Article
Optics
Yurong Cao, Xiaoqing Wang, Songlin Yang, Yong Pei, Jiaojiao Zang, Jianguo Wang, Yong-Hong Ye
Summary: We investigated the imaging properties of differently shaped gold (Au), silver (Ag), and chromium (Cr) nanoparticle arrays using BaTiO3 glass (BTG) microsphere-assisted microscopy. The results showed that triangular Ag nanoparticle arrays had higher resolution compared to Au and Cr arrays, and circular Au, Ag, and Cr nanostructures exhibited a gap resolution of approximately λ/7.7. Numerical simulations revealed that a fully immersed BTG microsphere dispersed on the surface of a plasmonic nanostructure sample generated an enhanced electric field, particularly at the microsphere-sample gap, due to the focusing effect of the microsphere and the excitation of localized surface plasmon resonance. The enhanced electric field was significantly stronger in Ag nanostructures than in Au and Cr nanostructures. Additionally, the microsphere collected, amplified, and propagated the enhanced near-field information to the far field, resulting in improved imaging resolution.
Article
Optics
Qiaowen Lin, Hongmei Liu, Yongqiang Kang
Summary: Theoretical analysis is conducted on using microspheres for super-resolution imaging, where a photonic nanojet generated by the microsphere interacts with the sample to convert near-field evanescent waves into far-field propagating waves, allowing for high-frequency spatial information to be extracted. This cost-effective method provides a promising approach for achieving far-field super-resolution imaging, as validated by numerical and experimental results.
OPTICS AND LASERS IN ENGINEERING
(2021)
Review
Chemistry, Multidisciplinary
Wei Li, Gabriele S. Kaminski Schierle, Bingfu Lei, Yingliang Liu, Clemens F. Kaminski
Summary: Super-resolution imaging techniques have become popular for visualizing cellular structures with nanometric resolution. This review focuses on the use of fluorescent nanoparticles (NPs) as bright and photostable probes for super-resolution imaging. The review provides an overview of different super-resolution methods, discusses their demands on the properties of fluorescent NPs, and reviews the features, strengths, and weaknesses of each NP class. The future outlook and opportunities in material science for the development of probes for multiplexed subcellular imaging with nanometric resolution are also discussed.
Article
Optics
Chang Liu, Anpei Ye
Summary: This study reports a new characteristic of microsphere-assisted super-resolution imaging technique for imaging multilayer structure samples. It suggests that a higher relative refractive index between the microsphere and immersion medium leads to greater magnification, and theoretical simulation indicates that a narrower beam waist focused by microsphere results in better resolution in MSI.
Article
Physics, Multidisciplinary
Qin-Fang Shi, Song-Lin Yang, Yu-Rong Cao, Xiao-Qing Wang, Tao Chen, Yong-Hong Ye
Summary: The study used label-free microsphere-assisted microscopy to image low-contrast hexagonally close-packed polystyrene nanoparticle arrays with diameters of 300 and 250 nm. By depositing a 30-nm-thick Ag film on the surface of the nanoparticle arrays, the distinction of nanoparticle diameters was achieved, along with the observation of the Talbot effect in the 300-nm-diameter nanoparticle array. The resolution improvement was proposed to be achieved through the excitation of surface plasmon polaritons on the sample surface and the near-field intensity due to the excited SPPs. This research will promote the applications of microsphere-assisted microscopy in life sciences.
Article
Optics
Chang Liu, Anpei Ye
Summary: The study demonstrates that using high-index microspheres can achieve super-resolution imaging with low-cost and convenience, and proposes combining specific imaging parameters and illumination conditions to obtain optimal imaging effect.
OPTICS COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Matthias Keil, Alexandre Emmanuel Wetzel, Kaiyu Wu, Elena Khomtchenko, Jitka Urbankova, Anja Boisen, Tomas Rindzevicius, Ada-Ioana Bunea, Rafael J. Taboryski
Summary: This paper demonstrates plasmonic color metasurfaces up to 60 cm(2) in size fabricated using deep UV projection lithography with innovative resolution enhancement techniques. By including transparent assist features in the mask layout, critical dimensions like nanopillar or nanohole diameters and types can be tailored. With the capability to write nanostructure arrays in just a few minutes, this approach shows significant improvement compared to conventional methods.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Multidisciplinary
Chaohao Chen, Lei Ding, Baolei Liu, Ziqing Du, Yongtao Liu, Xiangjun Di, Xuchen Shan, Chenxiao Lin, Min Zhang, Xiaoxue Xu, Xiaolan Zhong, Jianfeng Wang, Lingqian Chang, Benjamin Halkon, Xin Chen, Faliang Cheng, Fan Wang
Summary: This study presents a method to enhance the spatial resolution of single-beam super-resolution microscopy by modulating excitation intensity. By exploiting the dynamic optical nonlinearity in upconversion nanoparticles and a weighted finite difference imaging algorithm, higher resolution images than traditional superlinear microscopy can be obtained.
Article
Chemistry, Multidisciplinary
Zhaoshuai Gao, Pei Wu, Lixin Yin, Bin Kang, Hong-Yuan Chen, Jing-Juan Xu
Summary: This study utilized the nonlinear plasmonic scattering response to achieve single-wavelength super-resolution imaging, successfully implementing this method on a custom-built system to achieve higher resolution than traditional methods.
CHEMICAL COMMUNICATIONS
(2021)
Article
Optics
Xihao Zhang, Jing Wang, Simone Lamon, Min Gu, Qiming Zhang
Summary: In this study, selective excitation and suppression of plasmonic scattering in gold nanostars using pulsed laser were demonstrated. Super-resolution optical imaging of gold nanostars with low power inhibition laser beam was achieved, allowing sub-diffraction observations without thermal damage. This expands the possibilities for biological super-resolution optical imaging with plasmonic nanoprobes.
Article
Chemistry, Multidisciplinary
Ming-Ming Chen, Cong-Hui Xu, Wei Zhao, Hong-Yuan Chen, Jing-Juan Xu
Summary: The super-resolution ECLM technique allows for high-resolution imaging of single nanoparticles' catalytic activity, revealing surface characteristics of nanocatalysts. This technology has great potential applications in catalysis, biological imaging, and single-entity analysis.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Analytical
Jun-Hao Wan, Chen Qian, Gang Wu, Xian-Wei Liu
Summary: Label-free imaging of nanoscale targets with intrinsic properties is crucial for unveiling the underlying mechanisms of chemistry, physics, and life science. Plasmonic imaging techniques provide real-time imaging and insights into nanoscale detection and nanocatalysis. In this study, a high-resolution plasmonic imaging method is presented, demonstrating its capability to image various nanomaterials and accurately track the interfacial dynamics of nanoparticles. With the simplicity and capacity for label-free and real-time imaging, this approach serves as a promising platform for characterizing nanomaterials at the single-particle level.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Yan Tan, Jianxing Zhou, Xiaotong Xing, Junren Wang, Jinkun Huang, Huiyu Liu, Jiajie Chen, Mingjie Dong, Qin Xiang, Haifeng Dong, Xueji Zhang
Summary: In this study, the controllable self-assembly of DNA-linked gold nanoparticles (AuNPs) for in vivo biomedical applications was achieved by using programmable DNA tetrahedral structures. Three different sizes of AuNPs (20nm, 10nm, and 5nm) were organized and positioned using this method. The density and arrangement of the satellite AuNPs around the core AuNPs were controlled by tuning the size and amount of DNA tetrahedron functionalized on the core AuNPs, resulting in strong electromagnetic field enhancement. With the conjugation of Raman molecules, strong surface-enhanced Raman scattering photoacoustic imaging signals were generated, allowing for the imaging of microRNA-21 and tumor tissues in vivo. This study provides an efficient strategy for building precision plasmonic superstructures in plasmonic-based bioanalysis and imaging.
ANALYTICAL CHEMISTRY
(2023)
Article
Computer Science, Hardware & Architecture
Seok Bong Yoo, Eung-Joo Lee
Summary: An optimal super-resolution imaging network based on object-adaptive optical point spread function estimation is proposed to address the issue of unknown optical blur in practical optical imaging systems. The network estimates the point spread function by a new object sharpness consistency cost in the dark channel domain and adaptively combines an object image sharpening network with the estimation. The performance of the proposed network is validated through experiments using various quantitative metrics.
IEEE CONSUMER ELECTRONICS MAGAZINE
(2021)
Article
Engineering, Electrical & Electronic
Miranda Parisi, Massimiliano Lucidi, Paolo Visca, Gabriella Cincotti
Summary: This article reviews various super-resolution microscopy techniques utilized by microbiologists to investigate bacterial cell morphology and functions. The achieved resolution is discussed, with a focus on fluorophore selection and other critical imaging requirements. Recent applications are described, which have provided novel insights into bacterial cellular structures. The pivotal role of super-resolution microscopy in addressing antimicrobial resistance is emphasized.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Physical
Tim Hawly, Fabian Streller, Manuel Johnson, Sandra Miguez-Lago, Natalie Hammer, Frank Hampel, Dustin Vivod, Dirk Zahn, Milan Kivala, Robert Branscheid, Erdmann Spiecker, Rainer H. Fink
Summary: The study found that the nature of substituents attached to the polycyclic backbone determines the long-range order, crystallinity, and layer thickness of the 2D-extended films. Compounds with a carbonyl unit at the bridge position serve as a superior building block compared to thioketone-bridged derivatives due to their flat core unit. Furthermore, the nature and length of peripheral substituents impact the orientation of the aromatic core unit within highly crystalline films.
Article
Optics
Kangwen Yang, Jiamei Wu, JianPeng Ao, Qiang Hao, Ming Yan, Kun Huang, Minbiao Ji, Heping Zeng
Summary: We have successfully generated broadband spectrum parabolic pulses through experimental and theoretical studies on core-pumped fiber amplifier and dispersion managed fiber oscillator. By adjusting the cavity dispersion of the oscillator, we have achieved different mode-locking operations without pre-chirping for fiber amplification. The experimental results show that we have obtained high power and wideband parabolic pulses, which can be combined with a frequency-doubled laser for coherent anti-Stokes Raman imaging.
Article
Biochemical Research Methods
Fei Zou, Lili Zhang, Xiang Zou, Jing Huang, Cong Nie, Jianyuan Jiang, Chongyuan Guo, Hongli Wang, Xiaosheng Ma, Minbiao Ji
Summary: In this study, we used nonlinear optical microscopy to reveal the histological features of different types of peridural tissues of the lumbar spine, providing a potential method for tissue differentiation during percutaneous endoscopic lumbar discectomy.
BIOMEDICAL OPTICS EXPRESS
(2022)
Article
Nanoscience & Nanotechnology
Tim Hawly, Manuel Johnson, Andreas Spaeth, Hannah Nickles Jaekel, Mingjian Wu, Erdmann Spiecker, Benjamin Watts, Alexei Nefedov, Rainer H. Fink
Summary: Crystalline organic semiconducting thin films were successfully obtained from a benchmark molecule using different deposition methods. The growth mechanism was found to influence the orientation of the thin films, and the highly preparation-dependent thiophene backbone orientation was determined. The films showed continuous crystalline domains extending into the square millimeter-range under near-equilibrium growth conditions. The unit cell and molecular tilt angle were precisely determined using electron diffraction tomography and near-edge X-ray absorption fine structure linear dichroism.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Lan Peng, Jiang Sun, Jing Huang, Chaoyu Song, Qiankun Wang, Liqian Wang, Hugen Yan, Minbiao Ji, Dapeng Wei, Yunqi Liu, Dacheng Wei
Summary: This study demonstrates the first example of fast growth of 3D COF single crystals using supercritical solvothermal polymerization, which allows for efficient and precise construction of highly crystalline products and results in unique optical properties.
CHEMISTRY OF MATERIALS
(2022)
Article
Optics
Ruijuan Liu, Yudi Ma, Lingjing Ji, Liyang Qiu, Minbiao Ji, Zhensheng Tao, Saijun Wu
Summary: We propose a composite acousto-optical modulation scheme for wide-band, efficient modulation of CW and pulsed lasers. By adjusting the amplitudes and phases of weakly-driven daughter AOMs, diffraction beyond the Bragg condition can be achieved with exceptional efficiencies. High contrast switching of output orders can be achieved by imaging pairs of AOMs with opposite directions of sound-wave propagation, enabling efficient bidirectional routing of a synchronized mode-locked laser.
Article
Multidisciplinary Sciences
Mingjian Wu, Christina Harreiss, Colin Ophus, Manuel Johnson, Rainer H. Fink, Erdmann Spiecker
Summary: This study introduces a method called 4D-SCED, which enables in situ observation of the evolution of organic molecular nanocrystals. The method records high-resolution diffraction patterns with lower dose, and has been successfully applied to the active layer in organic solar cells.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Li Guo, Jing Huang, Yaxin Chen, Bohan Zhang, Minbiao Ji
Summary: In this study, metal-lined hollow-core fiber (MLHCF) was used to improve the sensitivity of stimulated Raman scattering (SRS) in sensing dilute solutions. By extending the light-matter interaction volume, MLHCF showed significant enhancement and suppressed cross-phase modulation (XPM) background at a certain fiber length. The fiber-enhanced SRS (FE-SRS) method has potential in sensitive detection of molecules in solution and gas phases.
Article
Physics, Applied
M. Johnson, T. Hawly, B. Zhao, M. Halik, A. Nefedov, R. Fink
Summary: This study presents an in operando near-edge x-ray absorption fine structure (NEXAFS) investigation on p-type [11-(benzo[b]benzo[4,5]thieno[2,3-d]thiophen-2-yl)dodecyl)] BTBT-based self-assembled monolayer (BTBT-SAM). By using the BTBT-SAM as a 2D-model system, researchers were able to directly observe the active organic semiconductor layer without interference from bulk materials.
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
Jing Huang, Minbiao Ji
Summary: This review paper introduces the principles, technical developments, and applications of stimulated Raman scattering (SRS) microscopy in biological cellular machinery, as well as discussing potential breakthroughs in the future.
JOURNAL OF INNOVATIVE OPTICAL HEALTH SCIENCES
(2023)
Article
Chemistry, Physical
Kaicheng Zhang, Andreas Spaeth, Osbel Almora, Vincent M. Le Corre, Jonas Wortmann, Jiyun Zhang, Zhiqiang Xie, Anastasia Barabash, Maria S. Hammer, Thomas Heumueller, Jie Min, Rainer Fink, Larry Lueer, Ning Li, Christoph J. Brabec
Summary: The introduction of a Lewis base and hydrazinium iodide effectively passivates the bulk and surface of Pb/Sn PSCs, resulting in a significant improvement in power conversion efficiency and stability.
ACS ENERGY LETTERS
(2022)
Article
Oncology
Jianpeng Ao, Xiaoguang Shao, Zhijie Liu, Qiang Liu, Jun Xia, Yongheng Shi, Lin Qi, Jiahua Pan, Minbiao Ji
Summary: This study demonstrates the potential of a deep learning-assisted SRS platform in evaluating the tumor grade of prostate cancer, which could help simplify the diagnostic workflow and provide timely histopathology compatible with FT treatment.
Article
Nanoscience & Nanotechnology
Kirill Gubanov, Manuel Johnson, Melda Akay, Benedikt C. C. Wolz, Dan Shen, Xing Cheng, Silke Christiansen, Rainer H. H. Fink
Summary: Advances in organic materials manufacturing have enabled the creation of electronic devices using solution-processing techniques. This study demonstrates the use of micro-contact for high-quality structured electrodes in top-contact organic field-effect transistors (OFETs) by depositing poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) polymer ink. The optimized solution-processing fabrication of OFETs shows promising potential for simple and cost-effective roll-to-roll manufacturing processes, with comparable electrical performance to transistors with gold electrodes and lower contact resistance (R-c) due to carbon-based organic electrodes.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Qing Wu, Karolina Soppa, Elisabeth Mueller, Julian Mueller, Michal Odstrcil, Esther Hsiao Rho Tsai, Andreas Spaeth, Mirko Holler, Manuel Guizar-Sicairos, Benjamin Butz, Rainer H. Fink, Benjamin Watts
Summary: Using PXCT, we have investigated Zwischgold samples from medieval artworks and modern materials, revealing a decrease in density, an increase in corrosion products, and delamination between the leaf and its substrate.
Article
Engineering, Multidisciplinary
Abdullah F. Al-Aboosi, Rainer Fink
Summary: This study aims to design and implement a new wearable device that detects and monitors tremors caused by hypoglycemia, reducing the risk of nocturnal hypoglycemic events. The device sends signals to a phone application via Bluetooth, which can activate an alarm system and notify contacts.
