroxide Delivery and Consumption	10
Spectroscopic Study of Micro-/Nano-Hydroxyapatite Polymer Composites Modified with Carbon Nanofibers	10
Characterization and Identification of Diverse Fruit Rot Fungal Species Using Microscopic and Spectroscopic Approaches	10
Neurodevelopmental Process Monitoring of Cytosine Arabinoside-Exposed Neurons Using Raman Spectroscopy	10
Fluorescence Resonance Energy Transfer (FRET) as a Spectroscopic Ruler for the Investigation of Protein Induced Lipid Membrane Curvature: Bacteriorhodopsin and Bacteriorhodopsin Analogs in Model Lipid	9
Advertising and Front Matter	9
Porphyrin Aluminum Metal–Organic Framework in Liquid Water, its Interaction with the Oxidized Organosulfur Compound Diethyl Sulfoxide, and its Sorption from Aqueous Solution	9
Advertising and Front Matter	9
Phosphorus Modulated Peroxidase-Like Activity of Carbon Dots for Colorimetric Detection of Acid Phosphatase	9
Brillouin Spectroscopy of Binary Phospholipid–Cholesterol Bilayers	9
Triplet Network for One-Shot Raman Spectrum Recognition	9
Spatial Resolution of Micro-Raman Spectroscopy for Particulate Lithium Iron Phosphate (LiFePO₄)	8
Laser-Induced Plasmas of Plutonium Dioxide in a Double-Walled Cell	8
Principal Component Analysis and Near-Infrared Spectroscopy as Noninvasive Blood Glucose Assay Methods	8
Deadliest Animals with the Thinnest Wings: Near-Infrared Properties of Tropical Mosquitoes	8
Terahertz Spectroscopy Study of the Stereoisomers of Threonine	8
Fatty Acid Determination in Human Milk Using Attenuated Total Reflection Infrared Spectroscopy and Solvent-Free Lipid Separation	8
Magnetic-Field-Confined Laser Induced Kohl Plasma: Elemental Analysis and Plasma Characterization	8
Congruence Concept for Comparison of Spectra	8
Innovative Substrate-Integrated Hollow Waveguide Coupled Attenuated Total Reflection Sensors for Quantum Cascade Laser Based Infrared Spectroscopy in Harsh Environments	8
Feasibility of a Fiber-Dispersive Raman Spectrometer for Biomarker Detection	8
Detection of Bioactive Metabolites in Escherichia Coli Cultures Using Surface-Enhanced Raman Spectroscopy	7
Temporal Profile of Nonresonant Sum-Frequency Signal from Single-Crystal Silicon Depends on Crystal Orientation	7
Accurate Determination of Trace Cadmium in Soil Samples with Graphite Furnace Atomic Absorption Spectrometry Using Metal–Organic Frameworks as Matrix Modifiers	7
Studies of Protein Binding to Biomimetic Membranes Using a Group of Uniform Materials Based on Organic Salts Derived From 8-Anilino-1-naphthalenesulfonic Acid	7
A Calibration-Free Optical Emission Spectroscopic Method to Determine the Composition of a Spark Discharge Plasma Used for AuAg Binary Nanoparticle Synthesis	7
Coherent Anti-Stokes Raman Scattering Measurements of Time and Length Scales of Temperature Fluctuations in a Turbulent Flame	7
Nitrate Classification Based on Optical Absorbance Data Using Machine Learning Algorithms for a Hydroponics System	7
Two-Dimensional Correlation Spectroscopy (2D-COS) Analysis of Evolving Hyperspectral Images	7
Dependence on the Lens-to-Target Distance and with the Laser Energy at Constant Irradiance of the Laser-Induced Breakdown Spectroscopy Signal	7
Determination of Aminophylline in Human Serum Using Hydrogel Microspheres for Coupled Surface-Enhanced Raman Spectroscopy (SERS) and Solid-Phase Extraction	7
Integrated Optics Waveguides and Mesoporous Oxides for the Monitoring of Volatile Organic Compound Traces in the Mid-Infrared	7

Advertising and Front Matter	7
Monitoring of Oxygen in Simulated Electrolytic Reduction Salt of Pyroprocessing Using Laser-Induced Breakdown Spectroscopy	7
Determination of H₂ Densities Over a Wide Range of Temperatures and Pressures Based on the Spectroscopic Characterization of Raman Vibrational Bands	7
Analysis of Lithium Aging Using Machine Learning-Enhanced Spectroscopy Techniques	7
Tabular Two-Dimensional Correlation Analysis for Multifaceted Characterization Data	7
Coomassie Brilliant Blue G for Smart Colorimetric Determination of the Ionic Surfactants in Triton X-100 Solutions	7
Exploring the Clinical Utility of Raman Spectroscopy for Point-of-Care Cardiovascular Disease Biomarker Detection	7
Dynamic Multivariate Outlier Detection Algorithm Using Ultraviolet Visible Spectroscopy for Monitoring Surface Water Contamination With Hydrological Fluctuation in Real-Time	7
A Spectroscopic Method for Distinguishing Two Novel Sandwich-Type Tungsten Oxide Cluster Compounds	6
Sub-Nanosecond Digital Signal Processing of Photomultiplier Tube Response Enabling Multiphoton Counting in Raman Spectroscopy	6
Landmark Publications in Analytical Atomic Spectrometry: Fundamentals and Instrumentation Development	6
Laser-Induced Fluorescence (LIF) Spectroscopy of Trapped Molecular Ions in the Gas Phase	6
Advertising and Front Matter	6
Acute Leukemia Diagnosis Through AI-Enhanced Attenuated Total Reflection Fourier Transform Infrared Spectroscopy of Peripheral Blood Smears	6
Model Fitting and Analysis of Dielectric Properties in Alcohol–Fuel Blends Using Terahertz and Gigahertz Spectroscopies	6
Crude Oil Density Prediction Improved by Multiblock Analysis of Fourier Transform Ion Cyclotron Resonance Mass Spectrometry, Fourier Transform Infrared, and Near-Infrared Spectroscopy Data	6
Ante- and Post-Mortem Fracture Identification Protocol Based on Low- and High-Level Fusion Using Fourier Transform Infrared Spectroscopy and Raman Spectroscopy Association	6
Raman Spectroscopy as an Effective Tool for Assessment of Structural Quality and Polymorphism of Gallium Oxide (Ga₂O₃) Thin Films	6
First-Order Individual Gas Sensors as Next Generation Reliable Analytical Instruments	6
Ultraviolet Resonance Raman Spectra of Serum Albumins	6
Quasi-Non-Destructive Estimation of Concrete Compression Strength Using Laser-Induced Breakdown Spectroscopy and Multivariate Analysis	6
Disease-Associated Multimolecular Signature in the Urine of Patients with Lyme Disease Detected Using Raman Spectroscopy and Chemometrics	6
Near Real-Time Measurement of Airborne Carbon Nanotubes with Metals Using Raman–Spark Emission Spectroscopy	6
Circular Dichroism Spectral Similarity Plots to Extend Validation and Correction to All Measured Wavelengths	6
Laser Ablation Plasmas and Spectroscopy for Nuclear Applications	6
Non-Destructive Prediction of the Mixed Mineral Pigment Content of Ancient Chinese Wall Paintings Based on Multiple Spectroscopic Techniques	6
Optical Tomography of Polymeric Microsphere Layers Using Confocal Raman Microscopy	6
Two-Dimensional Correlation Spectroscopy (2D-COS) Tracking of the Formation of Selected Transition Metal Compounds Cu(II) and Cd(II) with Cinchonine and Their Impact on Model Components of Erythrocyte	6
Understanding Advanced Attenuated Total Reflection Correction: The Low Absorbance Assumption	6
Photoacoustic Spectroscopy Gas Detection Technology Research Progress	6
Continuous Monitoring of Sulfur Dioxide Removal Using K-Band Molecular Rotational Resonance Spectroscopy	6
Plasma Parameters During Nanoparticle-Enhanced Laser-Induced Breakdown Spectroscopy (NELIBS) in the Presence of Nanoparticle–Protein Conjugates	5
Leveraging Hydrogen Bond-Induced Peak Shifting to Determine Alcohol Concentration in Suspect Gel Hand Sanitizers Using Portable Infrared and Handheld Raman Spectrometers	5
In-Line Chemical Composition Monitoring for the Injection Molding Process of Biodegradable Polymer Blends Using Simultaneous Measurement of Near-Infrared Diffuse Reflectance and Transmission Spectra	5
Deep-Learning-Enabled High-Fidelity Absorbance Spectra from Distorted Dual-Comb Absorption Spectroscopy for Gas Quantification Analysis	5
Reaction Analysis and Process Optimization with Online Infrared Data Based on Kinetic Modeling and Partial Least Squares Quantitation	5
Advertising and Front Matter	5
Time-Dependent Intensity Ratio-Based Approach for Estimating the Temperature of Laser Produced Plasma	5
Self-Optimization of Continuous Flow Electrochemical Synthesis Using Fourier Transform Infrared Spectroscopy and Gas Chromatography	5
Attenuated Total Reflection (ATR) Micro-Fourier Transform Infrared (Micro-FT-IR) Spectroscopy to Enhance Repeatability and Reproducibility of Spectra Derived from Single Specimen Organic-Walled Dinofl	5
Filter Fluorometer Calibration Without the Fluorometer	5
Molecular Emissions from Stretched Excitation Pulse in Nanosecond Phase-Selective Laser-Induced Breakdown Spectroscopy of TiO₂ Nanoaerosols	5
Demixing and Analysis of Complex Biological Raman Hyperspectra Based on Peak Fitting, Amplitude Trend Clustering, and Spectrum Reconstruction	5
Attenuated Total Reflection Infrared and Far-Infrared, and Raman Spectroscopy Studies of Minerals, Rocks, and Biogenic Minerals	5
Effective Medium Model Applied to Biopolymer Solutions	5
Characteristic Spectral Features of Terra Preta (TP) in the 5–15 Terahertz Range	5
Feature Selection and Spectral Indices for Identifying Maize Stress Types	5
Standoff Interaction Assessment Using High-Energy Laser–Induced Oxidation Spectroscopy	5
In Situ Raman Spectroscopy Monitoring of Material Changes During Proton Irradiation	5
Crosstalk-Free Excitation Scheme for Quantitative OH Laser-Induced Fluorescence in Environments Containing Excited CO	5
Theoretical Calculation and Simulation of Peak Distortion of Absorption Spectra of Complex Mixtures	5
Evaluation of Breast Cancer Gene Type 1 (BRCA1) Protein Levels in Cancer Tissue Using Surface-Enhanced Raman Spectroscopy	5
A Sensitive Fluorescence Sensor for Tetracycline Determination Based on Adenine Thymine-Rich Single-Stranded DNA-Templated Copper Nanoclusters	5
Application of Infrared and Near-Infrared Microspectroscopy to Microplastic Human Exposure Measurements	5
Growth Kinetics Monitoring of Gram-Negative Pathogenic Microbes Using Raman Spectroscopy	5
Identification of Relevant Spectral Ranges in Laser-Induced Breakdown Spectroscopy Imaging Using the Fourier Space	5
EXPRESS: Noncontact Fiber Optic Probe for Clinical Applications of Raman Spectroscopy	5
Active Surface-Enhanced Raman Spectroscopy (SERS): A Novel Concept for Enhancing Signal Contrast in Complex Matrices Using External Perturbation	5
Analysis of Laser-Induced Breakdown Spectroscopy Data Acquired from Boundary of Two Matrices	5
Compact Radio Frequency Discharge-Pumped Slab CO Laser System with a Zinc Germanium Phosphide (ZnGeP₂) Sum-Frequency Generator for Remote Sensing of the Atmosphere	5
Impact of Pulsing a Radio Frequency Glow Discharge Lamp on Emission Yields and Analytical Figures of Merit in Glow Discharge Optical Emission Spectroscopy	5
Twice-Modulated Light in Fourier Transform Infrared (FT-IR) Spectrometers from Reflective Samples: Avoiding Distorted Intensity Values	4
Open-Path Atmospheric Transmission of Diode-Pumped Alkali Lasers in Maritime and Desert Environments	4
Application of Laser Spectroscopy and Machine Learning for Diagnostics of Uncontrolled Type 2 Diabetes	4
Raman Spectroscopy for Temporally Resolved Combustion Gas Diagnostics	4
Assessing Mechanochemical Properties of Acrylonitrile Butadiene Styrene (ABS) Items in Cultural Heritage Through a Multimodal Spectroscopic Approach	4
Standoff Deep Ultraviolet Raman Spectrometer for Trace Detection	4
Advertising and Front Matter	4
Application of Raman Spectroscopy to Dynamic Binding Capacity Analysis	4
Characterization and Identification of Natural Amorphous Rocks Using Infrared, Raman, and Low-Frequency Raman Spectroscopy, Including the Application of Boson Peaks	4
Surface-Enhanced Raman Spectroscopy-Based Detection of Micro-RNA Biomarkers for Biomedical Diagnosis Using a Comparative Study of Interpretable Machine Learning Algorithms	4
Advertising and Front Matter	4
New Protocol for Twinning of Raman Devices Toward a Raman Intensity Harmonization	4
Miniaturized and Portable Laser Gas Sensor for Standoff Methane Detection With Non-Cooperative Targets	4
Combining Infrared Refraction and Attenuated Total Reflection Spectroscopy	4
Clinical Spectroscopy: Lost in Translation?	4
Detection of Low Lithium Concentrations Using Laser-Induced Breakdown Spectroscopy (LIBS) in High-Pressure and High-Flow Conditions	4
Two-Dimensional (2D) Hybrid Method: Expanding 2D Correlation Spectroscopy (2D-COS) for Time Series Analysis	4
Sensitive Detection of an Erbium Isotope in an Atomic Beam Using Cavity Ring-Down Spectroscopy	4
Calculation of Spectral Optical Constants Using Combined Ellipsometric and Reflectance Methods for Smooth and Rough Bulk Samples	4

Surface–Bulk Correlation Spectroscopy for the Characterization of Ternary Adsorption	4
Rapid Vector-Based Peak Fitting and Resolution Enhancement for Correlation Analyses of Raman Hyperspectra	4
Theoretical and Practical Considerations of Spatially Offset Raman Spectroscopy (SORS) and Micro-SORS	4
Dispersion Analysis of Perpendicular Modes Using a Hybrid Two-Trace Two-Dimensional (2T2D) Smart Error Sum	4
Differentiating Nylon Samples with Visually Indistinguishable Fluorescence Using Principal Component Analysis and Common Dimension Partial Least Squares Linear Discriminant Analysis with Synchronous F	4
Spectral Data Fusion from Handheld Laser-Induced Breakdown Spectroscopy (LIBS) and X-ray Fluorescence (XRF) Analyzers for Improved Detection of Cerium in a Simulated Dispersal Accident	4
Influence of Different Measuring Backgrounds on the Classification of Multilayer Polyolefin Films Using a Near-Infrared Handheld Spectrometer	4
Isotopic Signatures of Lithium Carbonate and Lithium Hydroxide Monohydrate Measured Using Raman Spectroscopy	4
Molecular Vibrations Are Not Asymmetric	4
Spectroscopic Investigations for the Dating of Paper from the Nineteenth Century	4
Complex-Valued Chemometrics in Spectroscopy: Classical Least Squares Regression	4
Group and Basis Restricted Non-Negative Matrix Factorization and Random Forest for Molecular Histotype Classification and Raman Biomarker Monitoring in Breast Cancer	4
Applying Finite Mixture Models to Quantify Respirable Dust Mass in Coal and Metal–Nonmetal Mines Using Fourier Transform Infrared Spectroscopy	4