Fast Responsive Crystalline Colloidal Array Photonic Crystal Glucose Sensors

2006 ◽  
Vol 78 (14) ◽  
pp. 5149-5157 ◽  
Author(s):  
Matti Ben-Moshe ◽  
Vladimir L. Alexeev ◽  
Sanford A. Asher
Keyword(s):  
Photonic Crystal ◽  
Glucose Sensors ◽  
Crystalline Colloidal Array

A molecularly imprinted colloidal array as a colorimetric sensor for label-free detection of p-nitrophenol

2014 ◽  
Vol 6 (3) ◽  
pp. 831-837 ◽  
Author(s):  
Fei Xue ◽  
Zihui Meng ◽  
Yifei Wang ◽  
Shuyue Huang ◽  
Qiuhong Wang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Molecular Imprinting ◽  
Colorimetric Sensor ◽  
Label Free ◽  
Molecularly Imprinted ◽  
Label Free Detection ◽  
Molecular Imprinting Technique ◽  
Crystalline Colloidal Array

We report on the synthesis of a label-free p-nitrophenol (PNP) responsive crystalline colloidal array (CCA) based on the combination of a photonic crystal and the molecular imprinting technique.

scholarly journals Dependence of Photonic Crystal Nanocomposite Elasticity on Crystalline Colloidal Array Particle Size

2009 ◽  
Vol 42 (13) ◽  
pp. 4403-4406 ◽  
Author(s):  
Michelle M. Ward Muscatello ◽  
Lee E. Stunja ◽  
Prachi Thareja ◽  
Luling Wang ◽  
Justin J. Bohn ◽  
...  
Keyword(s):  
Particle Size ◽  
Photonic Crystal ◽  
Crystalline Colloidal Array

Study on a Photonic Crystal Hydrogel Material for Chemical Sensing

2015 ◽  
Vol 14 (01n02) ◽  
pp. 1460025
Author(s):  
Jia-Yu Xu ◽  
Chun-Xiao Yan ◽  
Xiao-Chun Hu ◽  
Chao Liu ◽  
Hua-Min Tang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Ionic Strength ◽  
Chemical Modification ◽  
Chemical Sensing ◽  
Electrostatic Interactions ◽  
Carboxyl Groups ◽  
Polystyrene Spheres ◽  
Crystalline Colloidal Arrays ◽  
Crystalline Colloidal Array ◽  
Monodisperse Polystyrene

There is intense interest in the applications of photonic crystal hydrogel materials for the detection of glucose, metal ions, organophosphates and so on. In this paper, monodisperse polystyrene spheres with diameters between 100 ~ 440 nm were synthesized by emulsion polymerization. Highly charged polystyrene spheres readily self-assembled into crystalline colloidal array because of electrostatic interactions. Photonic crystal hydrogel materials were formed by polymerization of acrylamide hydrogel around the crystalline colloidal arrays of polystyrene spheres. After chemical modification of hydrogel backbone with carboxyl groups, our photonic crystals hydrogel materials are demonstrated to be excellent in response to pH and ionic strength changes.

Ultraviolet Raman Wide-Field Hyperspectral Imaging Spectrometer for Standoff Trace Explosive Detection

2016 ◽  
Vol 71 (2) ◽  
pp. 173-185 ◽  
Author(s):  
Kyle T. Hufziger ◽  
Sergei V. Bykov ◽  
Sanford A. Asher
Keyword(s):  
Photonic Crystal ◽  
Wide Field ◽  
Face Centered Cubic ◽  
Experimental Conditions ◽  
Imaging Spectrometer ◽  
Uv Raman ◽  
Crystalline Colloidal Array ◽  
Deep Uv ◽  
Face Centered ◽  
Raman Spectral

We constructed the first deep ultraviolet (UV) Raman standoff wide-field imaging spectrometer. Our novel deep UV imaging spectrometer utilizes a photonic crystal to select Raman spectral regions for detection. The photonic crystal is composed of highly charged, monodisperse 35.5 ± 2.9 nm silica nanoparticles that self-assemble in solution to produce a face centered cubic crystalline colloidal array that Bragg diffracts a narrow ∼1.0 nm full width at half-maximum (FWHM) UV spectral region. We utilize this photonic crystal to select and image two different spectral regions containing resonance Raman bands of pentaerythritol tetranitrate (PETN) and NH4NO3 (AN). These two deep UV Raman spectral regions diffracted were selected by angle tuning the photonic crystal. We utilized this imaging spectrometer to measure 229 nm excited UV Raman images containing ∼10–1000 µg/cm2 samples of solid PETN and AN on aluminum surfaces at 2.3 m standoff distances. We estimate detection limits of ∼1 µg/cm2 for PETN and AN films under these experimental conditions.

scholarly journals Hydrogel-Based Colloidal Photonic Crystal Devices for Glucose Sensing

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 625 ◽  
Author(s):  
Wenwei Tang ◽  
Cheng Chen
Keyword(s):  
Photonic Crystal ◽  
Health Monitoring ◽  
Glucose Sensing ◽  
Glucose Sensors ◽  
Glucose Detection ◽  
Epidemic Disease ◽  
Future Design ◽  
Colloidal Photonic Crystals ◽  
Responsive Hydrogels ◽  
Prevention And Therapy

Diabetes, a common epidemic disease, is increasingly hazardous to human health. Monitoring body glucose concentrations for the prevention and therapy of diabetes has become very important. Hydrogel-based responsive photonic crystal (PC) materials are noninvasive options for glucose detection. This article reviews glucose-sensing materials/devices composed of hydrogels and colloidal photonic crystals (CPCs), including the construction of 2D/3D CPCs and 2D/3D hydrogel-based CPCs (HCPCs). The development and mechanisms of glucose-responsive hydrogels and the achieved technologies of HCPC glucose sensors were also concluded. This review concludes by showing a perspective for the future design of CPC glucose biosensors with functional hydrogels.

Polymerized Crystalline Colloidal Array Photonic Crystal with Enhanced Mechanical Property

2015 ◽  
Vol 44 (11) ◽  
pp. 1566-1568 ◽  
Author(s):  
Cheng Chen ◽  
Xueling Zhao ◽  
Hua Bao ◽  
Xuewen Liang ◽  
Zhigang Zhu ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Photonic Crystal ◽  
Crystalline Colloidal Array

Low-voltage field-emission SEM of polymeric membranes for glucose biosensors

1990 ◽  
Vol 48 (3) ◽  
pp. 860-861
Author(s):  
Lorna K. Mayo ◽  
Kenneth C. Moore ◽  
Mark A. Arnold
Keyword(s):  
Glucose Sensor ◽  
Low Voltage ◽  
Glucose Sensors ◽  
Polymeric Membranes ◽  
Artificial Endocrine Pancreas ◽  
Self Monitoring ◽  
Conducting Materials ◽  
Insulin Dependent ◽  
Living Tissues ◽  
Voltage Scanning

An implantable artificial endocrine pancreas consisting of a glucose sensor and a closed-loop insulin delivery system could potentially replace the need for glucose self-monitoring and regulation among insulin dependent diabetics. Achieving such a break through largely depends on the development of an appropriate, biocompatible membrane for the sensor. Biocompatibility is crucial since changes in the glucose sensors membrane resulting from attack by orinter action with living tissues can interfere with sensor reliability and accuracy. If such interactions can be understood, however, compensations can be made for their effects. Current polymer technology offers several possible membranes that meet the unique chemical dynamics required of a glucose sensor. Two of the most promising polymer membranes are polytetrafluoroethylene (PTFE) and silicone (Si). Low-voltage scanning electron microscopy, which is an excellent technique for characterizing a variety of polymeric and non-conducting materials, 27 was applied to the examination of experimental sensor membranes.

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