Article
Chemistry, Analytical
Xia Li, Bingxin Liu, Liqi Liu, Hui Yuan, Yanli Li, Bingqian Zhou, Jiuming Sun, Chenzhong Li, Qingwang Xue
Summary: This study demonstrates a facile large-scale assembly strategy of geometrically diverse metal nanoparticles for constructing three-dimensional plasmonic nanostructures resembling signal towers. These structures hold promise for improving SERS performance and can be used for diagnosing and estimating related diseases in complex fluids.
Article
Chemistry, Multidisciplinary
Nicolas Marro, Rongtian Suo, Aaron B. Naden, Euan R. Kay
Summary: The future of materials chemistry lies in precisely arranging components with larger dimensions and more complex compositions. Dynamic covalent nanoparticles are emerging as attractive nanosized building blocks that allow for controlled assembly and composition. By understanding the underlying molecular events and using kinetic models, selectivity and composition of the materials can be optimized.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Matilde Cirignano, Sergio Fiorito, Matteo Barelli, Vincenzo Aglieri, Manuela De Franco, Houman Bahmani Jalali, Andrea Toma, Francesco Di Stasio
Summary: Advances in surface chemistry of CsPbX3 nanocrystals have enabled ligand exchange in solution. However, there are limited reports on ligand exchange in CsPbX3 thin films. In this study, the authors demonstrate a layer-by-layer assembly method that allows for precise control of the film thickness. The ligand exchange is carried out in the solid state using a spin-coating technique, resulting in improved photoluminescence quantum yield of the film. This technique has the potential for application in various perovskite nanomaterials.
Article
Chemistry, Multidisciplinary
Arlin Rodriguez, Dhanush Gandavadi, Johnsi Mathivanan, Tingjie Song, Bharath Raj Madhanagopal, Hannah Talbot, Jia Sheng, Xing Wang, Arun Richard Chandrasekaran
Summary: The programmable nature of DNA allows the construction of custom-designed static and dynamic nanostructures. However, the high concentrations of magnesium ions required for assembly restrict their applications. In this study, we investigate the assembly of DNA nanostructures in various ions and successfully assemble a majority of these structures in Ca2+, Ba2+, Na+, K+ and Li+. We also find that structures assembled in monovalent ions exhibit significantly higher nuclease resistance compared to those assembled in divalent ions.
Article
Chemistry, Multidisciplinary
Hai Huang, Jie Li, Mengge Yuan, Haowei Yang, Yu Zhao, Yulong Ying, Sheng Wang
Summary: This study presents a universal and straightforward strategy to efficiently self-assemble MOF NPs into robust MOFtors for enhanced organic- or heavy-metal-ion-contaminants remediation, without mechanical stirring. The Fe-UiOSomes-Pt micromotors exhibited excellent motility and efficiency in removing dyes and heavy metal ions, showcasing great potential for environmental cleanup.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Chaolumen Wu, Qingsong Fan, Zhiwei Li, Zuyang Ye, Yadong Yin
Summary: This study demonstrates reversible assembly and active tuning of plasmonic chiral superstructures by introducing a chiral magnetic field. Manipulating the magnetic field controls both the chiral arrangement and spectral properties of the superstructures, enabling fast and reversible tunability.
MATERIALS HORIZONS
(2023)
Article
Nanoscience & Nanotechnology
Wang Hee Lee, Chan Woo Lee, Gi Doo Cha, Byoung-Hoon Lee, Jae Hwan Jeong, Hyunseo Park, Junhyeok Heo, Megalamane S. Bootharaju, Sung-Hyuk Sunwoo, Jeong Hyun Kim, Kyung Hyun Ahn, Dae-Hyeong Kim, Taeghwan Hyeon
Summary: A floatable photocatalytic platform consisting of porous elastomer-hydrogel nanocomposites is designed to address the challenges of solar energy and mass transfer, catalyst instability, and reverse reactions. It achieves efficient hydrogen evolution and demonstrates potential for commercialization in seawater and highly turbid water.
NATURE NANOTECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Egor Khaidarov, Damien Eschimese, Keng Heng Lai, Aihong Huang, Yuan Hsing Fu, Qunying Lin, Ramon Paniagua-Dominguez, Arseniy Kuznetsov
Summary: Nanostructures called nanoantennas show potential for color printing and filtering with sub-wavelength resolution. This study evaluates the color quality produced by large size nanoantenna arrays fabricated on a 12-inch wafer. The results indicate that a vivid and vibrant color palette, almost fully covering the sRGB color space, can be obtained using this mass-manufacturing-ready fabrication process. The findings provide a solid foundation for the potential industrial adoption of this emerging technology and reveal the limits and challenges of the process.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Yuhang Dong, Feng Li, Zhaoyue Lv, Shuai Li, Meihe Yuan, Nachuan Song, Jinqiao Liu, Dayong Yang
Summary: Coupling materials chemistry systems with biological processes to modulate lysosomal functions provides a promising approach for lysosome interference. This study demonstrates a new way to achieve lysosome interference by coupling subcellular microenvironment with a precisely programmable assembly system.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Chongyang Wu, Hongyue Zhang, Nan Kong, Bihan Wu, Xinhui Lin, Huaimin Wang
Summary: Chirality correction, asymmetry, ring-chain tautomerism, and hierarchical assemblies are fundamental phenomena in nature that affect the functions of proteins and other supermolecules. A designed alternating D,L peptide was used to recreate and validate the chirality inversion prior to cyclization. The resulting asymmetrical cyclic peptide with a 4-imidazolidinone ring provides a platform to study tautomerism, thermostability, and assembly of nanostructures.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Tathagata Mondal, Maria Nerantzaki, Kevin Flesch, Capucine Loth, Mounir Maaloum, Yidan Cong, Sergei S. Sheiko, Jean-Francois Lutz
Summary: The DNA-guided assembly of biohybrid sequence-defined poly(phosphodiester)s was investigated, resulting in the synthesis of linear or star-like superstructures. Characterization through electrophoresis, UV spectroscopy, and atomic force microscopy confirmed the formation of the expected supramolecules, despite some defects. This approach offers interesting avenues for designing 2D and 3D constructs based on informational poly(phosphodiester)s.
Article
Acoustics
Jixing Cao, Fanfu Bu, Jianze Wang, Chao Bao, Weiwei Chen, Kaoshan Dai
Summary: This study presents an optimal sensor placement approach for reconstructing full-field dynamic responses. The combination of reduced-order model with sparse promotion enhances the effectiveness of the sensor optimization algorithm. Pivoted QR decomposition is used to accelerate the full-field reconstruction of large-scale structures. The proposed method is accurate and reliable, providing a potential alternative for structural health monitoring of large-scale structures.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Chemistry, Multidisciplinary
Xinyu Liu, Lianyu Zheng, Yiwei Wang, Weiwei Yang, Binbin Wang, Bo Liu
Summary: This paper proposes an assembly error model considering the space environment and a tolerance dynamic allocation method based on as-built data to improve satellite service performance. The results show that the proposed method can improve pointing accuracy and reduce assembly cost.
APPLIED SCIENCES-BASEL
(2023)
Article
Nanoscience & Nanotechnology
Guangyu Qiu, Ying Du, Yujia Guo, Yingchao Meng, Zhibo Gai, Ming Zhang, Jing Wang, Andrew deMello
Summary: This article analyzes the motion mechanism of nano-objects in near-field optics using finite element method, particularly focusing on the impact of localized surface plasmon resonance (LSPR) on manipulation. The study confirms the capability of LSPR with AUNI interface to manipulate nano-objects, and demonstrates the trapping ability of local plasmonic near-field for dielectric polystyrene beads smaller than 200nm and biological nanovesicles.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Aerospace
Weiya Zhou, Shunan Wu, Jinzhao Yang, Chuang Liu
Summary: This paper investigates the dynamic modeling problem of large-scale space structures during on-orbit assembly and proposes a modular modeling approach. By establishing dynamic models for each substructure and designing a database to store these models, the dynamic modeling of the entire assembly process can be gradually completed.
INTERNATIONAL JOURNAL OF AEROSPACE ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Sandeep Cherumukkil, Gourab Das, Ravi P. N. Tripathi, G. V. Pavan Kumar, Sunil Varughese, Ayyappanpillai Ajayaghosh
Summary: Bodipy-PE-2 self-assembly forms a layered photonic structure upon thermal annealing, exhibiting angle-dependent iridescence of green and pink with a luminescence shift from yellow to red. The properties are attributed to the micro- and nano-periodicity associated with the layered structure and the phase transformation due to annealing. The material shows active and passive waveguiding properties when excited with 532 and 633 nm laser sources.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
Angelos Xomalis, Xuezhi Zheng, Rohit Chikkaraddy, Zsuzsanna Koczor-Benda, Ermanno Miele, Edina Rosta, Guy A. E. Vandenbosch, Alejandro Martinez, Jeremy J. Baumberg
Summary: Optomechanical interactions enable coherent interconversion of signals between optical and mechanical domains. Extreme light-matter coupling at nanoscale mode volumes allows single mid-infrared (MIR) photon sensitivity. This study demonstrates frequency upconversion by utilizing infrared absorption and Raman activity of molecular vibrations in plasmonic nanocavities, showing potential for low-cost and large-scale infrared detectors and spectroscopic techniques.
Article
Multidisciplinary Sciences
Jack Griffiths, Tamas Foldes, Bart de Nijs, Rohit Chikkaraddy, Demelza Wright, William M. Deacon, Denes Berta, Charlie Readman, David-Benjamin Grys, Edina Rosta, Jeremy J. Baumberg
Summary: The study reconstructs sub-angstrom relative movements of a molecule interacting with a metal adatom using vibrational spectrum measurements in a self-assembled monolayer, showcasing the potential of tracking complex chemistries at the atomic scale.
NATURE COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Ravi P. N. Tripathi, Xiaodong Yang, Jie Gao
Summary: This study investigates the polarization-dependent linear and nonlinear optical responses in mechanically exfoliated teallite crystals, showing their anisotropic structural and optical properties. The results are expected to enhance the understanding of light-matter interactions in complex multi-element layered materials.
SCIENTIFIC REPORTS
(2021)
Article
Optics
Rohit Chikkaraddy, Angelos Xomalis, Lukas A. Jakob, Jeremy J. Baumberg
Summary: Recent advancements in surface-enhanced Raman scattering (SERS) have allowed real-time observation of single-bond vibrations at room temperature, surpassing the slow detection limitations of mid-infrared (MIR) vibrational spectroscopy. A new method using SERS for MIR sensing has been developed, utilizing nanoparticle-on-foil (NPoF) nanocavities to modulate molecular SERS signals in the presence of MIR photons. Observations indicate that phonon resonances of SiO2 can trap intense MIR surface plasmons, offering new possibilities for optomechanics and detection limits down to single-photon and single-molecule regimes.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Optics
Ravi P. N. Tripathi, Xiaodong Yang, Jie Gao
Summary: This study reports the anisotropic third-harmonic generation (THG) response of mechanically exfoliated As2S3 thin flakes. The polarization-dependent evolution of THG emission from butterfly-shaped pattern to four-lobe pattern is comprehensively explored. The third-order nonlinear susceptibility of As2S3 crystal is extracted by analyzing the thickness-dependent THG emission.
Article
Optics
Ravi P. N. Tripathi, Jie Gao, Xiaodong Yang
Summary: Naturally occurring layered mineral livingstonite is identified as a new type of van der Waals (vdW) heterostructure based 2D material with strong anisotropic vibrational and optical responses. The crystal exhibits anomalous linear dichroism (LD) transition effect and butterfly-shaped third-harmonic generation (THG) emission pattern. This research provides insights into the application of livingstonite as a novel vdW heterostructure 2D material.
Correction
Optics
Rohit Chikkaraddy, Angelos Xomalis, Lukas A. Jakob, Jeremy J. Baumberg
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Optics
Rakesh Arul, David-Benjamin Grys, Rohit Chikkaraddy, Niclas S. Mueller, Angelos Xomalis, Ermanno Miele, Tijmen G. Euser, Jeremy J. Baumberg
Summary: This study demonstrates a self-assembled gold nanoparticle multilayer that supports tunable collective plasmon-polariton resonances in the visible and infrared spectrum. The structure exhibits high stability and efficient light coupling, making it suitable for nanoscale Raman and infrared sensing applications.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Xiu Yang, Shanshan Huang, Rohit Chikkaraddy, Eric S. A. Goerlitzer, Feiliang Chen, Jinglei Du, Nicolas Vogel, Thomas Weiss, Jeremy J. Baumberg, Yidong Hou
Summary: Low-cost and large-area chiral metamaterials (CMs) are highly desired for practical applications. In this study, a uniform large-area colloidal particle array was fabricated by interface-mediated self-assembly, and the handedness of chiral plasmonic shells (CPSs) was precisely controlled using glancing angle deposition (GLAD). The CPSs showed strong chiroptical signals and excellent sensor performance in detecting chiral molecules due to the formation of uniform superchiral fields.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Multidisciplinary Sciences
Alexander Y. Hwang, Rohit Chikkaraddy, David -Benjamin Grys, Oren A. Scherman, Jeremy J. Baumberg, Bart de Nijs
Summary: Nanoconfined few-molecule water clusters are important systems for studying hydrogen bonding, but most experiments are limited to cryogenic temperatures. This study shows that combining Raman spectroscopy with the molecular nanocapsule cucurbituril allows for the sequestration and analysis of water clusters at ambient conditions. The technique provides high-resolution vibrational spectra and can track specific isotopic exchanges inside the water clusters.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Nanoscience & Nanotechnology
Rohit Chikkaraddy, Junyang Huang, Dean Kos, Eoin Elliott, Marlous Kamp, Chenyang Guo, Jeremy J. Baumberg, Bart de Nijs
Summary: Plasmonic nanoantennas can focus light at nanometer length scales, resulting in intense field enhancements. The tightest optical confinements achieved in plasmonic gaps depend on the gap spacing, refractive index, and facet width, making antenna shape tuning challenging. However, by controlling the surrounding refractive index, efficient frequency tuning and enhanced in-/output coupling can be achieved through retardation matching, enabling dark modes to become optically active and improving various functionalities.
Article
Chemistry, Multidisciplinary
Sara Rocchetti, Alexander Ohmann, Rohit Chikkaraddy, Gyeongwon Kang, Ulrich F. Keyser, Jeremy J. Baumberg
Summary: Developing highly enhanced plasmonic nanocavities allows direct observation of light-matter interactions at the nanoscale. With DNA origami, precise nanopositioning of single-quantum emitters in ultranarrow plasmonic gaps enables detailed study of their modified light emission. By developing nanoparticle-on-mirror constructs with DNA nanostructures as reliable and customizable spacers for nanoparticle binding, it is revealed that the traditional understanding of Purcell-enhanced molecular dye emission is misleading, and the enhanced dipolar dye polarizability greatly amplifies optical forces acting on the facet Au atoms, causing their rapid destabilization. Different dyes exhibit emission spectra dominated by inelastic (Raman) scattering rather than fluorescence, challenging the conventional theories in the field of quantum optics using plasmonics.
Article
Optics
Rohit Chikkaraddy, Rakesh Arul, Lukas A. Jakob, Jeremy J. Baumberg
Summary: This study proposes a method for detecting molecular vibrations in the mid-infrared range at room temperature. By assembling molecules into a plasmonic nanocavity resonant at both mid-infrared and visible wavelengths, and optically pumping them below the electronic absorption band, successful conversion of mid-infrared light and observation of enhanced visible luminescence were achieved.
Article
Chemistry, Multidisciplinary
Bibek S. S. Dhami, Vasudevan Iyer, Aniket Pant, Ravi P. N. Tripathi, Ethan J. J. Taylor, Benjamin J. J. Lawrie, Kannatassen Appavoo
Summary: Coupling between light and matter is influenced by the polarization of the electromagnetic field and the nature of excitations in a material. Hybrid perovskites are seen as a promising material for light-based technologies, but understanding how the microstructure affects the intrinsic properties of photon emission is crucial. This study used angle-resolved cathodoluminescence microscopy to examine the polarization state of photons emitted from large-grain hybrid perovskite films, revealing the impact of grain boundaries on polarization and emission angle. This research is important for the development of perovskite-based flat optics where the effects of grain boundaries and interfaces need to be minimized.