A microarray chip based on photonic crystals and fluorescence amplification for discrimination of Baijiu

2019 ◽  
Vol 11 (42) ◽  
pp. 5413-5420 ◽  
Author(s):  
Jiawei Li ◽  
Ping Yang ◽  
Rui Huang ◽  
Danqun Huo ◽  
Changjun Hou
Keyword(s):  
Photonic Crystals ◽  
Sensor Array ◽  
Fluorescence Enhancement ◽  
Fluorescence Sensor ◽  
Microarray Chip ◽  
Fluorescence Amplification ◽  
First Time ◽  
Enhancement Property

We report an amplifying fluorescence sensor array chip, which is the first time fluorescence enhancement property of photonic crystals is employed in distilled liquor identify.

Robust hydrophobic veova10-based colloidal photonic crystals towards fluorescence enhancement of quantum dots

Nanoscale ◽  
2020 ◽  
Vol 12 (38) ◽  
pp. 19953-19962 ◽  
Author(s):  
Xiao-Qing Yu ◽  
Zhijie Zhu ◽  
Xingjiang Wu ◽  
Ge Li ◽  
Rui Cheng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photonic Crystals ◽  
Fluorescence Enhancement ◽  
Colloidal Photonic Crystals ◽  
One Step ◽  
First Time

A one-step strategy is developed for the first time to fabricate hydrophobic veova10-based photonic crystals towards the fluorescence enhancement of QDs.

scholarly journals Detection of isoprene traces in exhaled breath by using photonic crystals as a biomarker for chronic liver fibrosis disease

2021 ◽  
Author(s):  
Ahmed Mehaney ◽  
Hussein A. Elsayed ◽  
Ashour M. Ahmed
Keyword(s):  
Liver Fibrosis ◽  
Photonic Crystals ◽  
High Sensitivity ◽  
Dielectric Materials ◽  
Exhaled Breath ◽  
Air Cavity ◽  
One Dimensional ◽  
Sensor Structure ◽  
Volatile Organic ◽  
First Time

Abstract Detection of blood-carried volatile organic compounds (VOCs) existing in the exhaled breath of human is an attractive research point for noninvasive diagnosis of diseases. In this research, we introduce a novel application of photonic crystals (PCs) for the detection of isoprene traces in the exhaled breath as a biomarker for liver fibrosis. This idea is introduced for the first time according to the best of our knowledge. The proposed sensor structure is a one-dimensional (1D) PC constructed from a multilayer stack of two dielectric materials covered with an air cavity layer filled with the dry exhaled breath (DEB) and a thin metallic layer of Au is attached on the top surface. Hence, the proposed sensor is configured as, [prism/Au/air cavity/(GaN/SiO2)10]. The transfer matrix method and the Drude model are adopted to calculate the numerical simulations and reflection spectra of the design. The essential key for sensing isoprene levels is the resonant optical Tamm plasmon (TP) states within the photonic bandgap. The obtained numerical results are promising such as high sensitivity (S) of 0.321 nm/ppm or 278720 nm/RIU. This technique can be reducing the risk of infection during the taking of blood samples by syringe. Also, it can prevent the pain of patients. Finally, this work opens the door for the detection of many diseases by analyzing the breaths of patients based on photonic crystals.

Identification of proteins and bacteria based on a metal ion–gold nanocluster sensor array

2018 ◽  
Vol 10 (32) ◽  
pp. 3939-3944 ◽  
Author(s):  
Yayan Wu ◽  
Bing Wang ◽  
Kai Wang ◽  
Peng Yan
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Sensor Array ◽  
Gold Nanoclusters ◽  
Fluorescence Sensor ◽  
Gold Nanocluster

We report a simple fluorescence sensor array based on metal ions–gold nanoclusters (AuNCs) for the identification of proteins. The proposed method can also be used for bacteria sensing.

Selective sensing of THC and related metabolites in biofluids by host:guest arrays

2020 ◽  
Vol 56 (31) ◽  
pp. 4352-4355
Author(s):  
Adam D. Gill ◽  
Briana L. Hickey ◽  
Wenwan Zhong ◽  
Richard J. Hooley
Keyword(s):  
Sensor Array ◽  
Fluorescence Sensor

A host–guest fluorescence sensor array can selectively detect THC and its metabolites in biofluids such as urine and saliva.

A self-assembly based on a hydrogel interface: facile, rapid, and large-scale preparation of colloidal photonic crystals

2020 ◽  
Vol 4 (8) ◽  
pp. 2409-2417
Author(s):  
Mengfan Wu ◽  
Chuyan Zhang ◽  
Fujing Wei ◽  
Huifang An ◽  
Xiaqing Wang ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Self Assembly ◽  
Large Scale ◽  
The Self ◽  
Colloidal Photonic Crystals ◽  
Large Scale Preparation ◽  
Scale Preparation ◽  
First Time

This is the first time that a hydrogel interface has been used as an assembly interface for the self-assembly of photonic crystals with excellent performances.

Upconversion fluorescence enhancement of NaYF4:Yb/Re nanoparticles by coupling with SiO2 opal photonic crystals

2019 ◽  
Vol 54 (11) ◽  
pp. 8461-8471 ◽  
Author(s):  
Yihao Shi ◽  
Fuqing Zhang ◽  
Jiao Xu ◽  
Kai Zhou ◽  
Chen Chen ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Fluorescence Enhancement ◽  
Upconversion Fluorescence

FABRICATED METAL-FREE CARBON NITRIDE CHARACTERIZATIONS FOR FLUORESCENCE CHEMICAL SENSOR OF NITRATE IONS

2015 ◽  
Vol 76 (13) ◽  
Author(s):  
Nor Shuhada Alim ◽  
Hendrik O. Lintang ◽  
Leny Yuliati
Keyword(s):  
Carbon Nitride ◽  
Diffuse Reflectance ◽  
Chemical Sensor ◽  
Thermal Polymerization ◽  
Fluorescence Sensor ◽  
Free Carbon ◽  
Metal Free ◽  
Nitrate Ions ◽  
Relative Standard ◽  
First Time

In this study, a metal-free carbon nitride (CN) was investigated for the first time as a potential fluorescence sensor for detection of nitrate ions (NO3-). The CN was prepared through thermal polymerization of urea precursor at 823 K and characterized by diffuse reflectance ultraviolet-visible (DR UV-Vis), Fourier transform infrared (FTIR), and fluorescence spectroscopies. The DR UV-Vis spectrum confirmed that CN could absorb light up to 450 nm. On the other hand, the FTIR spectrum revealed the presence of graphitic CN single and double bond characters in the 800-1700 cm-1 region. From the fluorescence spectroscopy, three excitation peaks at 278, 310 and 369 nm were observed due to the presence of N=C, C=O and N-C groups, respectively. The fluorescence sensor capability of the CN was then investigated using concentrations of NO3- in the range of 300-1800 mM. It was confirmed that the intensities of the emission sites were quenched linearly with the concentrations of the NO3-. The CN showed good reproducibility with relative standard deviation (RSD) values were 1.5-7.2%.  These results suggested that CN can act as the fluorescence sensor for NO3-.

scholarly journals Sodium Alginate Cross-Linkable Planar 1D Photonic Crystals as a Promising Tool for Pb2+ Detection in Water

Chemosensors ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 37 ◽  
Author(s):  
Andrea Dodero ◽  
Paola Lova ◽  
Silvia Vicini ◽  
Maila Castellano ◽  
Davide Comoretto
Keyword(s):  
Refractive Index ◽  
Photonic Crystals ◽  
Sodium Alginate ◽  
Spectral Response ◽  
High Refractive Index ◽  
Polluted Water ◽  
Ionic Exchange ◽  
Promising Tool ◽  
Rural Environments ◽  
First Time

Due to its high toxicity, Pb2+ pollution is a serious threat for human health and environments. However, in situ real-time detection of Pb2+ pollution is difficult and laboratory instruments are usually required. Then, the possibility to monitor water quality without laboratory instruments could lead to the extensive assessment of polluted water sources, especially in rural environments and developing countries where large lead concentrations are often found in surface water. Consequently, new simple colorimetric sensors are highly interesting in the field. In this work we report for the first time disposable polymer planar 1D photonic crystals made of poly (N-vinylcarbazole) as high refractive index medium and sodium alginate as low refractive index and active medium for the detection of Pb2+ in water. The detection relies on the ionic exchange occurring into the alginate matrix. This process effectively induces a physical cross-linking phenomenon, which inhibits water solubilization of the polymer. In turn, this affects the spectral response of the planar 1D photonic crystals modifying its color.

Sign in / Sign up

Export Citation Format

Share Document