Article
Polymer Science
Bingqing Zheng, Genqi Liu, Lingli Zhao, Gang Wang, Yue Wang
Summary: We have developed a novel molecularly imprinted two-dimensional photonic crystal hydrogels (LVFXMIPCH) sensor for the visual monitoring of levofloxacin (LVFX). By measuring the diameter of the Debye diffraction ring, the response performance of the sensor was explored. The LVFX-MIPCH sensor showed high sensitivity (as low as 10^(-12) M), excellent specific recognition, and stable reusability.
Article
Chemistry, Physical
Yunlei Cao, Genqi Liu, Bingqing Zheng, Xinlong Wang, Huanhuan Li, Gang Wang, Lingli Zhao, Yue Wang
Summary: A molecularly imprinted two-dimensional photonic crystal hydrogel sensor (SMZ-MIPCH) was developed for the sensitive and specific recognition of sulfamethoxazole (SMZ). The sensor showed a linear relationship between the variation of particle spacing and the logarithm of SMZ concentration, with a detection limit of 10(-16) mol L-1. The sensor displayed high sensitivity, specific recognition abilities for SMZ, and naked eye detection, making it suitable for SMZ detection in water samples.
Article
Optics
Francis Segovia-Chaves, Herbert Vinck-Posada
Summary: This study employs the Guided-Mode Expansion method to calculate the photonic band structure and quality factor of a photonic slab made up of a hexagonal lattice of air holes in a semiconductor material. It is observed that the dielectric constant of the semiconductor changes with pressure at a constant temperature, leading to an increase in frequency of a confined waveguide as pressure rises, while the quality factor decreases.
Review
Nanoscience & Nanotechnology
Ruxi Deng, Meiqi Chang, Yu Chen, Yang Zhou
Summary: This review summarizes the recent advances in the engineering of 2D MXenes for photonic theranostic applications, including synthesis methods, surface modification, functionalization, and photonic biological applications. The challenges and future directions in the field of 2D MXene biomaterials for photonic biomedicines are also discussed.
Article
Physics, Multidisciplinary
Francis Segovia-Chaves, Erik Navarro-Baron, Herbert Vinck-Posada
Summary: The plane wave expansion method was used to calculate the photonic band structure of a hexagonal lattice with Sierpinski structure GaAs scatterers. It was found that when the triangle size is larger than 0.8 a, a complete photonic band gap is produced where the photonic modes cannot propagate.
Article
Engineering, Environmental
Xing Dong, Biao Ma, Lanjie Lei, Yichen Chen, Chengtao Xu, Chao Zhao, Hong Liu
Summary: This article reports the fabrication of three-dimensional (3D) NC material for minimally invasive bioassays in tumor interstitial fluid. The material showed enough mechanical strength and biocompatibility for penetration into mouse skin, and the highly ordered photonic structure on the surface greatly improved the sensitivity for fluorescence immunoassay of trace biomarkers. The method was successfully used to quantitatively detect TNF-alpha in mouse TIF, demonstrating its potential for future cancer diagnostics and treatment.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Physics, Multidisciplinary
Priyanka Kumari Gupta, Punya Prasanna Paltani, Shrivishal Tripathi
Summary: This paper proposes a novel pressure sensor design using a ring resonator based on a two-dimensional photonic crystal (2DPC). The sensor offers a compact size, a wide dynamic range, and a high sensitivity, making it suitable for applications in high-pressure or stress sensing, medical fields, and long pipeline strain monitoring.
Article
Biochemical Research Methods
Qi Li, Songtao Liu, Nyv Mondele Mbola, Kenneth J. Shea, Zihui Meng, Xiao Dong, Min Xue
Summary: A hydrogel-based three-dimensional photonic crystal sensor for specific detection of lactic acid is introduced in this study. The sensor demonstrates rapid response time, good reusability, and selectivity.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Ruixiang Liu, Zhongyu Cai, Qingsong Zhang, Heng Yuan, Guanglei Zhang, De'an Yang
Summary: A novel sensor for monitoring the concentration of H2O2 has been developed using a label-free two-dimensional photonic crystal (PhC) and protein composite hydrogel. The sensor demonstrates good selectivity and sensitivity, and has the potential to accurately detect low concentrations of H2O2 without the need for complex instruments or high costs.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Engineering, Electrical & Electronic
S. A. Sivakumar, R. Naveen, S. Jafar Ali Ibrahim, N. S. Kalyan Chakravarthy, Swathi Amancha, Jaikumar Vinayagam, Palakeeti Kiran, Narasimha Rao Nakka
Summary: In this study, two-dimensional photonic structures were used to achieve chip-to-chip communications. The transportation of signals from one chip to another was found to be possible due to the change in lower potential value. The investigation focused on the photonic band gap analysis of the proposed crystal and the efficiencies of different structures were explored by examining various types of losses.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Margarita Stepikhova, Sergey A. Dyakov, Artem Peretokin, Mikhail Shaleev, Ekaterina E. Rodyakina, Alexey Novikov
Summary: The interaction between Ge(Si)/SOI self-assembled nanoislands and photonic crystal slabs (PCS) with a hexagonal lattice is investigated. It is found that the radiative modes can significantly enhance the integrated photoluminescence (PL) intensity, while the modes associated with bound states in the continuum (BIC) can greatly increase the peak PL intensity.
Article
Chemistry, Analytical
Hui Hong Yan, Min Huang, Fu Zhu, Ru Cheng, Shuai Wen, Liang Tong Li, Hui Liu, Xiao Hui Zhao, Fu Kang Luo, Cheng Zhi Huang, Jian Wang
Summary: In this work, two types of nanoprobes were constructed by selectively modifying hairpin DNA strands on the surface of gold nanorods (AuNRs). When dual microRNAs were present, AuNRs assembled into end-to-end (ETE) and side-by-side (SBS) dimers. The dark-field scattering intensity and red color percentage variation of dimers were significantly different from a single AuNR, enabling the detection of dual microRNAs by combining red color percentage and scattering intensity with principal component analysis.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
N. Manjunatha, Sarika Raga, Sanjay Kumar Gowre, Hameed Miyan, Preeta Sharan
Summary: In this study, a GaAs composite semi-conductive material is utilized as a photonic crystal for diabetes detection using urine, blood, and tear samples. The interaction between light and analyte is determined by the refractive index of bio-samples at different concentrations. The proposed structure demonstrates good wavelength shift, light confinement, and has high-performance parameters for biosensing diabetes and other biomedical diseases.
Article
Nanoscience & Nanotechnology
I-Ming Lin, Rong-Sheng Tsai, Yu-Ting Chou, Yeo-Wan Chiang
Summary: Developing a simple, intuitive, and highly sensitive sensor to detect harmful substances in water is crucial. In this study, an ultrahigh-sensitive sensor based on a quaternized lamellae-structured polystyrene-b-poly(2-vinylpyridine) block copolymer was fabricated, capable of detecting surfactants through direct visualization of the structural color change.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Nanoscience & Nanotechnology
Xuezhi Ma, Nathan Youngblood, Xiaoze Liu, Yan Cheng, Preston Cunha, Kaushik Kudtarkar, Xiaomu Wang, Shoufeng Lan
Summary: This article discusses the method of changing the optical properties of 2D materials by engineering the photonic environment, emphasizing the importance of the interaction between the environment and the materials for efficiency. By modifying dielectric and metallic environments, the light-matter interaction of 2D materials can be effectively shaped.
