Article
Chemistry, Multidisciplinary
Javier Fonseca, Lingxin Meng, Pedro Moronta, Inhar Imaz, Cefe Lopez, Daniel Maspoch
Summary: Controlling the size of COF particles allows for the fabrication of porous photonic crystals (PhCs) with a face-centered cubic arrangement. By adsorbing species within the pores of COF particles, the Bragg reflection can be altered, allowing for the modulation of the structure and properties of the PhCs. Given the abundance of existing COFs and their diverse properties, this discovery is expected to enable the development of colloidal PhCs with unprecedented functionality.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Yu-Wei Sun, Zhan-Wei Li, Zi-Qin Chen, You-Liang Zhu, Zhao-Yan Sun
Summary: A new strategy for constructing colloidal cubic diamond crystals through cooperative self-assembly of surface-anisotropic Janus colloids and isotropic colloidal spheres is proposed. The self-assembly is achieved by tuning the interaction and particle size ratio of the colloidal building blocks. The resulting cubic diamond lattices exhibit wide and complete photonic bandgaps that can be easily adjusted by tuning the particle size ratio.
Article
Optics
Fengya Lu, Lei Gong, Yan Kuai, Xi Tang, Yifeng Xiang, Pei Wang, Douguo Zhang
Summary: This study presents an opto-thermophoretic tweezer based on an all-dielectric one-dimensional photonic crystal (1DPC) for reversible assembly of biological cells. Through the combination of optical and thermophoretic manipulation, the tweezer can optically trap single particles and serve as a controllable origin for reversible cellular assembly. Numerical simulations confirm the long-range manipulations on the all-dielectric 1DPC platform. This technique provides a micromanipulation toolbox for potential applications in biomedical sciences.
PHOTONICS RESEARCH
(2022)
Article
Physics, Multidisciplinary
Yuchun She, Zhaoming Cheng, Hongju Li, Shi Hu, Yunbao Zheng, Feng Wu
Summary: As a type of metamaterial, elliptical metamaterials (EMMs) with elliptical iso-frequency curves offer a lossless platform to manipulate light with high efficiency. In this study, we construct a special class of one-dimensional (1D) photonic crystals (PCs) called all-EMM 1D PCs using two types of EMMs, and achieve polarization-sensitive photonic bandgaps (PBGs). By taking advantage of the polarization-sensitive property of the PBG, we design a wide-angle high-performance polarizer.
Article
Chemistry, Physical
Zhan-Wei Li, Yu-Wei Sun, Yan-Hui Wang, You-Liang Zhu, Zhong-Yuan Lu, Zhao-Yan Sun
Summary: Using simple deformable triblock Janus colloids, increasing particle softness enhances the self-assembly and photonic bandgap performance of the structures. Direct pyrochlore lattices formed from overlapping soft particles exhibit larger photonic bandgaps than nonoverlapping structures, and proper overlap caused by softness can significantly improve the photonic properties of the structures.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Mengwei Xu, Ting Lu, Dongming Qi, Ling Bai, Ying Pan, Dong Zhang, Hongting Zhao
Summary: In this study, monodisperse brown polysulfide (PSF) nanospheres and cross-linkable polyacrylate (CLPA) nanoparticles were used to construct vivid amorphous photonic crystal (APC) patterns with high mechanical stability. The high refractive index and light-absorbing characteristics of PSF nanospheres suppressed multiple incoherent light scattering inside APCs, resulting in noniridescent structural colors with high color saturation. The embedding of CLPA nanoparticles enhanced the mechanical stability of the APCs. The optimized APC samples displayed vivid colorful colors and excellent resistance towards mechanical scratches.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Engineering, Electrical & Electronic
Yifan Zhang, Fengya Lu, Yanan Fu, Changjun Min, Xiaocong Yuan, Douguo Zhang
Summary: We have demonstrated a platform for optical evanescent vortex by focusing a laser beam with orbital angular momentum onto a one-dimensional photonic crystal. This platform can trap and manipulate different micro-scale specimens simultaneously, relying on the low-loss Bloch surface waves on the dielectric 1DPC. The use of these waves allows for the induction of rotation or orbital motion in the specimens, providing a new mechanism for optical force manipulation.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Physics, Condensed Matter
Feng Wu, Yuchun She, Zhaoming Cheng, Jiaju Wu, Xin Qi, Qian Wei, Shuyuan Xiao, Yong Sun, Haitao Jiang, Hong Chen
Summary: In this study, we investigate the polarization-dependent property of photonic bandgaps (PBGs) in a class of one-dimensional photonic crystals (PhCs) entirely consisting of all-dielectric elliptical metamaterials (EMMs) called all-EMM 1-D PhCs. We demonstrate that strong polarization-dependent PBGs can be realized in this structure, and further utilize them to achieve a giant photonic spin Hall effect (PSHE). Our work not only establishes a connection between PhCs and all-dielectric metamaterials, but also provides a new route for polarization manipulation of light.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Multidisciplinary
Cicely Shillingford, Brandon M. Kim, Marcus Weck
Summary: Capillary assembly of liquid particles (CALP) is a microfabrication strategy for engineering arbitrarily shaped polymer colloids. CALP demonstrates versatility by engineering geometrically diverse Janus and patchy colloids using consecutive assembly and heterogeneous coassembly. It enables the design and fabrication of colloids with complex internal construction to target hierarchical functional materials, with the potential for further processing into colloid-based microscale devices.
Article
Nanoscience & Nanotechnology
Lin-Sui Li, Yu-Hui Tan, Wen-Juan Wei, Hong-Qiang Gao, Yun-Zhi Tang, Xiao-Bo Han
Summary: Two new low-dimensional HOIPs have been successfully synthesized, showing distinct structures and properties, with the second one exhibiting higher performance and greater research and application potential than the first one.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Hidemasa Negoro, Hiroshi Sugimoto, Tatsuki Hinamoto, Minoru Fujii
Summary: A solution-based bottom-up process is developed to produce one- and two-dimensional arrays of densely packed spherical nanoparticles (NPs) of crystalline silicon (Si), which have the lowest order Mie resonance in the visible range. The arrays are formed using a template-assisted self-assembly method and transferred to an arbitrary substrate. The proper formation of Si NP arrays is demonstrated through polarization-resolved scattering spectra measurements and numerical simulations. The results show strong modification of scattering spectra due to near-field coupling of the electric dipole (ED) modes and the Kerker effect.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Optics
Feng Wu, Tingting Liu, Mingyuan Chen, Shuyuan Xiao
Summary: A new method is established in this study by combining one-dimensional photonic crystals with loss-free all-dielectric metamaterials to engineer the angle-dependence of photonic bandgaps. By introducing different defects into the designed structures, the angle-dependence of defect modes can be flexibly controlled. This approach opens a pathway for precisely engineering photonic bandgaps.
Article
Materials Science, Multidisciplinary
Bita Roumi, Mehmet Erzen, Reza Abdi-Ghaleh, Harun Akkus, Yuanguo Zhou, Yogendra Kumar Prajapati, Yijun Cai, Jitendra Bahadur Maurya
Summary: A thermally switching absorber based on a one-dimensional photonic crystal containing a phase change material is proposed for terahertz applications. The structure utilizes vanadium dioxide (VO2) as the phase change material, which undergoes a semiconductor-to-metal transition with temperature variation. By adjusting the VO2 thickness, the absorption band can switch from low to high frequencies and vice versa, as well as change from narrow to broadband absorption at the same frequency when the temperature increases from 300 to 350 K. The absorber shows high absorptivity over 90% in both frequency bands and has the potential for applications in terahertz switches, filters, and sensors.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
Susana Marin-Aguilar, Fabrizio Camerin, Marjolein Dijkstra
Summary: The assembly of colloidal cubic diamond is a challenging process. This study explores the conditions for the nucleation of cubic diamond, focusing on the effect of depletion and DNA-mediated interactions. The study finds that a specific balance between the strength and range of depletion interactions enhances the self-assembly of stable cubic diamond.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Review
Chemistry, Multidisciplinary
Miaomiao Li, Quanqian Lyu, Bolun Peng, Xiaodong Chen, Lianbin Zhang, Jintao Zhu
Summary: This review summarizes the design principles and applications of colloidal photonic composites (CPCs), focusing on the building blocks and strategies for constructing CPCs with robust performance and specific functionality. The state-of-the-art applications, including colorful coatings, anti-counterfeiting, and regulation of photoluminescence, are discussed, with a particular emphasis on visualized sensing. The current challenges and potential for future developments in this field are also explored.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yifeng Xiang, Junxue Chen, Douguo Zhang, Ruxue Wang, Yan Kuai, Fengya Lu, Xi Tang, Pei Wang, Hai Ming, Mary Rosenfeld, Ramachandram Badugu, Joseph R. Lakowicz
APPLIED SCIENCES-BASEL
(2018)
Article
Multidisciplinary Sciences
Yan Kuai, Junxue Chen, Xi Tang, Yifeng Xiang, Fengya Lu, Cuifang Kuang, Liang Xu, Weidong Shen, Junjie Cheng, Huaqiao Gui, Gang Zou, Pei Wang, Hai Ming, Jianguo Liu, Xu Liu, Joseph R. Lakowicz, Douguo Zhang
Article
Physics, Multidisciplinary
Yifeng Xiang, Xi Tang, Changjun Min, Guanghao Rui, Yan Kuai, Fengya Lu, Pei Wang, Hai Ming, Qiwen Zhan, Xiaocong Yuan, Joseph R. Lakowicz, Douguo Zhang
ANNALEN DER PHYSIK
(2020)
Article
Nanoscience & Nanotechnology
Yifeng Xiang, Junxue Chen, Xi Tang, Ruxue Wang, Qiwen Zhan, Joseph R. Lakowicz, Douguo Zhang
Summary: Placing an ultrathin silver nanowire with a diameter less than 100 nm on a photonic band gap structure can excite surface plasmons that propagate along two side-walls, leading to the observation of two bright lines. Simulations suggest that the unique phase distribution of plasmons on the two side-walls of the silver nanowire is responsible for the bright lines observed in the far-field. The configuration reported in this work, combined with the sensing ability of surface plasmons to its environment, can function as a sensing platform to monitor environmental changes in the near-field region of the ultrathin nanowire.
Article
Optics
Xi Tang, Haoqi Luo, Junxue Chen, Ramachandram Badugu, Pei Wang, Joseph R. Lakowicz, Douguo Zhang
Summary: Research has shown that conversion between guided modes can be achieved in low-index ridge waveguides, maintaining high purity and stability at specific wavelengths, which is beneficial for developing lab-on-a-chip photonic devices.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Physics, Applied
Haoqi Luo, Xi Tang, Yonghua Lu, Pei Wang
Summary: BSW confined at the surface of a truncated dielectric multilayer is a low-loss platform for chip-scale photonic integration. By engineering geometric parameters, low-loss BSW waveguides and high-Q BSW resonators can be realized, providing an alternative way to achieve ultrasmall resonators with a high-Q factor. Applications of photonic integrated circuits on a low-loss BSW platform include optical communications, enhancing light-matter interactions, and nonlinear optical applications.
PHYSICAL REVIEW APPLIED
(2021)
Article
Materials Science, Multidisciplinary
Yifan Xie, Peng Yang, Linxiao Deng, Zeyu Feng, Jiahe Li, Chutian Zhang, Xi Tang, Chenyan Li, Jialei Li, Lixin Xu, Douguo Zhang, Xin Chen, Gang Zou
Summary: Flexible films with strong and tunable chiroptical responses are in high demand for various applications. This research presents a simple and cost-effective method to fabricate flexible chiroptical polymeric films with giant optical activity, by aligning two anisotropic polydiacetylene layers in a twisted fashion. The films demonstrate a full color, high brightness, fast responsive, multiplex laser display based on circular polarization, and show potential for applications in circular polarized luminescence and optical encryption.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Optics
Fengya Lu, Lei Gong, Yan Kuai, Xi Tang, Yifeng Xiang, Pei Wang, Douguo Zhang
Summary: This study presents an opto-thermophoretic tweezer based on an all-dielectric one-dimensional photonic crystal (1DPC) for reversible assembly of biological cells. Through the combination of optical and thermophoretic manipulation, the tweezer can optically trap single particles and serve as a controllable origin for reversible cellular assembly. Numerical simulations confirm the long-range manipulations on the all-dielectric 1DPC platform. This technique provides a micromanipulation toolbox for potential applications in biomedical sciences.
PHOTONICS RESEARCH
(2022)
Article
Optics
Zetao Fan, Yan Kuai, Xi Tang, Yifan Zhang, Douguo Zhang
Summary: This paper proposes a novel TIRF microscope based on a photonic chip, which can replace conventional objectives or prisms for simplified optical configuration and shadowless illumination.
Article
Chemistry, Physical
Xi Tang, Yan Kuai, Zetao Fan, Zhiyu Zhang, Douguo Zhang
Summary: In this study, a scheme based on the asymmetric excitation of Bloch surface waves (BSWs) was proposed to retrieve the subwavelength cross-section of nanowires. Leakage radiation microscopy was used to observe the propagation of BSWs and collect far-field scattering patterns. The results show that this non-resonant far-field optical technology has the potential to precisely resolve the subwavelength cross-section of nanowires.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Yifeng Xiang, Xi Tang, Yanan Fu, Fenya Lu, Yan Kuai, Changjun Min, Junxue Chen, Pei Wang, Joseph. R. Lakowicz, Xiaocong Yuan, Douguo Zhang