Article
Multidisciplinary Sciences
Andreij C. Gadelha, Douglas A. A. Ohlberg, Cassiano Rabelo, Eliel G. S. Neto, Thiago L. Vasconcelos, Joao L. Campos, Jessica S. Lemos, Vinicius Ornelas, Daniel Miranda, Rafael Nadas, Fabiano C. Santana, Kenji Watanabe, Takashi Taniguchi, Benoit van Troeye, Michael Lamparski, Vincent Meunier, Viet-Hung Nguyen, Dawid Paszko, Jean-Christophe Charlier, Leonardo C. Campos, Luiz G. Cancado, Gilberto Medeiros-Ribeiro, Ado Jorio
Summary: The twisted bilayer graphene undergoes self-organized lattice reconstruction, resulting in the formation of a superlattice that modulates vibrational and electronic structures, leading to phenomena such as strong correlations and superconductivity. Although experimental techniques and theoretical models face challenges in observing and describing these effects, nano-Raman spectroscopy can localize some vibrational modes and provide insights into the effects of electron-phonon coupling on the material properties.
Article
Chemistry, Physical
Han-Kyu Choi, Sang-Min Park, Jeeyoon Jeong, Hankyul Lee, Gyu Jin Yeon, Dai-Sik Kim, Zee Hwan Kim
Summary: In this study, a simple photolithographic method was demonstrated to generate highly sensitive SERS hot spot structures at desired positions. The solid-state dewetting of an Ag thin film using a continuous-wave laser resulted in the formation of closely packed assemblies of hemispherical Ag nanoislands with substantial plasmonic-field enhancement. These hot spot structures can be utilized as position-specific chemical-sensing elements in integrated analytical devices.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Daniel Vala, Martin Micica, Daniel Cvejn, Kamil Postava
Summary: Spectroscopic Mueller matrix ellipsometry is a widely used technique that offers reliable and non-destructive analysis of various samples by tracking polarization-related physical properties. By combining it with a physical model, it can provide precise measurements and versatile applications. However, its interdisciplinary adoption is limited and it is often overshadowed by other techniques. In this study, Mueller matrix ellipsometry is applied to chiroptical spectroscopy to analyze the optical activity of a saccharides solution. The method is validated by studying the rotatory power of glucose, fructose, and sucrose, and it is further used to determine mutarotation rate constants and gyration tensor of glucose anomers.
Article
Materials Science, Multidisciplinary
Daohan Ge, Yuan Zhang, Hui Chen, Guangfu Zhen, Minchang Wang, Jiwei Jiao, Liqiang Zhang, Shining Zhu
Summary: This study investigates the impact of surface morphology and roughness of patterned silicon nitride substrates on graphene, discovering a strong correlation with Raman scattering and stress. The peak red-shifts in 2D and G bands of graphene are attributed to strain induced by different surface morphology and roughness patterns. It is found that the effect of morphology on patterned areas is more pronounced than the role of surface roughness in inducing strain in graphene.
MATERIALS & DESIGN
(2021)
Article
Chemistry, Multidisciplinary
Manh Cuong Nguyen, Truc Quynh Ngan Luong, Thi Thu Vu, Cao Tuan Anh, Tran Cao Dao
Summary: This study focuses on the synthesis of wool roll-like silver nanoflowers (AgNFs) using a mixed ethanol/water solution, which reduces the size of AgNFs and enhances the SERS substrate. The smaller size of AgNFs leads to higher intensity of characteristic bands in SERS spectrum of carbendazim (CBZ), allowing for detection at lower concentrations.
Article
Chemistry, Multidisciplinary
Yang Luo, Alberto Martin-Jimenez, Rico Gutzler, Manish Garg, Klaus Kern
Summary: Tip-enhanced Raman spectroscopy (TERS) allows for the tracing of vibrational fingerprints of molecules and low-dimensional materials with subnanometer resolution. The localization of light in the plasmonic nanocavity of the STM enables high spatial resolution in STM-TERS. However, the temporal resolution is currently limited. In this study, stable TERS measurements were demonstrated from subphthalocyanine (SubPc) molecules excited by 500 fs long laser pulses in a low-temperature (LT) ultrahigh-vacuum (UHV) STM. The intensity of the TERS signal scales linearly with the increasing flux of the laser pulses and exponentially with the decreasing gap-size of the plasmonic nanocavity. Furthermore, the characteristic features of TERS excited with ultrashort pulses were compared with those excited with a continuous-wave (CW) laser.
Review
Chemistry, Physical
Katsuyoshi Ikeda
Summary: SERS spectroscopy is a versatile tool for studying surface phenomena under electrochemical or photoelectrochemical conditions. The recent advancements in optical filter technology have extended the frequency range covered by a conventional single-stage Raman spectrometer into the terahertz or far-infrared range. The frequency-extended SERS provides complementary mass and chemical information simultaneously, allowing for a better understanding of heterogeneous reactions at the molecular scale.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Chemistry, Physical
Duy Quang Dao, Thi Chinh Ngo, Thi Thuy Huong Le, Quang Thang Trinh, Thi Le Anh Nguyen, Bui The Huy, Nguyen Ngoc Tri, Nguyen Tien Trung, Minh Tho Nguyen
Summary: SERS was employed to study the chemical enhancement mechanism of 2,4,5-T on a silver substrate, revealing stable adsorption configuration and electron transfer mechanism. The results are important for designing mobile sensors for rapid screening of toxic compounds.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Chemistry, Physical
Aleksandra Michalowska, Kacper Jedrzejewski, Andrzej Kudelski
Summary: Abnormal metabolism or imbalance of dopamine can lead to neurological disorders. A study found that certain salts strongly influence the spectral patterns and intensity of the SERS spectra of dopamine adsorbed on a silver substrate. Additionally, the addition of electrolytes significantly increases the intensity of the SERS spectrum, allowing for a lower limit of detection of dopamine. These findings may aid in the development of dopamine SERS sensors.
Article
Materials Science, Multidisciplinary
Sung-Hyun Kim, Ha Young Lee, Jae-Hoon Ryu, Jeong-Yeon Lee, Han-Sol Kim, Hyung Soo Ahn, Dong Han Ha, Sam Nyung Yi
Summary: This study aimed to enhance surface plasmon resonance by combining Ag nanoparticles and an asymmetric crater structure. The results showed that the Raman intensity inside the crater with Ag nanoparticles and nanowires was 22 times higher compared to a flat area without nanoparticles. However, an increase in the amount of nanowires led to a decrease in Raman intensity.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Taichi Isogai, Masayuki Uranagase, Kenta Motobayashi, Shuji Ogata, Katsuyoshi Ikeda
Summary: The unique properties of liquid water are mainly due to the hydrogen-bond networks of water molecules. These networks have a significant impact on biological and chemical processes. Understanding the properties of interfacial water molecules at solid surfaces is crucial for studying heterogeneous reactions. However, direct monitoring of the dynamics of these molecules has been limited. In this study, we demonstrate that hydrogen-bond vibrations can be measured in situ at an electrochemical interface using surface-enhanced inelastic light scattering spectra. This work provides new insights for in situ spectroscopic investigations in heterogeneous reactions.
Article
Materials Science, Multidisciplinary
Giovanni Borgh, Corrado Bongiorno, Antonino La Magna, Giovanni Mannino, Alireza Shabani, Salvatore Patane, Jost Adam, Rosaria A. Puglisi
Summary: Surface plasmons (SP) arising from nanometer silicon objects have significant advantages in controlling and manipulating light at the nanoscale in various research areas. However, the plasmon mechanisms of silicon need to be thoroughly studied as they have not yet been fully understood and exploited. The influence of nanowire shape and the existence of physical constraints for surface plasmon excitation remain to be fully understood.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Chemistry, Multidisciplinary
Ramona Jurgeleit, Benjamin Grimm-Lebsanft, Benedikt Maria Floeser, Melissa Teubner, Soren Buchenau, Laura Senft, Jonas Hoffmann, Maria Naumova, Christian Naether, Ivana Ivanovic-Burmazovic, Michael Ruebhausen, Felix Tuczek
Summary: The study demonstrates that low-temperature oxygenation of copper complexes results in the formation of unique tetranuclear mixed-valent peroxo compounds, which promote O-O bond homolysis and catalytic activity, showing efficient catalytic activity towards organic substrates.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Penelope Rodriguez-Zamora, Cedric A. Cordero-Silis, Jorge Fabila, Jonathan Casildo Luque-Ceballos, Fernando Buendia, Alejandro Heredia-Barbero, Ignacio L. Garzon
Summary: This study characterizes the interaction between cysteine and gold, silver, and copper nanoparticles through experimental analysis and theoretical calculations. The results show that while the C-S bond and carboxyl group are similarly affected by adsorption, the amino group is influenced by the electronegativity of each metal. Theoretical calculations suggest the formation of organic-metallic complexes with different conformations on the surfaces of gold, silver, and copper nanoparticles.
Article
Chemistry, Physical
Junhong Yu, Yadong Han, Longyu Wang, Fang Xu, Hang Zhang, Yuying Yu, Qiang Wu, Jianbo Hu
Summary: Research demonstrates that nonlinear phononics can be achieved through the electronic route, in addition to introducing nonlinearity via ionic Raman scattering. By using coherent phonon spectroscopy with a pump energy larger than the band gap in layered ReSe2, nonlinear coupling between Raman-active phonons was observed.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Review
Chemistry, Multidisciplinary
Karol Kolataj, Jan Krajczewski, Andrzej Kudelski
ENVIRONMENTAL CHEMISTRY LETTERS
(2020)
Article
Spectroscopy
Jan Krajczewski, Aleksandra Michalowska, Andrzej Kudelski
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2020)
Article
Chemistry, Multidisciplinary
Robert Ambroziak, Jan Krajczewski, Marcin Pisarek, Andrzej Kudelski
Article
Spectroscopy
E. Proniewicz, I Maluch, A. Kudelski, A. Prahl
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2020)
Review
Chemistry, Multidisciplinary
Jan Krajczewski, Robert Ambroziak, Andrzej Kudelski
Summary: Surface-Enhanced Raman Scattering (SERS) refers to the phenomenon where the efficiency of generating Raman spectra by molecules adsorbed on some substrates is many orders of magnitude larger than those that are not adsorbed. Significant advances have been made in utilizing nanostructured non-metallic materials as SERS substrates, showing great potential for future applications.
Review
Spectroscopy
Aleksandra Jaworska, Kamilla Malek, Andrzej Kudelski
Summary: The pH value in different parts of protoplasm is crucial for cell functions, leading to the necessity of intracellular acid-base studies. This review article focuses on intracellular pH measurements using SERS and fluorescence, discussing the theoretical background, experimental approach, motivations, and future perspectives in this field.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Biochemistry & Molecular Biology
Edyta Pyrak, Kacper Jedrzejewski, Aleksandra Szaniawska, Andrzej Kudelski
Summary: Research indicates that layers formed from single-stranded DNA on nanostructured plasmonic metals can be utilized as working elements in SERS sensors for sensitively and accurately identifying specific DNA fragments in biological samples. This study proposes two modifications to the standard method for depositing DNA on SERS-active structures, resulting in stronger SERS signals from the DNA layers.
Article
Biochemistry & Molecular Biology
Aleksandra Michalowska, Andrzej Kudelski
Summary: The study introduces a novel magnetic-silver plasmonic nanomaterial that can be manipulated using a magnetic field and applied in Raman spectroscopy. By creating nanoresonators on silver plasmonic structures, the intensity of electromagnetic radiation can be enhanced across a wider frequency range.
Article
Chemistry, Physical
Marcin Pisarek, Robert Ambroziak, Marcin Holdynski, Agata Roguska, Anna Majchrowicz, Bartlomiej Wysocki, Andrzej Kudelski
Summary: This work demonstrates the use of powder bed fusion using a laser beam (PBF-LB) for the production of 3D titanium substrates for surface-enhanced Raman scattering (SERS) measurements. By modifying the 3D titanium surface with TiO2 nanotubes and depositing silver nanoparticles, highly efficient SERS substrates with high stability and repeatability were obtained. This combination of printed metal substrates and nanofunctionalization opens new possibilities for SERS substrates in analytical chemistry applications.
Review
Chemistry, Analytical
Aleksandra Szaniawska, Kinga Mazur, Dominika Kwarta, Edyta Pyrak, Andrzej Kudelski
Summary: This article reviews the applications of surface-enhanced Raman scattering (SERS) spectroscopy in medical diagnostics, including multiplexing and drug monitoring. Selected examples of SERS detection of DNA, bacteria, viruses, and disease-related proteins are presented. The fundamental theoretical background of SERS spectroscopy is also briefly outlined, providing insights for researchers entering this field.
Editorial Material
Chemistry, Physical
Stanislaw Waclawek, Andrzej Kudelski, Jochen A. Lauterbach, Dionysios D. Dionysiou
Article
Chemistry, Physical
Aleksandra Michalowska, Kacper Jedrzejewski, Andrzej Kudelski
Summary: Abnormal metabolism or imbalance of dopamine can lead to neurological disorders. A study found that certain salts strongly influence the spectral patterns and intensity of the SERS spectra of dopamine adsorbed on a silver substrate. Additionally, the addition of electrolytes significantly increases the intensity of the SERS spectrum, allowing for a lower limit of detection of dopamine. These findings may aid in the development of dopamine SERS sensors.
Article
Chemistry, Multidisciplinary
Lina Mikoliunaite, Martynas Talaikis, Aleksandra Michalowska, Jorunas Dobilas, Voitech Stankevic, Andrzej Kudelski, Gediminas Niaura
Summary: In this study, composite magneto-plasmonic nanoparticles (Fe3O4@AgNPs) were successfully synthesized and showed superior performance in terms of signal intensity and reproducibility in SERS measurements. The average density of silver nanoparticles and the plasmonic resonance frequency of Fe3O4@AgNPs could be controlled by adjusting the initial volumes of colloid solutions.
Editorial Material
Chemistry, Multidisciplinary
Andrzej Kudelski
Review
Chemistry, Multidisciplinary
Jan Krajczewski, Robert Ambroziak, Andrzej Kudelski
Summary: This review article discusses various methods for light-induced manipulation of plasmonic nanoobjects and provides examples of applications in surface-enhanced vibrational spectroscopies, catalysis, chemical analysis, biomedicine, and more. Researchers interested in this field may find a detailed comparative analysis of the methods used for light-induced manipulation of nanostructures useful.
Article
Chemistry, Physical
Erhao Gao, Wenjing Feng, Qi Jin, Li Han, Yi He
Summary: The influence of K-doping on the reactive oxygen species and elementary reactions of HCHO catalytic oxidation was investigated using density functional theory (DFT). The introduction of K-doping changed the electronic structures of Ce and O, facilitating the adsorption and activation of HCHO and O2 molecules, enhancing lattice oxygen mobility, and reducing the energy barrier for HCHO oxidation. K-doping also promoted the formation of hydroxyl groups, facilitating HCHO adsorption and oxidation.
Article
Chemistry, Physical
Hao Fu, Zhangliang Xu
Summary: In this study, the adsorption mechanisms and detection performance of formaldehyde, ammonia, and sulfur dioxide on undoped and metal-doped ZnO surfaces were investigated using density functional theory. The results showed that formaldehyde and ammonia were physically adsorbed on the undoped ZnO surface, while sulfur dioxide was weakly chemisorbed. The adsorption energy was enhanced when ZnO was doped with metals. These findings provide theoretical guidance for the application of ZnO substrate materials in gas sensitivity research.
Article
Chemistry, Physical
Atsushi Nomura, Tohru Kurosawa, Migaku Oda, Satoshi Demura, Shogo Kuwahara, Sora Kobayashi, Hideaki Sakata
Summary: The study investigates the tunneling spectra of 1T-TiSe2 in the CDW state and the dip structure below the Fermi level, aiming to determine whether this dip is a CDW gap. The answer to this question is crucial for understanding the driving mechanism of CDW.
Article
Chemistry, Physical
A. S. Petrov, D. I. Rogilo, A. I. Vergules, V. G. Mansurov, D. V. Sheglov, A. V. Latyshev
Summary: This study investigates Si mass transport and morphological transformations on the Si(111) surface during (root 3 x root 3)-Sn reconstruction formation and Si homoepitaxy. The research shows that the formation of different Sn phases at different temperatures affects the Si island nucleation and monatomic step shift, which in turn impact the morphology of the Sn/Si(111) interface. Electromigration-induced drift of disordered Sn domains leads to enhanced noncompensated Si mass transport and surface roughening.
Article
Chemistry, Physical
D. V. Gruznev, L. V. Bondarenko, A. Y. Tupchaya, A. A. Yakovlev, A. N. Mihalyuk, A. V. Zotov, A. A. Saranin
Summary: Deposition of thallium (Tl) onto the Au/Si(111)5 x 2 reconstruction followed by annealing results in the formation of a surface structure with 4 x 2 periodicity. The immiscibility of Au and Tl leads to the migration of Tl atoms over the Si chains. Thallium donates electrons to the surface, converting the metallic surface into an insulating state and altering the inter-chain distance within the array of Au atomic wires.
Article
Chemistry, Physical
Simone Giusepponi, Francesco Buonocore, Barbara Ferrucci, Massimo Celino
Summary: Using ab-initio calculations, the interaction between lead adatom and both clean and doped iron (100) surfaces was investigated. It was found that the lead adatom prefers to adsorb in the hollow site, which is more stable compared to the top and bridge sites, and in this position, it is energetically favorable over the iron adatom. Moreover, lead adsorbed in the hollow site of the iron (100) surface doped with chromium was found to create a more stable system compared to nickel-doped surfaces with an iron adatom in the same position. The study also explored inter-layer distances, bonding mechanisms, magnetic behaviors, and charge density differences. The results provide insights into the role of doping in the interaction between lead adatom and iron surface, and have implications for the analysis of corrosion processes caused by liquid lead.
Article
Chemistry, Physical
Shuo Zhang, Jin-Ho Choi
Summary: The recent synthesis of two-dimensional layered WSi2N4 has attracted attention due to its potential applications. This study investigates the catalytic performance of WSi2N4 monolayers with nitrogen vacancies in the hydrogen evolution reaction using first-principles calculations. The results show that the defective WSi2N4 monolayers exhibit remarkably high catalytic activity comparable to platinum catalysts. Electronic structure calculations also reveal the emergence of spin-polarized states due to the introduction of nitrogen vacancies.
Article
Chemistry, Physical
Xiaoyan Yu, Xin Cao, Wei Kang, Shanhua Chen, Ao Jiang, Yuhao Luo, Wenwei Deng
Summary: First-principles calculations were used to investigate the electronic properties of a TiO2 heterostructure modified with Bi2Te3 co-catalyst. The study revealed that the Bi2Te3/TiO2 interface introduced optimal band offsets, effectively suppressing electron-hole recombination and enhancing the utilization efficiency of photo-generated carriers. Additionally, the Bi2Te3 co-catalyst introduced extra catalytic active sites, further boosting the photo-catalytic hydrogen evolution efficiency.
Article
Chemistry, Physical
Filippo Longo, Emanuel Billeter, Selim Kazaz, Alessia Cesarini, Marin Nikolic, Aarati Chacko, Patrik Schmutz, Zbynek Novotny, Andreas Borgschulte
Summary: Alkaline water electrolysis is a simple and efficient method for renewable hydrogen production, utilizing cheap and abundant transition metals. The catalytic properties of Ni materials are enhanced by the formation of oxidized compounds on the surface. The high electrocatalytic activity of Ni (oxy)-hydroxides is directly related to water intercalation in the passivation layer, supporting the hypothesis of a water mediated OH- diffusion mechanism. The self-organization of the surface structure during passivation layer formation enables high electrode performance.
Article
Chemistry, Physical
Mohan Kumar Kuntumalla, Miriam Fischer, Alon Hoffman
Summary: By investigating the bonding, retention, and thermal stability of nitrogen in H-Diamond (100), it was found that nitrogen can partially recover its bonding with carbon atoms after high-temperature annealing, indicating a high thermal stability of nitrogen in diamond.
Article
Chemistry, Physical
Dong Yue, Liangying Wen, Rong Chen, Jianxin Wang, Zhongqing Yang
Summary: The adsorption behavior of Cl2 molecules on the TiC surface and the formation and transfer of reaction products were studied using first-principles ab initio calculations. The results show that the Cl atoms bonded to the surface Ti atoms are more stable, and the TiCl3 intermediate is easier to form than the TiCl2 intermediate.
Article
Chemistry, Physical
Yatao Wang, Peng Zhang, Hongjuan Li, Qiuju Xu, Shujun Liu, Xiaopeng Liu, Xuehua Guo, Yitao Li, Jinzhang Liu, Sen Dong, Zhi Wei Seh, Qianfan Zhang
Summary: In this study, the adsorption performance of two types of metal-organic frameworks (MOFs) for thiophene and benzene was experimentally investigated. The results showed that IZE-1 exhibited high selectivity and superior adsorption capacity for thiophene, especially at low concentrations. First-principles calculations and molecular dynamics simulations provided insights into the mechanism of thiophene adsorption and the high selectivity observed. This research demonstrates the potential of MOFs for thiophene adsorption, particularly at high concentrations.
