Article
Chemistry, Physical
Jan Krajczewski, Ewa Dumiszewska, Dariusz Czolak, Sylwia Turczyniak Surdacka, Andrzej Kudelski
Summary: In this study, a highly ordered InP nanowire surface coated with an Au layer was described as a highly efficient and stable SERS platform. The SERS measurements showed high enhancement factors and good repeatability for the InP@Au SERS platforms.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Dubravko Risovic, Hrvoje Gebavi, Mile Ivanda
Summary: Nanostructured materials play a significant role in applications such as surface-enhanced Raman scattering (SERS) due to their optical properties. The fractal dimension and lacunarity have a profound influence on SERS enhancement. The percolation theory explains the strong enhancement observed at a fractal dimension of approximately 2.54.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Julia Fernandez-Vidal, Ana M. Gomez-Marin, Leanne A. H. Jones, Chih-Han Yen, Tim D. Veal, Vinod R. Dhanak, Chi-Chang Hu, Laurence J. Hardwick
Summary: Au-SnO2 is demonstrated to be a more durable shell-isolated nanoparticle (SHIN) for enhanced Raman spectroscopy (SHINERS), showing long-life Raman enhancement for 3 months and wide pH stability from pH 2-13.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Nanoscience & Nanotechnology
Eirini Myrovali, Kyrillos Papadopoulos, Irene Iglesias, Marina Spasova, Michael Farle, Ulf Wiedwald, Makis Angelakeris
Summary: The study shows that smaller particles form clusters first, then guide chain formation through cluster-cluster interactions, while larger particles readily form chains through particle-particle interactions. In both cases, dipolar interactions between neighboring nanoparticles increase significantly, leading to a substantial enhancement in their collective magnetic features, resulting in an increase in magnetic particle hyperthermia efficiency by up to one order of magnitude.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Shusen Liao, Yunxuan Zhu, Qian Ye, Stephen Sanders, Jiawei Yang, Alessandro Alabastri, Douglas Natelson
Summary: Surface-enhanced Raman spectroscopy (SERS) relies on the local surface plasmon resonances (LSPRs) in metallic nanogaps. By exciting surface plasmon polaritons at nearby gratings and coupling to the local nanogap plasmon modes, SERS can be achieved in electromigrated gold molecular junctions with remote excitation. Compared to direct excitation, remote excitation shows more stable SERS spectra and similar open-circuit photovoltage (OCPV) when the photon count rates are comparable. Statistical analysis reveals a coupling efficiency of around 10% for remote excitation, consistent with simulated energy flow.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Gregory Barbillon, Andrey Ivanov, Andrey K. Sarychev
Summary: The study focuses on maximizing surface-enhanced Raman scattering (SERS) by designing efficient substrates for chemical molecule adsorption. The hybrid asymmetric dimer array on a gold film shows significant enhancement in SERS signal for thiophenol molecules. Understanding the adsorption efficiency and constant K value is crucial for predicting SERS activity and developing sensors for various analytes.
Article
Chemistry, Physical
Mangababu Akkanaboina, Dipanjan Banerjee, Kanaka Ravi Kumar, R. Sai Prasad Goud, Venugopal Rao Soma, S. V. S. Nageswara Rao
Summary: Femtosecond laser-induced periodic surface structures (LIPSS) were achieved on GaAs by ablating in the air with variable input pulse energy. The morphology of these GaAs-LIPSS was analyzed and their formation mechanisms were discussed with theoretical support. These GaAs-LIPSS exhibited uniform periodicity over large ablation areas and were used as substrates for surface-enhanced Raman spectroscopy (SERS) with excellent performance.
SURFACES AND INTERFACES
(2023)
Article
Biochemistry & Molecular Biology
Maria Jose Lo Faro, Ileana Ielo, Dario Morganti, Antonio Alessio Leonardi, Sabrina Conoci, Barbara Fazio, Giovanna De Luca, Alessia Irrera
Summary: This paper reports on the decoration of ultrathin silicon nanowires with gold nanoparticles for surface-enhanced Raman scattering applications. The results show that the decorated nanowires exhibit high enhancement effects after different surface functionalizations.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Inorganic & Nuclear
Dileep Kumar Yadav, Qiang Zhang, Krzysztof Gofryk, Harikrishnan S. Nair, Sitharaman Uma
Summary: We conducted a comprehensive study on the synthesis, structure, and magnetic properties of honeycomb oxide Na3Mn2SbO6 using neutron diffraction, heat capacity, and magnetization measurements. Our results confirmed a monoclinic structure and demonstrated the coexistence of long-range and short-range magnetic ordering. We also observed a spin-flop transition and identified the fully ordered magnetic ground state of Na3Mn2SbO6 as a Neel antiferromagnetic. These findings highlight the importance of developing new honeycomb oxides.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Justin P. Jahnke, Donghun Kim, Douglas J. Wildemuth, Jordi Nolla, Maxwell W. Berkow, Hosu Gwak, Shany Neyshtadt, Tamar Segal-Peretz, Gitti L. Frey, Bradley F. Chmelka
Summary: Inorganic-organic mesophase materials have tunable properties that are difficult to achieve due to complex synthesis processes. By understanding these processes, mesostructured materials with highly aligned channels and controllable macroscopic orientational order can be prepared, exhibiting novel anisotropic properties for applications in separations, catalysis, and energy conversion.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Haining Li, Bing Yang, Biao Yu, Nan Huang, Lusheng Liu, Jiaqi Lu, Xin Jiang
Summary: Treatment of hydrogen plasma on silicon nanowires, followed by coatings of nanocrystalline diamond and multilayer graphene, enables enhanced Raman signals with reduced fluorescent background. The graphene-coated nanowires show lower fluorescent background than diamond-coated ones, with a minimum detection limit of 10(7) mol/L and an enhancement factor exceeding 10(4). The stable Raman enhancement is attributed to hydrogen-terminated graphene and the nanowire structure, independent of graphene layers and maintaining stability after exposure to the atmosphere for a month.
APPLIED SURFACE SCIENCE
(2021)
Article
Crystallography
Siarhei Zavatski, Anatoli I. I. Popov, Andrey Chemenev, Alma Dauletbekova, Hanna Bandarenka
Summary: In this study, the relationship between the structural parameters of porous silicon (PS) and the morphology of gold nanostructures fabricated on its surface, with a focus on SERS response, is investigated. By coating PS surfaces with gold, large-area plasmonic gold nanostructures are fabricated, suitable for a wide range of plasmonic applications.
Article
Biophysics
Olga Guselnikova, Hyunsoo Lim, Jongbeom Na, Miharu Eguchi, Hyun-Jong Kim, Roman Elashnikov, Pavel Postnikov, Vaclav Svorcik, Oleg Semyonov, Elena Miliutina, Oleksiy Lyutakov, Yusuke Yamauchi
Summary: A new family of hierarchical porous hybrid materials was introduced for ultrasensitive and selective sensing of enantiomeric drugs in complex biosamples using chiral surface-enhanced Raman spectroscopy (SERS). The hybrid hierarchical porous substrates showed extremely low limit of detection for pseudoephedrine in undiluted blood plasma, with dual enhancement mechanisms and chemical recognition. The combination of mesoporous Au and microporous AlaZnCl (HMOF) led to significant improvements in SERS signals for sensing applications.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Xiaojun Luo, Jingtian Zhu, Wenyu Jia, Ningning Fang, Ping Wu, Chenxin Cai, Jun-jie Zhu
Summary: This study presents a novel LR-SERS substrate capable of detecting samples from a distance and providing a high SERS enhancement effect. Through simulation and experimental validation, the LR-SERS substrate can be used to detect miRNA let-7a using the HCR strategy, with an extremely low detection limit.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Spectroscopy
Flavia C. Marques, Gustavo C. Azevedo, Carlos A. Senna, Braulio S. Archanjo, Charlane C. Correa, Renato C. Matos, Diego Pereira dos Santos, Gustavo F. S. Andrade
Summary: The preparation of metal core@shell hybrid materials shows promise for SERS and SEF applications. Fine control over the thickness of the covering layer is essential. Thicker oxide layers enhance the SEF effect, while thinner oxide layers enhance the SERS effect.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Correction
Chemistry, Physical
Anja Muller, Thomas Heinrich, Sven Tougaard, Wolfgang S. M. Werner, Martin Hronek, Valentin Kunz, Jorg Radnik, Jorg M. Stockmann, Vasile-Dan Hodoroaba, Sigrid Benemann, Nithiya Nirmalananthan-Budau, Daniel Geissler, Katia Sparnacci, Wolfgang E. S. Unger
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Nanoscience & Nanotechnology
Ugo Stella, Thierry Grosjean, Natascia De Leo, Luca Boarino, Peter Munzert, Joseph R. Lakowicz, Emiliano Descrovi
Article
Nanoscience & Nanotechnology
G. Milano, L. D'Ortenzi, K. Bejtka, B. Ciubini, S. Porro, L. Boarino, C. Ricciardi
Summary: This work investigates the metal-insulator transition and electronic transport properties of ZnO nanowires synthesized by Chemical Vapor Deposition. It reveals a thermally activated conduction mechanism with two channels and the tunability of the electrical properties from semiconductor to metallic-like behavior with temperature. The unique electronic transport properties are influenced by native defects, Coulomb interactions, and surface states affected by adsorbed species.
Article
Materials Science, Multidisciplinary
Irdi Murataj, Marwan Channab, Eleonora Cara, Candido F. Pirri, Luca Boarino, Angelo Angelini, Federico Ferrarese Lupi
Summary: Hyperbolic metamaterials offer unconventional properties in optics, enabling light confinement and propagation at the nanoscale. A method based on block copolymer blend instability is introduced to create localized HMMs with in-plane optical axis. The hierarchical nanostructures generated from the dewetting of block copolymer thin film provide a platform for subsequent pattern transfer into a Au/air HMM, exhibiting hyperbolic behavior in the visible spectrum.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Muhammad Waqas Rabbani, Valentina Bonino, Luca Spessa, Angelo Agostino, Natascia De Leo, Carmelo Prestipino, Marco Truccato
Summary: The study found that X-ray nanobeam irradiation induces changes in the structure of high-Tc superconductor single crystals, including an increase in Mosaicity spread and release of mechanical stress. Analysis of electrical properties revealed significant underdoping effects and an exponential increase in normal-state resistivity with irradiation dose.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Nanoscience & Nanotechnology
S. Javad Rezvani, Luc Favre, Gabriele Giuli, Yiming Wubulikasimu, Isabelle Berbezier, Augusto Marcelli, Luca Boarino, Nicola Pinto
Summary: Experimental evidence shows that a spontaneous shape transition occurs during high-temperature annealing of a thin Mn wetting layer evaporated on Ge(111), resulting in the formation of uniform width nanowires with homogeneous composition. The elongation process of the nanostructures is driven by strain and can be controlled by tuning the annealing process, allowing for the design and fabrication of novel nanodevices utilizing the room-temperature ferromagnetic properties of the Mn-Ge alloy.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2021)
Review
Chemistry, Multidisciplinary
Eleonora Cara, Irdi Murataj, Gianluca Milano, Natascia De Leo, Luca Boarino, Federico Ferrarese Lupi
Summary: This review highlights the latest advances in nanostructured inorganic materials synthesized through the infiltration of self-assembled block copolymers (BCPs), showcasing the comprehensive description of the chemical and physical characterization techniques used for in situ studies and ex situ measurements of resulting properties. Additionally, the emerging optical and electrical properties of such materials are discussed.
Article
Engineering, Electrical & Electronic
G. Milano, L. Boarino, I Valov, C. Ricciardi
Summary: This research reports on the fabrication and characterization of memristive devices based on ZnO nanowires. Single crystalline ZnO nanowires were synthesized by a bottom-up approach and were utilized to create electrochemical metallization memory cells. These single crystalline devices not only serve as building blocks for nanowire-based memristive and neuromorphic systems, but also provide a model system for studying the physicochemical processes underlying memristive functionalities.
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Gianluca Milano, Masakazu Aono, Luca Boarino, Umberto Celano, Tsuyoshi Hasegawa, Michael Kozicki, Sayani Majumdar, Mariela Menghini, Enrique Miranda, Carlo Ricciardi, Stefan Tappertzhofen, Kazuya Terabe, Ilia Valov
Summary: This article presents a comprehensive review of memristive quantum devices, where quantum conductance effects can be observed through the coupling of ionics with electronics. It introduces the underlying resistive switching mechanism, electrochemical and physicochemical phenomena, and electronic ballistic conduction transport in nanofilaments. The article analyzes various quantum conductance effects, including quantum mode splitting, stability, and random telegraph noise, and discusses the experimental techniques and challenges for characterizing memristive phenomena at the nanoscale. Finally, it envisions potential applications and future perspectives, highlighting the significance of controllable atomic-sized conductive filaments in integrated quantum systems operating at room temperature.
ADVANCED MATERIALS
(2022)
Review
Polymer Science
Irdi Murataj, Eleonora Cara, Nicoletta Baglieri, Candido Fabrizio Pirri, Natascia De Leo, Federico Ferrarese Lupi
Summary: Novel materials with defined compositions and structures at the nanoscale are in high demand in various research fields. This review discusses the development of new synthesis approaches, such as the combination of self-assembling materials like block copolymers and liquid phase infiltration processes, to achieve control over material properties and functionalities. The review provides insights into the mechanism of liquid phase infiltration and highlights its role in the synthesis of complex and functional inorganic materials. Additionally, the review showcases the implementation of liquid phase infiltration in applications such as photonics, plasmonics, and electronics.
Article
Materials Science, Multidisciplinary
Eleonora Cara, Philipp Hoenicke, Yves Kayser, Joerg K. N. Lindner, Micaela Castellino, Irdi Murataj, Samuele Porro, Angelo Angelini, Natascia De Leo, Candido Fabrizio Pirri, Burkhard Beckhoff, Luca Boarino, Federico Ferrarese Lupi
Summary: This study characterized the sequential infiltration synthesis process and validated the results using nondestructive methods such as X-ray fluorescence, X-ray photoelectron spectroscopy, and scanning transmission electron microscopy.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Physical
Davide Marchi, Eleonora Cara, Federico Ferrarese Lupi, Philipp Honicke, Yves Kayser, Burkhard Beckhof, Micaela Castellino, Petr Klapetek, Alberto Zoccante, Michele Laus, Maurizio Cossi
Summary: The maximum monolayer density of self-assembled monolayers (SAM) of 7-mercapto-4-methylcoumarin (MMC) on a flat gold surface was determined using molecular dynamics simulations and experimental techniques. The nature of the molecule/surface interface was investigated by analyzing the protonation state of the sulfur atom upon adsorption.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
