OOIR: Observatory of International Research

Papers

(The TQCC of Applied Spectroscopy is 5. 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 2020-05-01 to 2024-05-01.)

Article	Citations
Critical Assessment of Analytical Methods for the Harmonized and Cost-Efficient Analysis of Microplastics	244
Reporting Guidelines to Increase the Reproducibility and Comparability of Research on Microplastics	199
Sampling and Quality Assurance and Quality Control: A Guide for Scientists Investigating the Occurrence of Microplastics Across Matrices	191
Toward the Systematic Identification of Microplastics in the Environment: Evaluation of a New Independent Software Tool (siMPle) for Spectroscopic Analysis	136
Critical Review of Processing and Classification Techniques for Images and Spectra in Microplastic Research	135
Is It or Isn't It: The Importance of Visual Classification in Microplastic Characterization	116
Exploration of Principal Component Analysis: Deriving Principal Component Analysis Visually Using Spectra	114
Isolation and Extraction of Microplastics from Environmental Samples: An Evaluation of Practical Approaches and Recommendations for Further Harmonization	106
Raman Spectroscopy for the Analysis of Microplastics in Aquatic Systems	92
High-Throughput Analyses of Microplastic Samples Using Fourier Transform Infrared and Raman Spectrometry	41
Infrared Spectroscopy of Blood	32
Application of a Hybrid Fusion Classification Process for Identification of Microplastics Based on Fourier Transform Infrared Spectroscopy	31
Detection of Bioactive Metabolites in Escherichia Coli Cultures Using Surface-Enhanced Raman Spectroscopy	28
The Expanding Frontiers of Tip-Enhanced Raman Spectroscopy	26
Towards Raman Automation for Microplastics: Developing Strategies for Particle Adhesion and Filter Subsampling	26
Correlative Microscopy and Spectroscopy Workflow for Microplastics	26
Monitoring the Caustic Dissolution of Aluminum Alloy in a Radiochemical Hot Cell Using Raman Spectroscopy	21
Multivariate Analysis Aided Surface-Enhanced Raman Spectroscopy (MVA-SERS) Multiplex Quantitative Detection of Trace Fentanyl in Illicit Drug Mixtures Using a Handheld Raman Spectrometer	21
Theoretical Simulation of Near-Infrared Spectrum of Piperine: Insight into Band Origins and the Features of Regression Models	21
Comparison of Surface-Enhanced Raman Scattering Properties of Serum and Urine for the Detection of Chronic Kidney Disease in Patients	20
The Identification of Multiple Crystalline Zinc Soap Structures Using Infrared Spectroscopy	20
Application of Raman Spectroscopy for Determination of Syngas Composition	20
Beyond Beer's Law: Spectral Mixing Rules	19
Hydration Shells of DPPC Liposomes from the Point of View of Terahertz Time-Domain Spectroscopy	19
Beyond Beer’s Law: Quasi-Ideal Binary Liquid Mixtures	18

Authentication of Antibiotics Using Portable Near-Infrared Spectroscopy and Multivariate Data Analysis	18
Calibration of the SHERLOC Deep Ultraviolet Fluorescence–Raman Spectrometer on the Perseverance Rover	18
Multiple Constrained Reweighted Penalized Least Squares for Spectral Baseline Correction	17
ISREA: An Efficient Peak-Preserving Baseline Correction Algorithm for Raman Spectra	16
Interband Cascade Laser Arrays for Simultaneous and Selective Analysis of C1–C5 Hydrocarbons in Petrochemical Industry	16
Comparison of 4-Mercaptobenzoic Acid Surface-Enhanced Raman Spectroscopy-Based Methods for pH Determination in Cells	16
Comparison of Raman and Near-Infrared Chemical Mapping for the Analysis of Pharmaceutical Tablets	16
Characterization of Synthetic Hydroxyapatite Fibers Using High-Resolution, Polarized Raman Spectroscopy	16
Chemometrics and Experimental Design for the Quantification of Nitrate Salts in Nitric Acid: Near-Infrared Spectroscopy Absorption Analysis	16
Ultraviolet Absorption Cross-Sections of Ammonia at Elevated Temperatures for Nonintrusive Quantitative Detection in Combustion Environments	15
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)	15
Vibrational Spectroscopy for Detection of Diabetes: A Review	15
Feasibility of In-Line Raman Spectroscopy for Quality Assessment in Food Industry: How Fast Can We Go?	15
A Monolithic Spatial Heterodyne Raman Spectrometer: Initial Tests	14
Feature Selection and Rapid Characterization of Bloodstains on Different Substrates	14
Application of Infrared Reflectance Spectroscopy on Plastics in Cultural Heritage Collections: A Comparative Assessment of Two Portable Mid-Fourier Transform Infrared Reflection Devices	14
Quantification of Lanthanides in a Molten Salt Reactor Surrogate Off-Gas Stream Using Laser-Induced Breakdown Spectroscopy	14
Rapid and Quantitative Detection of Aflatoxin B₁ in Grain by Portable Raman Spectrometer	13
Infrared Optical Constants from Pressed Pellets of Powders: I. Improved n and k Values of (NH₄)₂SO₄ from Single-Angle Reflectance	13
Estimation of the Relative Abundance of Quartz to Clay Minerals Using the Visible–Near-Infrared–Shortwave-Infrared Spectral Region	13
Chemometrics for Raman Spectroscopy Harmonization	13
Prediction of α-Lactalbumin and β-Lactoglobulin Composition of Aqueous Whey Solutions Using Fourier Transform Mid-Infrared Spectroscopy and Near-Infrared Spectroscopy	13
Review of Existing Standards, Guides, and Practices for Raman Spectroscopy	13
Nanoscale Molecular Characterization of Hair Cuticle Cells Using Integrated Atomic Force Microscopy–Infrared Laser Spectroscopy	13
Interactions of Glycerol, Diglycerol, and Water Studied Using Attenuated Total Reflection Infrared Spectroscopy	13
Total Phosphorus Determination in Soils Using Laser-Induced Breakdown Spectroscopy: Evaluating Different Sources of Matrix Effects	12
Intermolecular Interactions in the Polymer Blends Under High-Pressure CO₂ Studied Using Two-Dimensional Correlation Analysis and Two-Dimensional Disrelation Mapping	12
Steps Scientists Can Take to Inform Aquatic Microplastics Management: A Perspective Informed by the California Experience	12
Exploring the Potential of Time-Resolved Photoluminescence Spectroscopy for the Detection of Plastics	12
Polarization Sensitive Photothermal Mid-Infrared Spectroscopic Imaging of Human Bone Marrow Tissue	12
Femtosecond Single-Pulse and Orthogonal Double-Pulse Laser-Induced Breakdown Spectroscopy (LIBS): Femtogram Mass Detection and Chemical Imaging with Micrometer Spatial Resolution	12
Raman Spectroscopy: An Exploratory Study to Identify Post-Radiation Cell Survival	12
A Sensitive Surface-Enhanced Raman Spectroscopy Method for Detecting Tetracycline in Milk	11
Determination of Soil Constituents Using Shifted Excitation Raman Difference Spectroscopy	11
Two-Trace Two-Dimensional Correlation Spectroscopy Study of the Crystallization Behavior of Bioplastics	11
Clinical Spectroscopy: Lost in Translation?	11
Effects of Laser Beam Focusing Characteristics on Laser-Induced Breakdown Spectra	10
Identifying Thermal Decomposition Products of Nitrate Ester Explosives Using Gas Chromatography–Vacuum Ultraviolet Spectroscopy: An Experimental and Computational Study	10
Machine Learning-Assisted Sampling of Surfance-Enhanced Raman Scattering (SERS) Substrates Improve Data Collection Efficiency	10
Detecting Minerals and Organics Relevant to Planetary Exploration Using a Compact Portable Remote Raman System at 122 Meters	10
Probing the Bovine Hemoglobin Adsorption Process and its Influence on Interfacial Water Structure at the Air–Water Interface	10
Raman Spectroscopy Coupled with Reflectance Spectroscopy as a Tool for the Characterization of Key Hydrothermal Alteration Minerals in Epithermal Au–Ag Systems: Utility and Implications for Mineral Ex	9
Analysis of Natural Gas Using a Portable Hollow-Core Photonic Crystal Coupled Raman Spectrometer	9
Characteristic of Five Subpopulation Leukocytes in Single-Cell Levels Based on Partial Principal Component Analysis Coupled with Raman Spectroscopy	9
Lithium Isotope Measurement Using Laser-Induced Breakdown Spectroscopy and Chemometrics	9
Classification of Mosquitoes with Infrared Spectroscopy and Partial Least Squares-Discriminant Analysis	9
Hydration and Ion-Pair Formation of NaNO₃(aq): A Vibrational Spectroscopic and Density Functional Theory Study	9
Fourier Transform Infrared Imaging Analysis of Interactions Between Polypropylene Grafted with Maleic Anhydride and Silica Spheres Using Two-Trace Two-Dimensional Correlation Mapping	9
Apparatus for High-Precision Angle-Resolved Reflection Spectroscopy in the Mid-Infrared Region	9
High-Speed Fluctuations in Surface-Enhanced Raman Scattering Intensities from Various Nanostructures	9

Colon Cancer Grading Using Infrared Spectroscopic Imaging-Based Deep Learning	9
Group and Basis Restricted Non-Negative Matrix Factorization and Random Forest for Molecular Histotype Classification and Raman Biomarker Monitoring in Breast Cancer	9
Self-Optimization of Continuous Flow Electrochemical Synthesis Using Fourier Transform Infrared Spectroscopy and Gas Chromatography	9
Single-Molecule Fluorescence Techniques for Membrane Protein Dynamics Analysis	9
Measuring Nd(III) Solution Concentration in the Presence of Interfering Er(III) and Cu(II) Ions: A Partial Least Squares Analysis of Ultraviolet–Visible Spectra	9
Improved Infrared Optical Constants from Pressed Pellets: II. Ellipsometric n and k Values for Ammonium Sulfate with Variability Analysis	9
Burmese Amber Compared Using Micro-Attenuated Total Reflection Infrared Spectroscopy and Ultraviolet Imaging	8
Augmented Two-Dimensional Correlation Spectroscopy for the Joint Analysis of Correlated Changes in Spectroscopic and Disparate Sources	8
Investigating the Performances of Wide-Field Raman Microscopy with Stochastic Optical Reconstruction Post-Processing	8
Combined Spectroscopic Analysis of Terrestrial Analogs from a Simulated Astronaut Mission Using the Laser-Induced Breakdown Spectroscopy (LIBS) Raman Sensor: Implications for Mars	8
Comparison of Individual and Integrated Inline Raman, Near-Infrared, and Mid-Infrared Spectroscopic Models to Predict the Viscosity of Micellar Liquids	8
Solvent Effect on Assembling and Interactions in Solutions of Phenol: Infrared Spectroscopic and Density Functional Theory Study	8
Tip Recycling for Atomic Force Microscopy-Based Tip-Enhanced Raman Spectroscopy	8
Gold Nanoparticle-Enhanced Laser-Induced Breakdown Spectroscopy and Three-Dimensional Contour Imaging of an Aluminum Alloy	8
Sub-Surface Molecular Analysis and Imaging in Turbid Media Using Time-Gated Raman Spectral Multiplexing	8
Microwave-Assisted Synthesis of Red Emitting Copper Nanoclusters Using Trypsin as a Ligand for Sensing of Pb²⁺ And Hg²⁺ Ions in Water and Tobacco Samples	8
Assessment of Bulk Composition of Heterogeneous Food Matrices Using Raman Spectroscopy	8
Archaeological Mortar Characterization Using Laser-Induced Breakdown Spectroscopy (LIBS) Imaging Microscopy	8
A Simple Sample Preparation Method to Significantly Improve Fourier Transform Infrared (FT-IR) Spectra of Microplastics	8
Fiber Optic Reflection Spectroscopy–Near-Infrared Characterization Study of Dry Pigments for Pictorial Retouching	8
Crystal Structure-Free Method for Dielectric and Polarizability Characterization of Crystalline Materials at Terahertz Frequencies	8
Disease-Associated Multimolecular Signature in the Urine of Patients with Lyme Disease Detected Using Raman Spectroscopy and Chemometrics	7
Inline Raman Spectroscopy and Indirect Hard Modeling for Concentration Monitoring of Dissociated Acid Species	7
On the Limit of Detection in Infrared Spectroscopic Imaging	7
Design Considerations for Discrete Frequency Infrared Microscopy Systems	7
Intensity Enhancement of a Two-Dimensional Asynchronous Spectrum Without Noise Level Fluctuation Escalation Using a One-Dimensional Spectra Sequence Change	7
Simplified Ab Initio Molecular Dynamics-Based Raman Spectral Simulations	7
A Sensitive Fluorescence Sensor for Tetracycline Determination Based on Adenine Thymine-Rich Single-Stranded DNA-Templated Copper Nanoclusters	7
Interlaboratory Application of Raman CO₂ Densimeter Equations: Experimental Procedure and Statistical Analysis Using Bootstrapped Confidence Intervals	7
Analyzing the Water Confined in Hydrogel Using Near-Infrared Spectroscopy	7
Real-Time Measurement of SO₂, H₂S, and CS₂ Mixed Gases Using Ultraviolet Spectroscopy and a Least Squares Algorithm	7
Raman Spectroscopic Detection and Quantification of Macro- and Microhematuria in Human Urine	7
Determination of Stark Shifts and Widths Using Time Resolved Laser-Induced Breakdown Spectroscopy (LIBS) Measurements	7
Wavelength Calibration Uncertainty in Protein Circular Dichroism Data Bank Spectra	7
Tire Classification by Elemental Signatures Using Laser-Induced Breakdown Spectroscopy	7
Deep Learning Models for Data-Driven Laser Induced Breakdown Spectroscopy (LIBS) Analysis of Interstitial Oxygen Impurities in Czochralski-Si Crystals	7
Principal Component Regression for Forensic Age Determination Using the Raman Spectra of Teeth	7
Conversion Mechanisms of Nitroxyl Radical (TEMPO), Oxoammonium Cation, and Hydroxylamine in Aqueous Solutions: Two-Dimensional Correlation Ultraviolet–Visible Spectroscopy	7
Comparison of Convolutional and Conventional Artificial Neural Networks for Laser-Induced Breakdown Spectroscopy Quantitative Analysis	7
Attenuated Total Reflection–Far-Ultraviolet Spectroscopy and Quantum Chemical Calculations of the Electronic Structure of the Top Surface and Bulk of Polyethylenes with Different Crystallinities	6
Probing Heterogeneity in Attenuated Total Reflection Surface-Enhanced Infrared Absorption Spectroscopy (ATR-SEIRAS) Response with Synchrotron Infrared Microspectroscopy	6
Effective Medium Model Applied to Biopolymer Solutions	6
Sample Mass Estimate for the Use of Near-Infrared and Raman Spectroscopy to Monitor Content Uniformity in a Tablet Press Feed Frame of a Drug Product Continuous Manufacturing Process	6
Quantitative Hydrogen Chloride Detection in Combustion Environments Using Tunable Diode Laser Absorption Spectroscopy with Comprehensive Investigation of Hot Water Interference	6
Impact of Imperfect Data on the Performance of Algorithms to Compare Near-Ultraviolet Circular Dichroism Spectra	6
Infrared Refraction Spectroscopy	6
Sample-Specific Prediction Error Measures in Spectroscopy	6
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	6
Classification of Semiconductors Using Photoluminescence Spectroscopy and Machine Learning	6
Thermal Camera-Based Fourier Transform Infrared Thermospectroscopic Imager	6
Two-Step Partial Least Squares-Discriminant Analysis Modeling for Accurate Classification of Edible Sea Salt Products Using Laser-Induced Breakdown Spectroscopy	6
Accurate Determination of Trace Cadmium in Soil Samples with Graphite Furnace Atomic Absorption Spectrometry Using Metal–Organic Frameworks as Matrix Modifiers	6
A Novel Method to Maintain the Sample Position and Pressure in Differentially Pumped Systems Below the Resolution Limit of Optical Microscopy Techniques	6
Probing Protein Secondary Structure Influence on Active Centers with Hetero Two-Dimensional Correlation (Resonance) Raman Spectroscopy: A Demonstration on Cytochrome C	6
Comparison of Spectroscopic Techniques for Determining the Peroxide Value of 19 Classes of Naturally Aged, Plant-Based Edible Oils	6
Up-Conversion Luminescence Processes in NaLaF₄ Doped with Tm³⁺ and Yb³⁺ and Dependence on Tm³⁺ Concentration and Temperature	6
In Vivo Near-Infrared Noninvasive Glucose Measurement and Detection in Humans	6
Two-Dimensional Correlation Spectroscopy: The Power of Power Spectra	6
Innovative Substrate-Integrated Hollow Waveguide Coupled Attenuated Total Reflection Sensors for Quantum Cascade Laser Based Infrared Spectroscopy in Harsh Environments	6
Raman Spectroscopic Study of Phase Coexistence in Binary Phospholipid Bilayers	5
Terahertz Time-Domain Spectroscopy in Reflection Configuration for Inorganic and Mineral Pigment Identification	5
Raman Spectroscopy for Adipose Tissue Assessment in Rat Models of Obesity and Type 1 Diabetes	5
Revealing Lipid Body Formation and its Subcellular Reorganization in Oleaginous Microalgae Using Correlative Optical Microscopy and Infrared Nanospectroscopy	5
Baseline Correction Based on a Search Algorithm from Artificial Intelligence	5
Characterization and Optimization of a Spectral Window for Direct Gaseous Uranium Hexafluoride Enrichment Assay Using Laser-Induced Breakdown Spectroscopy	5
Transmission Infrared Microscopy and Machine Learning Applied to the Forensic Examination of Original Automotive Paint	5
Laser-Induced Breakdown Spectroscopy Combined with Temporal Plasma Analysis of C₂ Molecular Emission for Carbon Analysis in Coal	5
Depth Profiling Investigation of Seawater Using Combined Multi-Optical Spectrometry	5
Mesoporous Zirconia Coating for Sensing Applications Using Attenuated Total Reflection Fourier Transform Infrared (ATR FT-IR) Spectroscopy	5
Mid-Infrared Reflectance Spectroscopy Based on External Cavity Quantum Cascade Lasers for Mineral Characterization	5
Quantitative Raman Cross-Sections and Band Assignments for Fentanyl and Fentanyl Analogs	5
Monitoring Polyurethane Foaming Reactions Using Near-Infrared Hyperspectral Imaging	5
Micro-Electro-Mechanical System Fourier Transform Infrared (MEMS FT-IR) Spectrometer Under Modulated–Pulsed Light Source Excitation	5
Pushing the Limits of Surface-Enhanced Raman Spectroscopy (SERS) with Deep Learning: Identification of Multiple Species with Closely Related Molecular Structures	5
Photoacoustic Spectroscopy and Hyperglycemia in Experimental Type 1 Diabetes	5
Detection and Classification of Bacterial Cells After Centrifugation and Filtration of Liquid Specimens Using Laser-Induced Breakdown Spectroscopy	5
Visualization of Inter- and Intramolecular Interactions in Poly(3-hydroxybutyrate)/Poly(L-lactic acid) (PHB/PLLA) Blends During Isothermal Melt Crystallization Using Attenuated Total Reflec	5
Salivary Raman Spectroscopy: Standardization of Sampling Protocols and Stratification of Healthy and Oral Cancer Subjects	5
Disposable Coverslip for Rapid Throughput Screening of Malaria Using Attenuated Total Reflection Spectroscopy	5
Quantification of Drugs in Brain and Liver Mimetic Tissue Models Using Raman Spectroscopy	5

Optimization of Sample Preparation Using Glass Slides for Spectral Pathology