Article
Chemistry, Multidisciplinary
Yan Ke, Bin Chen, Mengen Hu, Ningning Zhou, Zhulin Huang, Guowen Meng
Summary: This study demonstrates the controlled plasmon-mediated oxidation of para-aminothiophenol (p-ATP) using Au@Ag core-shell nanostars with tunable tip plasmons as reactors. The results show that plasmon bands of metal nanostructures play an important role in the efficiency of plasmon-driven photocatalysis.
Article
Biochemistry & Molecular Biology
Shaobo Yang, Po-Yu Chen, Chia-Chun Ni, Jun-Chen Chen, Zong-Han Li, Yang Kuo, Chih-Chung Yang, Ta-Cheng Hsu, Chi-Ling Lee
Summary: In this paper, the effects of surface plasmon coupling on the modulation responses of LED emission and down-converted lights through quantum dots are elaborated. The enhancement of modulation bandwidth through SP coupling is demonstrated. The results provide insights into the potential applications of SP coupling in improving the performance of LED-based light conversion.
Review
Optics
Qiong Zhang, Canran Zhang, Minglin Zhao, Yang Li, Jun Dai
Summary: In this study, the strong coupling between organic-inorganic hybrid perovskite MAPbBr3 films and plasmonic aluminum nanoparticle lattices is numerically investigated. The open cavity structure of the plasmonic nanoparticle lattice allows for a simple strategy to modulate the exciton-plasmon coupling strength by changing film thickness or refractive index. Simulations demonstrate the avoided crossings of polariton branches due to strong exciton-plasmon coupling. The results provide theoretical insights and potential applications for large-scale tunable polariton devices in the future.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Multidisciplinary
Danni Guo, Lixia Zhao, Hui Zhang
Summary: The fabrication of a multifunctional nanoplatform for in situ monitoring of Fenton reaction is important for understanding the reaction process and designing high-performance catalysts. In this study, a hybrid catalyst composed of single-crystalline gold nanoparticles on reduced graphene oxide was prepared, which exhibited both excellent Fenton-like catalytic activity and sensitive surface-enhanced Raman spectroscopy detection performance. This nanoplatform has potential applications in environmental catalysis.
CHINESE CHEMICAL LETTERS
(2022)
Article
Biochemical Research Methods
Yating Zhang, Buyi Xu, Zehua Wang, Rongji Yang, Leixia Zhu, Wei He, Guoyun Zhou, Jiujuan Li, Jianhui Li, Zhiwei Han, Yan Hong, Shouxu Wang
Summary: In this study, chemical visualization of analytes in fingerprints was achieved using surface-enhanced Raman spectroscopy (SERS) and spray-dispersed gold nanorods (AuNRs). The optimal coverage of AuNRs was determined through theoretical simulations and experimental operations. A rapid sampling method for the chemical of interest was developed by tuning the spray parameters. The SERS imaging of methamphetamine in fingerprint latent was attempted by analyzing the SERS spectral features of methamphetamine. This chemical visualization method provides simultaneous graphical and chemical information of fingerprints, enabling the detection and mapping of methamphetamine at a concentration of 10(-5) M. The data processing approach was improved by employing relevant logical judgments, resulting in enhanced SERS images with sharper fingerprint patterns.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Tsung-Shine Ko, Yen-Lun Chen
Summary: This study proposes a structure in which MoS2 is decorated with Au NPs on Si NSHs for SERS applications. The results show that the structure exhibits low detection limit and high enhancement factor, making it suitable for biomedical detection.
Article
Chemistry, Multidisciplinary
Riad Yahiaoui, Zizwe A. Chase, Chan Kyaw, Fuyang Tay, Andrey Baydin, G. Tim Noe, Junyeob Song, Junichiro Kono, Amit Agrawal, Motoaki Bamba, Thomas A. Searles
Summary: By enhancing the cooperation between atoms on a terahertz metasurface, strong coupling and ultrasensitive sensing required in quantum information technology can be achieved.
Article
Chemistry, Analytical
Zih-Ying Chen, Akash Gupta, Surojit Chattopadhyay
Summary: The study demonstrates the use of Surface Enhanced Raman Spectroscopy for the solution phase detection of mercury ions in contaminated cosmetics, showing high detection accuracy.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Chonghui Li, Baoyuan Man, Chao Zhang, Jing Yu, Guofeng Liu, Meng Tian, Zhen Li, Xiaofei Zhao, Zhenxing Wang, Wanling Cui, Tiejun Wang, Jihua Wang, Xiaohui Lin, Shicai Xu
Summary: In this study, a micro-extraction SERS membrane was developed for high-sensitive detection of trace analytes in complex aqueous solutions. Numerical simulations and experiments showed that this membrane, with a parallel facing state, could effectively excite multiple plasmon resonance couplings by utilizing incident photons. The proposed membrane enabled rapid detection of molecular aqueous solutions through capillary action.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Multidisciplinary
Jae-Hoon Ryu, Ha Young Lee, Jeong-Yeon Lee, Han-Sol Kim, Sung-Hyun Kim, Hyung Soo Ahn, Dong Han Ha, Sam Nyung Yi
Summary: A new method for enhancing the surface-enhanced Raman scattering (SERS) phenomenon using a new metal microstructure and metal nanowires has been proposed, leading to a higher SERS intensity.
APPLIED SCIENCES-BASEL
(2021)
Review
Spectroscopy
Sebastian Heeg, Niclas S. Mueller, Soren Wasserroth, Patryk Kusch, Stephanie Reich
Summary: The electromagnetic enhancement theory has successfully explained the fundamental properties of SERS and optimized the strongest enhancement, but there are still shortcomings in predictions, requiring further development of the SERS theory, particularly in studying the role of plasmonic enhancement in inelastic light scattering.
JOURNAL OF RAMAN SPECTROSCOPY
(2021)
Article
Chemistry, Physical
Jieun Shin, Sungwoo Lee, Sungjae Yoo, Insub Jung, Soohyun Lee, Jeongwon Kim, Jiwoong Son, Ji-Eun Kim, Jae-Myoung Kim, Jwa-Min Nam, Sungho Park
Summary: To enhance the near-field focusing around nanoscale metal particles, we designed large-sized gold double nanorings with nanoscale gaps between them. These gaps resemble hot halos where single-particle surface-enhanced Raman scattering occurs. The synthesis of these gold nanohalos was achieved using a novel strategy based on hexagonal gold nanoplates as templates. The resulting nanohalos exhibited near-field focusing, confirmed by both experimental measurements and theoretical simulation. The study also revealed a correlation between the distances of intra-nanogaps and particle sizes of gold nanohalos on single-particle surface-enhanced Raman scattering, with high enhancement factors and reproducibility.
CHEMISTRY OF MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Mengdan Guan, Yameng Zhu, Xiaoping Yue, Yan Liang, Huixiang Sheng, Jin Wang, Chengyu Zhang, Qiming Peng, Gang Lu
Summary: The study demonstrates that adsorbed positively charged methyl violet molecules on the silver nanoparticle-graphene oxide composite structure act as molecular cocatalysts, significantly boosting the coupling reaction of p-nitrothiophenol and p,p'-dimercaptoazobenzene by promoting the separation of plasmon-generated hot carriers at the interface. Reducing laser power can further enhance the MV-induced acceleration, providing a simple, efficient, and cost-effective strategy to accelerate the coupling reaction of nitroaromatic compounds.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Yang Xiong, Huatian Hu, Tianzhu Zhang, Yuhao Xu, Fei Gao, Wen Chen, Guangchao Zheng, Shunping Zhang, Hongxing Xu
Summary: We report a quantitative molecular detection method based on surface-enhanced Raman spectroscopy (SERS) that achieves ultrahigh sensitivity in detecting alpha fetoprotein in serum using a nanoparticle-on-mirror plasmonic sensor. By adjusting the gaps between the nanoparticles and the gold film, a uniform and strong SERS enhancement is achieved. The detection limit is 697 times higher than that of the normal excitation method and 7800 times higher than a commercial assay kit, providing a potential solution for the bottleneck in SERS-based biosensing.
Article
Biochemistry & Molecular Biology
Saurabh Kumar Srivastava, Gopi Suresh Oggu, Anirudh Rayaprolu, Harikishana Adicherla, Ch. Mohan Rao, Ira Bhatnagar, Amit Asthana
Summary: Surface-Enhanced Raman Spectroscopy (SERS) is a powerful technique for molecular analysis, but its use is limited due to high cost and lack of reproducibility. Recently, paper-based SERS substrates have received attention as a low-cost and flexible alternative. In this study, gold nanoparticles (GNPs) were rapidly and inexpensively synthesized on paper devices using chitosan as a reducing and capping reagent, resulting in highly uniform distribution and particle size. The resulting SERS substrate showed exceptional performance and stability, with a detection limit of 1 pM concentration of the test analyte, making it suitable for field applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Multidisciplinary
Camino Martin-Sanchez, Ana Sanchez-Iglesias, Jose Antonio Barreda-Argueso, Alain Polian, Luis M. Liz-Marzan, Fernando Rodriguez
Summary: The mechanical properties and stability of metal nanoparticle colloids under high-pressure conditions are investigated using optical extinction spectroscopy and small-angle X-ray scattering (SAXS). SAXS allows in situ monitoring of the structural evolution of nanoparticles induced by pressure, including nanoparticle size, shape, and aggregation. The differences in behavior observed under hydrostatic and nonhydrostatic conditions are explained in terms of liquid solidification processes leading to nanoparticle aggregation. The impact of nanoparticle shape on the aggregation process is also discussed.
Article
Materials Science, Multidisciplinary
Qianqian Shi, Dashen Dong, Gediminas Gervinskas, Han Lin, Debabrata Sikdar, Baohua Jia, Sumeet Walia, Sharath Sriram, Madhu Bhaskaran, Lim Wei Yap, Wenlong Cheng
Summary: This work presents a method for fabricating 3D helical plasmonic nanostructures from 2D plasmene nanosheets. By using a micro-spatula-based strategy inspired by the chocolate curls-making process, the plasmene nanosheets can be selectively scraped to free space, resulting in the spontaneous folding of the nanosheets into various complex helical nanostructures with controlled dimensions. This versatile fabrication route combines both bottom-up and top-down approaches and has potential applications in next-generation flexible nanophotonic devices.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Review
Chemistry, Multidisciplinary
Gail A. Vinnacombe-Willson, Ylli Conti, Andrei Stefancu, Paul S. Weiss, Emiliano Cortes, Leonardo Scarabelli
Summary: Plasmonic gold nanoparticles have been increasingly used in solid-state systems for their applications in fabricating novel sensors, heterogeneous catalysts, metamaterials, and thermoplasmonic substrates. This review discusses a powerful synthetic methodology called bottom-up in situ substrate growth, which allows morphologically controlled nanostructures to be formed on supporting materials through wet-chemical synthesis. The review provides an overview of the properties of plasmonic nanostructures, recent advances in the understanding of in situ geometrical and spatial control, and the applications of plasmonic hybrid materials prepared by in situ growth. However, the mechanistic understanding of these methodologies remains incomplete and offers opportunities and challenges for future research.
Review
Chemistry, Multidisciplinary
Leonardo Scarabelli, Muhua Sun, Xiaolu Zhuo, Sungjae Yoo, Jill E. Millstone, Matthew R. Jones, Luis M. Liz-Marzan
Summary: In this review, recent progress in the solution-phase growth of colloidal plate-like metal nanoparticles, including plasmonic and other metals, is summarized. Mechanistic insights for different synthetic strategies, the crystallographic habits of different metals, and the use of nanoplates as scaffolds for the synthesis of other derivative structures are emphasized. Representative self-assembly techniques and the attractive properties and unique versatility of the 2D morphology are highlighted. Existing challenges and future perspectives for plate-like metal nanomaterials are also discussed.
Article
Chemistry, Physical
Safiyye Kavak, Ajinkya Anil Kadu, Nathalie Claes, Ana Sanchez-Iglesias, Luis M. Liz-Marzan, Kees Joost Batenburg, Sara Bals
Summary: In this study, a method for automating the volumetric segmentation process applied to three-dimensional reconstructions of nanoparticle assemblies is proposed. The performance of different automated segmentation methods in accurately extracting quantitative descriptors for morphological characterization is evaluated. The results show that the spherical Hough transform exhibits superior performance in accurately extracting quantitative descriptors, allowing for an objective, efficient, and reliable volumetric segmentation of complex nanoparticle assemblies.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Jack L. Eatson, Jacob R. Gordon, Piotr Cegielski, Anna L. Giesecke, Stephan Suckow, Anish Rao, Oscar F. Silvestre, Luis M. Liz-Marzan, Tommy S. Horozov, D. Martin A. Buzza
Summary: The unique behavior of colloids at liquid interfaces provides exciting opportunities for engineering the assembly of colloidal particles into functional materials. The deformable nature of fluid-fluid interfaces enables the utilization of interfacial curvature to direct self-assembly. The study utilizes a finite element method to investigate the self-assembly of rod-shaped particles adsorbed at a curved fluid-fluid interface. The findings demonstrate that the curved interface effectively controls the orientation of the rods and allows for the manipulation of single and multiple rod-like particles for the organization of functional materials.
Article
Optics
Tanmay Bhowmik, Bhairov Kr. Bhowmik, Pranav Kr. Pandey, Gagan Kumar, Debabrata Sikdar
Summary: By engineering meta-atoms, tunable metamaterials have opened up new possibilities for active control of light absorption. In this study, a broadband electrically-tunable metamaterial absorber is proposed for simultaneous modulation of reflected light amplitude in the O-band and C-band. Through the coupling of gap plasmon resonance and epsilon-near-zero phenomenon, real-time control of reflected light amplitude is achieved. The proposed metamaterial absorber demonstrates more than 80% absorption over a 370 nm spectral window and allows for amplitude modulation with high extinction ratios at specific wavelengths.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Javier Plou, Pablo S. Valera, Isabel Garcia, David Vila-Liarte, Carlos Renero-Lecuna, Jesus Ruiz-Cabello, Arkaitz Carracedo, Luis M. Liz-Marzan
Summary: During the response to stress, damaged cells release metabolites and secretomes, which can be utilized in anticancer therapies and biomarker predictions. However, monitoring these processes is challenging, leading to the development of noninvasive secretome screening tools. Machine learning methods and microfluidic chips were used to identify secretome variations and classify cell death, allowing for faster implementation of surface-enhanced Raman scattering (SERS) into cell secretome classification.
Article
Materials Science, Multidisciplinary
Manuel Obelleiro-Liz, Victor F. Martin, Diego M. Solis, Jose M. Taboada, Fernando Obelleiro, Luis M. Liz-Marzan
Summary: Chiral metal nanoparticles can induce and harness optical activity, but there is limited control over their morphological detail and resulting optical activity due to incomplete knowledge of growth mechanisms. This study uses computer-aided design and simulations to analyze the influence of structural changes on the plasmonic circular dichroism spectra of rod-shaped gold nanoparticles. Interesting patterns in plasmon-mediated resonant behavior are identified, which can guide the understanding and fabrication of these nanoparticles for applications such as spectroscopic detection and surface-enhanced Raman optical activity.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Evgenii Vlasov, Alexander Skorikov, Ana Sanchez-Iglesias, Luis M. Liz-Marzan, Johan Verbeeck, Sara Bals
Summary: Electron tomography (ET) is a powerful tool for determining the 3D structure of nanomaterials, but it is time-consuming. Surface-sensitive secondary electron (SE) imaging, using the SE electron beam induced current (SEEBIC) technique, is proposed as an alternative to ET for studying nanomaterial morphology. SEEBIC imaging provides valuable information with high spatial resolution and shorter throughput times compared to ET. The contrast formation mechanisms that aid in interpreting SEEBIC data are also discussed.
ACS MATERIALS LETTERS
(2023)
Editorial Material
Chemistry, Multidisciplinary
Warren C. W. Chan, Natalie Artzi, Chunying Chen, Xiaodong Chen, Dean Ho, Tony Hu, Kazunori Kataoka, Luis M. Liz-Marzan, Rahmi Oklu, Wolfgang J. Parak
Article
Radiology, Nuclear Medicine & Medical Imaging
Priyanka Das, Jegyasu Gupta, Debabrata Sikdar, Ratnajit Bhattacharjee
Summary: Magnetic resonance imaging (MRI) is a non-invasive technique for clinical diagnosis. The signal-to-noise ratio (SNR) is crucial for MRI performance, and the use of metasurfaces as accessories has shown potential for enhancing SNR. A specifically designed metasurface with complementary-type resonant structures on a high-permittivity dielectric significantly increases magnetic flux density on the skin, resulting in a 40-fold boost in SNR on the skin in 1.5 T MRI while keeping tissue heating below the safety limit. The designed metasurface can make MRI scans more efficient and affordable.
MAGNETIC RESONANCE IMAGING
(2023)
Article
Chemistry, Multidisciplinary
Kyle Van Gordon, Sandra Baulde, Mikhail Mychinko, Wouter Heyvaert, Manuel Obelleiro-Liz, Alejandro Criado, Sara Bals, Luis M. Liz-Marzan, Jesus Mosquera
Summary: The concentration of the chiral inducer can control the chiral morphology and chiroptical properties of gold nanomaterials, offering potential for advancements in biosensing and nano-optics.
Article
Chemistry, Multidisciplinary
Carla Estevez-Varela, Sara Nunez-Sanchez, Paula Pineiro-Varela, Dorleta Jimenez de Aberasturi, Luis M. Liz-Marzan, Jorge Perez-Juste, Isabel Pastoriza-Santos
Summary: Plexcitonic nanoparticles, which exhibit strong light-matter interactions, have been investigated using UV-visible and SERS spectroscopies, supported by FDTD calculations in this study. The combination of plasmonic nanomaterials and J-aggregates is found to be crucial, with the refractive index contrast between water and the TDBC shell playing a significant role in the observed SERS efficiency.
