Article
Nanoscience & Nanotechnology
Zhidong Zheng, Meng Shi, Yu Xu, Shaojing Liu, Huiqing Zhong, Qian Shou, Jianlin Huang, Tianyang Luan, Zongbao Li, Xiaobo Xing
Summary: Lab-on-fiber (LOF), as a highly functional platform, has shown great potential in ultrasensitive SERS detection. In this study, a reusable SERS-based LOF platform was developed with a patterned microfluidic chip and a gold-coated optical fiber. Laser-induced thermophoresis was utilized to achieve rich hot spots on the fiber within 5 minutes. The platform exhibited low detection limit and excellent reversibility and stability, making it a promising tool for SERS detection.
ACS APPLIED NANO MATERIALS
(2022)
Article
Optics
Tianan Yi, Wei Su, Qiang Yu, Hua Wu, Kun Guo, Haiqing Deng, Cheng Yin, Juntao Yan, Jian Wu, Bingyan Chen
Summary: This study presents a flexible SERS substrate with high sensitivity, low cost, simple processing, high yield, and good activity by modifying the flexible substrate using corona discharge technique. The modified substrate showed high sensitivity to Rhodamine 6G and exhibited a significant enhancement effect.
Article
Optics
Yu Xu, Huiqing Zhong, Meng Shi, Zhidong Zheng, Shaojing Liu, Qian Shou, Heng Li, Guanjie Yang, Zongbao Li, Xiaobo Xing
Summary: The rapid photothermal self-assembly of Au nanoparticles in water provides a highly sensitive SERS substrate for detecting chemical pollutants. The smart reversible assembly allows for tuning SERS activity, showing promising applications in SERS-based sensors and environmental pollutant detection.
Review
Nanoscience & Nanotechnology
Yajuan Liu, Mei Li, Haisha Liu, Chao Kang, Xiyong Yu
Summary: Nanoparticle-based drug delivery systems have the potential to enhance the properties of drugs by enabling targeted delivery. Monitoring the intracellular behavior of nanoparticles is crucial but challenging. The recent advancements in Raman techniques provide a versatile tool for noninvasive cellular measurements.
INTERNATIONAL JOURNAL OF NANOMEDICINE
(2023)
Article
Chemistry, Multidisciplinary
Renting Jiang, Jianqin Li, Linhu Li, Yaxuan Lu, Huiming Zhang, Ming Li
Summary: This study investigates the plasmonic and photothermal properties of spiky Au nanoparticles with different shaped central cores, and reveals that spiky Au nanospheres and spiky Au nanocubes are superior for SERS detection and hyperthermia therapy compared to spiky Au nanorods.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Yawen Liu, Hao Ma, Xiao Xia Han, Bing Zhao
Summary: SERS has become an important tool in chemical analysis, materials science, and biomedical research. The development and application of metal-semiconductor heterostructures in SERS research have shown great potential for diverse applications and advancement in photovoltaic devices and chemical/biological sensing. The unique photoelectric properties and giant SERS signals of metal-semiconductor heterostructures contribute to their significant role in enhancing light harvesting and conversion.
MATERIALS HORIZONS
(2021)
Article
Chemistry, Analytical
Ruipeng Chen, Yunfeng Sun, Bingyang Huo, Zefeng Mao, Xiaojuan Wang, Shiyu Li, Ran Lu, Shuang Li, Jun Liang, Zhixian Gao
Summary: A universal surface-enhanced Raman scattering (SERS) aptasensor was developed for the detection of Zearalenone (ZEN) with a linear detection range from 0.005 to 500 ng mL(-1) and a detection limit of 0.001 ng mL(-1). The sensor showed excellent performance for analytical applications with real-world samples.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
I. A. Brezestean, N. Tosa, A. Falamas, D. Cuibus, C. M. Muntean, A. Bende, B. Cozar, C. Berghian-Grosan, C. Farcau
Summary: This study reports on the use of self-assembled colloidal nanoparticle films for Surface Enhanced Raman Spectroscopy (SERS) analysis of pesticides. The results demonstrate the high sensitivity and selectivity of this technique, making it suitable for applications in the food industry and environmental monitoring.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Physical
K. Monisha, Aseefhali Bankapur, Santhosh Chidangil, Sajan D. George
Summary: Laser-induced heating assisted assembly allows trapping and assembling of yeast cells and upconversion particles at low intensities, with thermal convective flow playing a vital role. Laser intensity increase leads to object assembly at the liquid-substrate interface, and tunneling of objects towards the irradiation zone is demonstrated.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Engineering, Electrical & Electronic
Ren Odion, Yang Liu, Tuan Vo-Dinh
Summary: Cancer is a leading cause of death worldwide, prompting significant efforts in developing novel technologies for early detection and treatment. Gold nanoparticles, especially gold nanostars, have gained attention for their application in photo-induced hyperthermia coupled with immunotherapy, offering a promising platform for highly selective and less invasive cancer treatment.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Suhyeon Park, Cheongwon Bae, Jaedeok Lee, Jeongeon Kim, Ming Lin, Juyeong Kim
Summary: This study demonstrates the preparation of finite assemblies of anisotropic gold nanorods through encapsulation by a zeolitic imidazolate framework-8 (ZIF). The assembled nanorods were found to form separate bundles aligned side-by-side, with each bundle serving as a nucleation center for a cube-shaped ZIF domain. The assembly pattern and shell dimension were shown to be controllable by adjusting the concentrations of cysteamine and surfactant, indicating potential for tailored applications of these assemblies.
ACS APPLIED NANO MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Sergio Kogikoski, Kosti Tapio, Robert Edler von Zander, Peter Saalfrank, Ilko Bald
Summary: Surface-enhanced Raman scattering is a powerful method to detect molecules at very low concentrations. In this study, gold nanoparticle dimers were self-assembled using DNA origami nanotriangles, with Cy5 and TAMRA as SERS probes. The results showed that the EFs for the dimeric assemblies follow a log-normal distribution and that plasmonic resonance is the main source of the observed signal.
Article
Physics, Multidisciplinary
Hesham Fares, Moustafa Ahmed, Samar Moustafa
Summary: This study investigates the Localized Surface Plasmon Resonance (LSPR) in graphene-assisted core-bishell nanoparticles. Analytic equations are developed using the quasi-static approximation to describe the absorption, scattering, and extinction efficiencies. The nanostructures exhibit two LSPRs, with one in the visible range and corresponding to a plasmon mode of the core-inner shell composite, and the other in the near infrared (NIR) induced by graphene plasmons. The LSPR of graphene has an ultra-narrow bandwidth and can be tuned in the NIR, making it promising for medical applications. Moreover, the LSPR of graphene can be tuned to the visible range, resulting in two narrow linewidth peaks that are beneficial for highly sensitive LSPR-based sensors.
Article
Chemistry, Multidisciplinary
Jinchi Han, Farnaz Niroui, Jeffrey H. Lang, Vladimir Bulovic
Summary: The absence of a versatile, scalable, and defect-free bottom-up assembly of nanoparticles has been a challenge for the large-scale integration of nanoparticle-based devices. In this study, we propose a self-limiting dielectrophoretic approach that can precisely align nanoparticles onto electrodes over a large area. Experimental results show a 70% yield of single-nanowire assembly, and factors limiting the current yield are discussed. Improving nanoparticle-electrode contact and reducing capillary force during the drying process are expected to further increase the yield. The approach also demonstrates versatility for scalable and site-selective alignment of various nanoparticles.
Article
Chemistry, Multidisciplinary
Sisi Yan, Jiacheng Sun, Bin Chen, Lang Wang, Sumin Bian, Mohamad Sawan, Haibin Tang, Liaoyong Wen, Guowen Meng
Summary: This article presents a universal SERS platform for reliable and sensitive identification of a wide range of analytes. The key to its success lies in the prepared slot-under-groove nanoarchitecture arrays, which enable strong coupled field enhancement and large spatial mode distribution, thereby delivering high sensitivity for small-sized analytes and large Raman gain for large-sized analytes.
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.
Editorial Material
Chemistry, Multidisciplinary
Leonardo Scarabelli
Summary: In this study, the mechanism behind plasmon-enhanced luminescence induced by gold nanostructures was investigated using electrochemiluminescence microscopy. Gold plasmonic arrays were used for rapid spectroscopic evaluation of individual nanostructures, and the results were correlated with high-resolution electron microscopy analysis. The authors identified two different mechanisms for the enhancement of [Ru(bpy)(3)](2+)-tri-n-propylamine electrochemiluminescence mediated by single gold nanoparticles and by small plasmonic clusters. In the future, this characterization technique can be applied for rapid and in situ spectroscopic analysis of more complex plasmonic nanostructures and metasurfaces.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Multidisciplinary
Jesus Mosquera, Da Wang, Sara Bals, Luis M. Liz-Marzan
Summary: Gold nanorods (Au NRs) are highly promising tools in nanotechnology due to their strong interaction with electromagnetic radiation, tunable resonance frequency, and easy preparation. Surfactants play a critical role in controlling the size, shape, and stability of Au NRs, but the interaction between Au NRs and surfactants is not well understood. This article reviews the current knowledge on these interactions and explores methods for synthesizing and modifying Au NRs.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Uwe Frank, Dominik Drobek, Ana Sanchez-Iglesias, Simon E. Wawra, Nico Nees, Johannes Walter, Lukas Pflug, Benjamin Apeleo Zubiri, Erdmann Spiecker, Luis M. Liz-Marzan, Wolfgang Peukert
Summary: Multidimensional particle properties are crucial in determining the product properties in advanced applications. Accurate and statistically meaningful measurements of complex particles and their distributions are highly challenging but necessary. A workflow for calculating frictional properties of arbitrarily shaped nanoparticles was developed and applied to gold bipyramids, showing good agreement with transmission electron microscopy measurements except for a slight shift caused by differences in assumed and real particle shape and composition.
Article
Chemistry, Multidisciplinary
Pavana Siddhartha Kollipara, Zhihan Chen, Yuebing Zheng
Summary: Optothermal manipulation is a versatile technique that combines optical and thermal forces to control micro-/nanoparticles and biological entities. It overcomes the limitations of traditional optical tweezers and has a wide range of applications in biology, nanotechnology, and robotics. However, there are current challenges in experimental and modeling aspects, which need to be addressed for further advancements in this field.
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
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
Chemistry, Multidisciplinary
Zhihan Chen, Hongru Ding, Pavana Siddhartha Kollipara, Jingang Li, Yuebing Zheng
Summary: Researchers propose a novel optical feedback control system that can mimic collective motion observed in living objects. This system allows for experimental investigation of velocity alignment in a perturbed environment, and spontaneous formation of different moving states and dynamic transitions were observed.
ADVANCED MATERIALS
(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
Materials Science, Multidisciplinary
Ylli Conti, Nicolas Passarelli, Jose Mendoza-Carreno, Leonardo Scarabelli, Agustin Mihi
Summary: The narrow spectral features of surface lattice resonances are highly suitable for the rational design of optical nanocavities aiming at enhanced light-matter interaction, ultrasensitive detection, or efficient light-energy conversion. Traditional fabrication methods for metal arrays are limited in scalability and adaptability, while template-assisted self-assembly offers a high-throughput approach for implementing colloidal plasmonic metasurfaces on various materials. In this study, pre-synthesized silver nanoparticles are used to construct versatile lasing architectures directly on the gain media, resulting in optical nanocavities with high-quality factors. The proposed architecture eliminates the need for an index-matching superstrate and allows for post-assembly modification of the plasmonic surface. Additionally, the angular dispersion of the metasurfaces is utilized to modify the angle of the lasing emission, achieving normal and off-normal lasing by adjusting the lattice parameter of the array. This research highlights the scalable and versatile nature of colloidal self-assembly techniques for the fabrication of plasmonic and photonic devices targeting advanced and non-linear optical phenomena.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Marcel Herber, Ana Jimenez Amaya, Nicklas Giese, Bharath Bangalore Rajeeva, Yuebing Zheng, Eric H. Hill
Summary: The printing of layered silicate nanoclays using a laser-directed microbubble was established, and the influence of surface chemistry on the resulting assembly was studied. This work also demonstrated the potential of this method in fabricating ultrasensitive molecular sensors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
