APPLIED SPECTROSCOPY 是世界领先的光谱学期刊之一，发表高质量的同行评议文章，包括基础和应用，涵盖光谱学的各个方面。该杂志成立于 1951 年，由应用光谱学学会拥有并出版该杂志致力于履行协会的使命，即“……推进和传播有关光谱学和其他相关科学的艺术和科学的知识和信息。”

Applied Spectroscopy is one of the world's leading journals in spectroscopy, publishing high-quality peer-reviewed articles that cover both fundamental and applied aspects of spectroscopy. Established in 1951, the journal is owned and published by the Society for Applied Spectroscopy, dedicated to advancing and disseminating knowledge and information related to the art and science of spectroscopy and other related sciences.

《Applied Spectroscopy》是全球领先的光谱学期刊之一，发表高质量的同行评审文章，涵盖光谱学的基础和应用各个方面。该杂志成立于1951年，由应用光谱学学会拥有并出版，致力于推进和传播光谱学及其他相关科学的知识与信息。

Applied Spectroscopy

To better understand the effect of mechanical stress during the spinning of silk, the protein orientation and conformation of Bombyx mori regenerated silk fibroin (RSF) films have been studied as a function of deformation in a static mode or in real time by tensile-Raman experiments and polarization modulation infrared linear dichroism (PM-IRLD), respectively. The data show that either for step-by-step or continuous stretching, elongation induces the progressive formation of β-sheets that align along the drawing axis, in particular above a draw ratio of 2. The formation of β-sheets begins before their alignment during a continuous drawing. Unordered chains were, however, never found to be oriented, which explains the very low level of orientation of the amorphous phase of the natural fiber. Stress-perturbed unordered chains readily convert into β-sheets, the strain-induced transformation following a two-state process. The final level of orientation and β-sheet content are lower than those found in the native fiber, indicating that various parameters have to be optimized in order to implement a spinning process as efficient as the natural one. Finally, during the stress relaxation period in a step-by-step drawing, there is essentially no change of the content and orientation of the β-sheets, suggesting that only unordered structures tend to reorganize.

Alexandrine Huot

Thierry Lefèvre

Jean-François Rioux-Dubé

François Paquet-Mercier

Anne-Philipe Nault

Michèle Auger

Michel Pézolet

Effect of Mechanical Deformation on the Structure of Regenerated <i>Bombyx mori</i> Silk Fibroin Films as Revealed Using Raman and Infrared Spectroscopy

机械变形对再生<i>家蚕</i>丝素蛋白薄膜结构的影响：拉曼和红外光谱揭示

A dual-wavelength excitation Raman probe with laser inputs at 866 nm or 1064 nm is customized and integrated into a compact Raman spectrometer that is based on an InGaAs detector. Under 1064 nm illumination, the spectrometer detects fingerprint Raman signals below 2000 cm –1 . While under 866 nm illumination, the spectral range is extended to cover high-frequency region (2400–4000 cm –1 ) that includes major C–H and O–H Raman vibrations. We demonstrate that the dual excitation InGaAs Raman is beneficial in detecting high-frequency Raman signals, especially water contents in high-fluorescent biological samples such as human dental tissues, grape skin, and plum skin due to the suppressed fluorescence interference.

Wencai He

Bolan Li

Shan Yang

High-Frequency Raman Analysis in Biological Tissues Using Dual-Wavelength Excitation Raman Spectroscopy

双波长激发拉曼光谱技术在生物组织高频拉曼分析中的应用

Oyster fossils are some of the most common bivalve mollusk fossils found all over the world, they are different from other fossils because the oyster is still alive in the present day, and the body structure of modern oyster is almost the same as that of ancient one. Therefore, we designed a control experiment comparing the Raman spectra of minerals from both modern oysters and fossil oysters to explore the mechanism of oyster's fossilization process, which is considered to be helpful for investigating biological evolution or paleoenvironment. The oyster fossil sample was found in Nagi-Cho, Okayama Prefecture, Japan. We focused on the variations of band position and full width half-maximum of ν 1 Raman band (symmetric stretching mode) of calcite (CaCO 3 ) from modern and fossil oysters and the mineral conversion between calcite and aragonite (CaCO 3 ) around the adductor muscle inside the oyster. Compared to modern oysters, the ν1 band at around 1086 cm −1 of calcite from oyster fossils shifted to a high wavenumber region, and the possible reason for this phenomenon is considered an elemental substitution between Ca 2+ and Mg 2+ . As for aragonite around adductor muscle in fossil oysters, it has been found by Raman spectra that most of the aragonite has been converted into calcite because calcite has a relatively more stable structure.

Yaxuan Han

Yukihiro Ozaki

Motohiro Tsuboi

Non-destructive Analytical Study of Raman Spectra Variations and Mechanisms of Calcite and Aragonite in Modern and Fossilized Oysters

现代和化石牡蛎中方解石和文石的拉曼光谱变化及其机制的无损分析研究

Pulsed terahertz attenuated total reflection (ATR) spectra of solid materials and liquids covering the 10 cm(-1) to 120 cm(-1) (0.3 THz to 3.6 THz) region of the electromagnetic spectrum are recorded using a terahertz pulsed spectrometer and silicon ATR modules. Pulsed terahertz ATR measurements are completed nondestructively using small amounts of sample (typically 1 mg for solids) and no sample preparation. Many terahertz analyses can be run in rapid sequence, minimizing the analysis time.

David A. Newnham

Philip F. Taday

Pulsed Terahertz Attenuated Total Reflection Spectroscopy

脉冲太赫兹衰减全反射光谱学

Volatile organic compounds (VOCs) are an ever-growing hazard for health and environment due to their increased emissions and accumulation in the air. Quantum cascade laser-based infrared (QCL-IR) sensors hold significant promise for gas monitoring, thanks to their compact, rugged design, high laser intensity, and high molecule-specific detection capabilities within the mid-infrared spectrum's fingerprint region. In this work, tunable external cavity QCLs were complemented by an innovative germanium-on-silicon integrated optics waveguide sensing platform with integrated microlenses for efficient backside optical interfacing for the tunable laser spectrometer. The waveguide chip was coated with a mesoporous silica coating, thereby increasing the signal by adsorptive enhancement of VOCs while at the same time limiting water vapor interferences. Different least square fitting methods were explored to deconvolute the resulting spectra, showing subparts-per-million by volume (sub-ppmv) limits of detection and enrichment factors of up to 22 000 while keeping the footprint of the setup small (29 × 23 × 11 cm³). Finally, a use-case simulation for the continuous detection of VOCs in a process analytical technology environment confirmed the high potential of the technique for the monitoring of contaminants. By successfully demonstrating the use of photonic waveguides for the monitoring of VOCs, this work offers a promising avenue for the further development of fully integrated sensors on a chip.

Felix Frank

Bettina Baumgartner

Mattias Verstuyft

Nuria Teigell Beneitez

Jeroen Missinne

Dries Van Thourhout

Gunther Roelkens

Bernhard Lendl

Integrated Optics Waveguides and Mesoporous Oxides for the Monitoring of Volatile Organic Compound Traces in the Mid-Infrared

集成光学波导与介孔氧化物用于中红外挥发性有机化合物痕量监测

Environmental fluorescence measurements sometimes use water Raman scattering as an internal standard to compensate for path length, lensing effects, and turbidity. Fluorescent dissolved organic matter (FDOM) in water may interfere strongly with the measurement of this reference. However, fluorescence in fluid solution is largely unpolarized, while the OH stretching Raman band of water is always strongly polarized. Using an environmental sample from Lake Wateree in South Carolina, USA, we demonstrate that judicious use of this polarization allows for a significant level of improvement in the contrast or visibility of the water Raman band relative to FDOM.

Callum E. Twining

Paige K. Williams

Whitney E. Schuler

Caitlyn M. English

Tammi L. Richardson

Michael L. Myrick

Using Polarization to Increase Contrast of Water OH Raman Scattering Relative to Fluorescence of Dissolved Organic Matter

利用偏振增加水OH拉曼散射相对于溶解有机物荧光对比度

Leptospirosis is an acute bacterial febrile disease affecting humans and animals in many tropical and subtropical countries. This work presents an optimization of surface-enhanced Raman spectroscopy (SERS) substrates to probe vibrational spectroscopic detail from Leptospira deoxyribonucleic acid (DNA). The pathogenic gene of LipL32 was used as a biomarker. The SERS substrates were based on a photonic crystal (PC) structure embedded with bi-metallic gold and silver nanoparticles (PC@AuAg NPs). The localized plasmonic resonance of AuAg NPs was coupled to the Raman modes of the target through SERS interaction. Prior to detection, the AuAg NPs were functionalized with chemical linkers to facilitate specific conjugation between metallic surfaces and DNA biomolecules. The immobilization and hybridization of probe DNA to their complementary target DNA (cDNA) created duplex formation for detection. The configuration was also tested with non-complementary DNA to verify detection specificity. Prominent SERS peaks were recorded, and the characteristic intensity decreased after cDNA hybridization due to less base interaction after complementary pairing. Distinct SERS behavior from the negative control test was also observed in non-complementary interaction. The configuration is highly attractive and can be potentially extended for sensitive and label-free detection of leptospiral DNA, paving the way for alternative diagnosis of leptospirosis.

Anis Athirah Abdul Razak

Liyana Shatar

Aima Ramli

Syara Kassim

Mohd Sabri Mohd Ghazali

Hui Yee Chee

Rozalina Zakaria

Mohd Adzir Mahdi

Fariza Hanim Suhailin

Surface-Enhanced Raman Spectroscopy (SERS) Substrates Based on Photonic Crystal Embedded Bi-Metallic Nanoparticles for Leptospiral DNA Detection

基于光子晶体嵌入双金属纳米颗粒的表面增强拉曼光谱(SERS)基底用于钩端螺旋体DNA检测

Combining near-infrared (NIR) and mid-infrared (MIR) spectroscopy to cover both the fundamental and overtone combination molecular vibrational resonances allows more robust analytical methods to be used, such as two-dimensional correlation spectroscopy. However, due to the strong differences in molar absorption coefficients and transparency of the optical material, it is inherently difficult to perform NIR and MIR spectroscopy on aqueous samples using a single instrument. Combining spectra from different instruments and sample presentations can result in unwanted spectral variations, which can influence the prediction models and mitigate the advantages of the combination approaches. In this work, a more consistent instrument response is achieved by combining a single supercontinuum (SC) laser spanning from 1000 to 4000 nm as the light source, with an attenuated total reflection crystal and a transmission cuvette in a single-path configuration. Using this approach, NIR–MIR correlation spectroscopy is demonstrated using a set of 22 aqueous samples with varying concentrations of ethanol, sucrose, and ʟ-proline.

Doyinsola S. Sonoiki

Kyei Kwarkye

Klavs M. Sørensen

Søren B. Engelsen

Ole Bang

Christian R. Petersen

Single-Path Supercontinuum Near- to Mid-Infrared Correlation Spectroscopy of Aqueous Samples

单路径超连续近红外至中红外相关光谱法分析水溶液样品

Fourier transform spectrometers typically use a presumed monochromatic reference source to track and correct errors in optical path difference changes. This paper will conduct a theoretical analysis to show that non-monochromatic light sources with symmetric spectral profiles can also be used as reference sources without adding errors. An experiment was carried out using a symmetric broadband superluminescent diode (SLED) as reference light to measure the spectrum of some other SLED light sources to experimentally demonstrate this finding.

Muqian Wen

Symmetric Non-Monochromatic Light as Reference in Fourier Transform Spectrometers

傅里叶变换光谱仪中对称非单色光的参考作用

Abbreviation	Appl Spectrosc
Journal Impact	2.08
Quartiles(Global)	SPECTROSCOPY(Q2)

ISSN	0003-7028, 1943-3530
h-index	122

Publication Information	Publisher: SAGE Publications Inc.，Publishing cycle: Monthly，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 1970，Proportion of original research papers: 97.66%，Self Citation Rate:4.50%， Gold OA Rate: 12.99%
Average review cycle	网友分享经验：平均3.3个月
Average recruitment ratio	网友分享经验：较易

Applied Spectroscopy

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Effect of Mechanical Deformation on the Structure of Regenerated Bombyx mori Silk Fibroin Films as Revealed Using Raman and Infrared Spectroscopy

High-Frequency Raman Analysis in Biological Tissues Using Dual-Wavelength Excitation Raman Spectroscopy

Non-destructive Analytical Study of Raman Spectra Variations and Mechanisms of Calcite and Aragonite in Modern and Fossilized Oysters

Pulsed Terahertz Attenuated Total Reflection Spectroscopy

Integrated Optics Waveguides and Mesoporous Oxides for the Monitoring of Volatile Organic Compound Traces in the Mid-Infrared

Integrated Optics Waveguides and Mesoporous Oxides for the Monitoring of Volatile Organic Compound Traces in the Mid-Infrared

Using Polarization to Increase Contrast of Water OH Raman Scattering Relative to Fluorescence of Dissolved Organic Matter

Surface-Enhanced Raman Spectroscopy (SERS) Substrates Based on Photonic Crystal Embedded Bi-Metallic Nanoparticles for Leptospiral DNA Detection

Single-Path Supercontinuum Near- to Mid-Infrared Correlation Spectroscopy of Aqueous Samples

Symmetric Non-Monochromatic Light as Reference in Fourier Transform Spectrometers