Article
Chemistry, Multidisciplinary
Thanos Ioannidis, Tatjana Gric, Edik Rafailov
Summary: Metamaterials are a novel type of artificial media with unique physical properties compared to traditional substances, paving the way for potential applications in functional engineering. Acoustic metamaterials and plasmonic structures exhibit exceptional features that can be controlled through engineering, allowing for the manipulation of wave propagation. Research shows that modifying the geometry of inclusions in metamaterials can significantly alter the properties of the system.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Multidisciplinary
Gyeong-Su Park, Kyung Suk Min, Hyuksang Kwon, Sangwoon Yoon, Sangwon Park, Ji-Hwan Kwon, Sangmin Lee, Jaeyeon Jo, Miyoung Kim, Seong Keun Kim
Summary: Research using high spatial- and spectral-resolution mapping of LSPR modes and nanoscale strain mapping investigates the distribution of LSPR modes and the effect of defect-induced strains on properties.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Liwei Zhang, Peng Zhang, Rongrong Wu, Aoze Han, Kai Cheng, Zengkai Wang, Juan Yang, Shuai Hou, Yi Tong, Mingdong Dong, Lei Liu
Summary: Peptide assemblies, as significant units in biological systems, have been found to play a key role in various activities such as charge transportation and metal ion reduction. In this study, the band gap of hIAPP20-29 was determined to be 2.5 eV by theoretical simulations, and peptides were shown to self-assemble into amyloid fibrils. Experimental evidence confirmed the charge transport along the surface of amyloid fibrils. The electroactive features of peptides, combined with their ability to bind gold precursor and transfer electrons, facilitated the reduction of gold ions to single-crystalline gold nanoplates. These Au-fibril hybrids showed good performance as catalysts in the reduction of 4-nitrophenol. The findings suggest that amyloid fibrils with charge transportation abilities inspired by the bio-system can be used to manufacture peptide-metal nanomaterials in a green and precise manner for catalytic applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Ruoqi Ai, Christina Boukouvala, George Lewis, Hao Wang, Han Zhang, Yunhe Lai, He Huang, Emilie Ringe, Lei Shao, Jianfang Wang
Summary: A simple method for reshaping immobilized Au nanoplates through plasma treatment is demonstrated, resulting in the formation of nearly periodic right pyramid arrays on the surface. The gaseous environment in the plasma-treatment system, specifically nitrogen-containing environments, plays a significant role in the reshaping process. The reshaped Au nanoplates exhibit enhanced optical properties, including higher refractive index sensitivities and increased surface-enhanced Raman scattering intensities.
Article
Chemistry, Physical
Martin A. Mosquera, Juan M. Marmolejo-Tejada, Nicholas J. Borys
Summary: In this study, the coupling between plasmonic excitations of metallic interfaces and nanostructures and electronic excitations in semiconductors was investigated using quantum modeling. New polariton states were identified, which could have significant implications for optoelectronic technologies.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Optics
Feifei Liu, Dongyi Wang, Han Zhu, Xiyue Zhang, Tong Liu, Shulin Sun, Xinping Zhang, Qiong He, Lei Zhou
Summary: A generic approach for designing plasmonic lenses to generate predesigned vector surface plasmon polaritons (SPPs) vortices with high efficiencies is established. The devices, constructed with tailored meta-atoms, can convert normally incident circularly polarized light into desired vector SPP vortices due to phase and polarization matching. Experimental demonstrations of directional SPP conversion (coupling efficiency: 35%; utilization efficiency: 98%) and enhanced efficiency in generating vector SPP vortex pave the way for on-chip plasmonic devices to efficiently utilize SPPs with minimal footprints.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Li Wang, Jinlai Liu, Bin Ren, Ying Cui, Jie Song, Yongyuan Jiang
Summary: The paper demonstrates narrowband refractive index sensing in a distributed Bragg reflector structure with hexagonal boron nitride, showing sensitivity and narrowband properties affected by different factors. By adjusting analyte thickness and optimizing it, high sensitivity and FOM can be achieved, allowing for detection of various analyte categories.
Article
Materials Science, Multidisciplinary
Lei Qiu, Xiaofang Lai, Jikang Jian
Summary: The study demonstrates the substrate-independent growth of single-crystal SnSe nanoplates with a square-like shape using physical vapor deposition. The nanoplates are well-crystallized and exhibit a near-infrared optical band gap, suggesting potential applications in optoelectronic devices.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Multidisciplinary
Jie Wang, Min Wu, Weili Zhen, Tian Li, Yun Li, Xiangde Zhu, Wei Ning, Mingliang Tian
Summary: Superconductivity with an unusual filamented character below 2 K has been observed in bulk ZrTe3 crystals, but not in its nanostructures. In this study, superconducting behavior was found in controllable chemical vapor transport synthesized ZrTe3-x nanoplates, with a critical temperature (Tc) of 3.4 K. The suppression of charge density wave (CDW) due to Te vacancies was identified as the mechanism for the observed superconductivity. Additionally, the superconductivity in the nanoplates exhibited large anisotropy and two-dimensional character.
NANOSCALE ADVANCES
(2023)
Article
Optics
Bin Sun, Feifeng Xie, Yu Luo, Shuai Kang, Jianqiang Liu
Summary: A hybrid system based on graphene/metal electrodes was successfully used to efficiently excite and control plasmonic modes in graphene ribbons, leading to the design of a low-voltage controlled multi-band absorber. This structure has potential applications in integrated photonics compatible with electronic technology, offering a wide range of potential uses.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Lam Yen Thi Nguyen, Yu-Fang Chang, Yang-En Tseng, Hao-Ming Chang, Chia-Chen Hsu, Jiunn-Yuan Lin, Hung-Chih Kan
Summary: In this study, dielectric Fresnel phase zone pad (FPZP) structures were proposed and demonstrated for focusing surface plasmon polaritons (SPPs) at the SiO2/Ag interfaces. The SPP focusing was characterized using up-conversion fluorescence microscopy. The results showed that the optimized FPZP structures enhanced the peak intensity and reduced the spot size of the SPP focal spot.
Article
Chemistry, Physical
Trevor B. Demille, Robert D. Neal, Arin S. Preston, Zijuan Liang, Allen G. Oliver, Robert A. Hughes, Svetlana Neretina
Summary: This study demonstrates a novel liquid-phase seed-mediated synthesis method for fabricating arrays of gold nanoplates directly on substrate surfaces with high precision in position and orientation, resulting in highly faceted structures with a plasmonic response. The technique advances the integration of single-crystal nanomaterials with wafer-based technologies and provides leading-edge capabilities in defining large-area arrays of plasmonic structures.
Article
Chemistry, Multidisciplinary
Xiao-Jing Liu, Yun-Kun Wu, Xiao-Zhuo Qi, Liu Lu, Ming Li, Chang-Ling Zou, Shang-Yu Ren, Guo-Ping Guo, Guang-Can Guo, Wenguang Zhu, Xi-Feng Ren
Summary: In this work, a hybrid plasmonic probe is used to modulate the radiation properties of single photon emitters (SPEs). The experimental results are highly consistent with simulations and theory, providing an efficient approach for optimizing the performance of SPEs.
Article
Optics
Jie Xu, Sanshui Xiao, Panpan He, Yazhou Wang, Yun Shen, Lujun Hong, Yamei Luo, Bing He
Summary: This paper investigates the characteristics of unidirectionally propagating wave (UPW) and constructs ultra-broadband one-way waveguides using metamaterials and perfect magnetic conductor boundaries. A gradient-index metamaterial is proposed for broadband truly rainbow trapping. The research findings are of great importance for broadband terahertz communication, energy harvesting, and strong-field devices.
Article
Optics
Yuqing Cheng, Mengtao Sun
Summary: This study solves Maxwell's Equations to obtain the properties of PSPP and LSPR supported in Ag nanowire and Au nanorod, analyzing the propagation length and transmitted spectra, and unifying the two phenomena by finding they result from the same mechanism. The work provides an alternative way to describe SPP modes and is helpful for applications using SPP.
OPTICS COMMUNICATIONS
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Yuanyuan Ma, Jingfang Mao, Xinguo Liu, Zhongying Dai, Hui Zhang, Xinyang Zhang, Qiang Li
Summary: This study explored a deep learning-based framework to segment iGTV rapidly and accurately in 4D CT images for lung cancers. The results showed that the proposed networks with multi-channel multi-path and convolutional GRU improved the segmentation accuracy but reduced the segmentation efficiency. Different fusion strategies also had different effects on similarity and distance metrics.
Article
Optics
Zixuan Du, Rujun Zhou, Si Luo, Ding Zhao, Wei Long, Qiang Ling, Zhangwei Yu, Daru Chen
Summary: In this paper, a dynamically tunable graphene metasurface is proposed for multi-band refractive index sensing and four-state optical switching. The design exhibits dual-channel resonance modes and achieves ultrahigh sensitivity for refractive index sensing in the mid-infrared and far-infrared bands. A reflective optical switch with dual-layer graphene disks is numerically demonstrated, achieving a four-state optical switch with a cut-off absorptivity of over 98%. The concise structures are highly feasible for fabrication and show significant potential in graphene optics and integrated photonic systems.
OPTICS COMMUNICATIONS
(2023)
Correction
Optics
Meiyan Pan, Yifei Fu, Mengjie Zheng, Hao Chen, Yujia Zang, Huigao Duan, Qiang Li, Min Qiu, Yueqiang Hu
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Yihan Lu, Binbin Jin, Rui Zheng, Shan Wu, Ding Zhao, Min Qiu
Summary: In this study, it was discovered that aromatic molecules can be directly converted into nanostructures containing graphene quantum dots (GQDs) using cryogenic electron-beam writing, resulting in even red fluorescence emission. The photoluminescence intensity of the product can be easily controlled by adjusting the electron-beam exposure dose. Experimental analysis revealed a carbonization and graphitization process of the aromatic molecules during e-beam irradiation. This one-step method for production and patterning of GQDs enables their application in highly integrated and compact optoelectronic devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Thermodynamics
Limin Qi, Dongli Liu, Xiao Liu, Haiyue Pei, Ding Zhao, Haishan Cao, Min Qiu
Summary: Thermal management is crucial for electronic devices to remain within their temperature limits. Micromachined Joule-Thomson (JT) coolers, which reduce temperature fluctuations, show promise for achieving this. In this study, the cooling power of a micromachined JT cooler was examined using nitrogen. By applying high and low pressures, the cooler successfully cooled from room temperature to 88.5 K in 30 minutes. The study introduces a general method for evaluating the cooling performance and discusses the relationship between performance and heat load.
APPLIED THERMAL ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Jinyu Guo, Tao Liu, Shuoqiu Tian, Wentao Yuan, Rui Zheng, Shan Wu, Ding Zhao, Yifang Chen, Min Qiu
Summary: This paper presents a new design of metallic cross annular hole array for developing optical filters in the mid-infrared band of 4-10 μm. The effects of structural dimensions on filtering performance were investigated through numerical simulations and optical characterizations. By using a thick Au film and ice lithography, the problem of low spectral resolution was tackled and high performance filters with dense elements in an array were successfully fabricated.
MICROELECTRONIC ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Jianbo Yu, Rui Qin, Yunbin Ying, Min Qiu, Qiang Li
Summary: This study presents a general strategy for achieving asymmetric directional thermal emission in reciprocal systems, and demonstrates its effectiveness experimentally. This has significant implications for the development of ultrathin customized thermal sources and other thermal-engineering applications.
ADVANCED MATERIALS
(2023)
Article
Physics, Applied
Xinggang Shang, Ning Wang, Nanjia Zhou, Min Qiu
Summary: Structural integrity and robustness are key parameters to evaluate microfabrication techniques. Bending and collapsing of 2D/3D microstructures are commonly noted in solvent-involved procedures. Current literature focuses on mechanical one-axis models, but there is an emerging demand for dual-axis models to satisfy rapidly developed micro/nano-engineerings. This paper proposes a dual-axis beam-sway model that considers structure arrangement and solvent influences, and identifies a simplified criterion for judging structural stability. Experimental data verifies the reliability of the model and highlights its importance for the fabrication of delicate structures and optimization of microfabrication processes.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Optics
Yining Zhu, Wenjuan Wang, Yiwei Zhou, Rui Qin, Bing Qin, Tianze Zhou, Min Qiu, Qiang Li
Summary: Personal thermal management is a topic of growing interest due to climate anomalies and the focus on physical health. A colored textile based on woven cloth is developed, which has superior passive radiative heating capability while maintaining aesthetics. By coating infrared transparent inorganic nanoparticles on MXene-decorated cotton, the textile achieves desired color, high near-infrared absorptivity, low mid-infrared emissivity, and wearability. Thermal tests demonstrate significant temperature increases compared to pure cottons, making this textile suitable for energy conservation and multi-spectral camouflage.
LASER & PHOTONICS REVIEWS
(2023)
Article
Energy & Fuels
Anisha Chirumamilla, Fei Ding, Yuanqing Yang, Murugan Senthil Mani Rajan, Sergey I. Bozhevolnyi, Duncan S. Sutherland, Kjeld Pedersen, Manohar Chirumamilla
Summary: In this study, a simple large-area nanofabrication method was proposed to create tungsten nanodisc spectrally-selective emitters with high emissivity and thermal stability. The method showed invariance to changes in polarization and incidence angles. This research is significant in advancing the implementation of photonic/plasmonic thermal emitters in high-temperature stable and efficient thermal energy harvesting systems.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Optics
Yining Zhu, Yiwei Zhou, Bing Qin, Rui Qin, Min Qiu, Qiang Li
Summary: A nanophotonic-based night-time warming strategy is proposed, which passively inhibits thermal radiation of objects while actively harnessing that of atmosphere. By using a photonic-engineered thin film, it achieves significant temperature rise and low heat loss.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Optics
Shi Liping, Geng Jiao, Qiu Min
Summary: This study investigates the formation mechanisms of Laser-Induced Periodic Surface Structures (LIPSS) on metal/silicon films and reveals the influence of scanning direction with respect to laser polarization on the regularity of LIPSS. By optimizing the scanning strategy, high-quality and reproducible periodic nanostructures can be obtained. These findings are significant for addressing the challenges of LIPSS formation and promoting the applications of nanophotonics.
ACTA PHOTONICA SINICA
(2023)
