A highly sensitive and reproducible multiplex mycotoxin SERS array based on AuNPs-loaded inverse opal silica photonic crystal microsphere

2021 ◽  
pp. 131245
Author(s):  
Saisai Jiao ◽  
Jie Liu ◽  
Jialong Sun ◽  
Yunwei Chang ◽  
Siwei Wang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Inverse Opal ◽  
Highly Sensitive

Visual detection of carbonate ions by inverse opal photonic crystal polymers in aqueous solution

2015 ◽  
Vol 3 (37) ◽  
pp. 9524-9527 ◽  
Author(s):  
Lu Li ◽  
Bin Zhao ◽  
Yue Long ◽  
Jin-Ming Gao ◽  
Guoqiang Yang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photonic Crystal ◽  
Polymer Films ◽  
Visual Detection ◽  
Color Change ◽  
Ph Dependence ◽  
Inverse Opal ◽  
Carbonate Ions ◽  
Crystal Polymer

This communication demonstrates a facile method to detect CO32− by naked eyes through color change based on the pH dependence of inverse opal photonic crystal polymer films.

scholarly journals Elongated-Hexagonal Photonic Crystal for Buffering, Sensing, and Modulation

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 809
Author(s):  
Sayed Elshahat ◽  
Israa Abood ◽  
Zixian Liang ◽  
Jihong Pei ◽  
Zhengbiao Ouyang
Keyword(s):  
Photonic Crystal ◽  
Irregular Waveguide ◽  
Optical Confinement ◽  
Physical Size ◽  
External Voltage ◽  
Dynamic Modulation ◽  
Highly Sensitive ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Higher Sensitivity

A paradigm for high buffering performance with an essential fulfillment for sensing and modulation was set forth. Through substituting the fundamental two rows of air holes in an elongated hexagonal photonic crystal (E-PhC) by one row of the triangular gaps, the EPCW is molded to form an irregular waveguide. By properly adjusting the triangle dimension solitary, we fulfilled the lowest favorable value of the physical-size of each stored bit by about μ5.5510 μm. Besides, the EPCW is highly sensitive to refractive index (RI) perturbation attributed to the medium through infiltrating the triangular gaps inside the EPCW by microfluid with high RI sensitivity of about 379.87 nm/RIU. Furthermore, dynamic modulation can be achieved by applying external voltage and high electro-optical (EO) sensitivity is obtained of about 748.407 nm/RIU. The higher sensitivity is attributable to strong optical confinement in the waveguide region and enhanced light-matter interaction in the region of the microfluid triangular gaps inside the EPCW and conventional gaps (air holes). The EPCW structure enhances the interaction between the light and the sensing medium.

Chemically Responsive Polymer Inverse-Opal Photonic Crystal Films Created by a Self-Assembly Method

2016 ◽  
Vol 120 (22) ◽  
pp. 11938-11946 ◽  
Author(s):  
Huilin Zhao ◽  
Jianping Gao ◽  
Zeng Pan ◽  
Guanbo Huang ◽  
Xiaoyang Xu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Self Assembly ◽  
Inverse Opal ◽  
Assembly Method ◽  
Responsive Polymer ◽  
Crystal Films

An ordered fish scale-like Co-TiO2/GO inverse opal photonic crystal as the multifunctional SERS substrate

2021 ◽  
Vol 858 ◽  
pp. 158356
Author(s):  
Zhou Zhao ◽  
Huan He ◽  
Yaping Zhu ◽  
Xueyan Wang ◽  
Yuhua Shen ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Sers Substrate ◽  
Fish Scale ◽  
Inverse Opal

scholarly journals A Highly Sensitive, Polarization Maintaining Photonic Crystal Fiber Sensor Operating in the THz Regime

Photonics ◽  
2018 ◽  
Vol 5 (4) ◽  
pp. 40 ◽  
Author(s):  
Sohel Rana ◽  
Nirmala Kandadai ◽  
Harish Subbaraman
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
High Sensitivity ◽  
Relative Sensitivity ◽  
Computational Technique ◽  
The Finite Element Method ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Highly Sensitive ◽  
Imaging And Spectroscopy

In this paper, a high sensitivity, polarization preserving photonic crystal fiber (PCF), based on circular air holes for sensing in the terahertz (THz) band, is presented. The finite element method, a practical and precise computational technique for describing the interactions between light and matter, is used to compute the modal properties of the designed fiber. For the designed PCF, comprising of circular air holes in both the cladding and in the porous core, a relative sensitivity of 73.5% and a high birefringence of 0.013 are achieved at 1.6 THz. The all circular air-hole structure, owing to its simplicity and compatibility with the current fiber draw technique for PCF fabrication, can be realized practically. It is anticipated that the designed fiber can be employed in applications such as detection of biological samples and toxic chemicals, imaging, and spectroscopy.

Flexible construction of cellulose photonic crystal optical sensing nano-materials detecting organic solvents

The Analyst ◽  
2019 ◽  
Vol 144 (6) ◽  
pp. 1892-1897 ◽  
Author(s):  
Dan Yan ◽  
Renbin Li ◽  
Wei Lu ◽  
Chunmei Piao ◽  
Lili Qiu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Polymethyl Methacrylate ◽  
Organic Solvents ◽  
Efficient Method ◽  
Carboxymethyl Cellulose ◽  
Optical Sensing ◽  
Inverse Opal ◽  
Nano Materials ◽  
Crystal Films ◽  
Colloidal Arrays

We developed a simple and efficient method to construct 3D and 2D opal and inverse opal cellulose photonic crystal films (CPCF) by embedding 3D or 2D polymethyl methacrylate (PMMA) colloidal arrays into carboxymethyl cellulose (CMC), respectively.

Three-Dimensional Inverse Opal Photonic Crystal Substrates toward Efficient Capture of Circulating Tumor Cells

2017 ◽  
Vol 9 (36) ◽  
pp. 30510-30518 ◽  
Author(s):  
Hongwei Xu ◽  
Biao Dong ◽  
Qiaoqin Xiao ◽  
Xueke Sun ◽  
Xinran Zhang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Tumor Cells ◽  
Circulating Tumor Cells ◽  
Three Dimensional ◽  
Inverse Opal

Highly sensitive SERS detection of cancer proteins in low sample volume using hollow core photonic crystal fiber

2012 ◽  
Vol 33 (1) ◽  
pp. 293-298 ◽  
Author(s):  
Dinish U. S. ◽  
Chit Yaw Fu ◽  
Kiat Seng Soh ◽  
Bhuvaneswari Ramaswamy ◽  
Anil Kumar ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Sample Volume ◽  
Hollow Core ◽  
Crystal Fiber ◽  
Highly Sensitive ◽  
Sers Detection

scholarly journals Design A Sensor Mach Zender Interferometer for the Detection of Chemical and Organic Substances Present In Food and Health Drinks

2019 ◽  
Vol 8 (6) ◽  
pp. 4726-4730
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Model Simulation ◽  
Soft Drink ◽  
Cmos Technology ◽  
Experimental Program ◽  
Organic Substances ◽  
Highly Sensitive ◽  
Crystal Model ◽  
Small Change

This Paper includes the nano cavity implementation of the biosensors in the detection of any chemical analyte and pesticide. Chemical, organic substances or any biological analytes are deemed to be present in any food or soft drink. Detection of these kinds of analytes are the potential risk. Photonic Crystals are rapid and precise to reach the sky for the next future. The photonic crystal model simulation is performed using Beam Propagation technology, with change in the refractive index in one selected arm. Therefore the designed MZI acts as a bio sensing device to detect any kind of chemical, bio analyte and organic substances that are present in different food. MZI has many advantages in photonic crystal with the use of least instrument and ready to be compatible with CMOS technology. The experimental program is observed for minute change in refractive index, in this work. Mach Zender Interferometer shall behave as sensor for small change in refractive index of pesticide value and observed power and intensity thus will be accounted. Indicates that it is highly sensitive for the changes in refractive index and in turn it can differentiate between normal food which do not contain any chemical and pesticide present in food

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