Graphene oxide-based nanohybrid for label-free optical sensing

2014 ◽  
Author(s):  
Anna Borriello ◽  
Lucia Sansone ◽  
Giovanna De Luca ◽  
Pietro La Manna ◽  
Pellegrino Musto ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Optical Sensing ◽  
Label Free

Nanochemical fabrication of a graphene oxide-based nanohybrid for label-free optical sensing with fiber optics

2014 ◽  
Vol 202 ◽  
pp. 523-526 ◽  
Author(s):  
Lucia Sansone ◽  
Viera Malachovska ◽  
Pietro La Manna ◽  
Pellegrino Musto ◽  
Anna Borriello ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Fiber Optics ◽  
Optical Sensing ◽  
Label Free

scholarly journals Photonic Crystal Nanobeam Cavities for Nanoscale Optical Sensing: A Review

Micromachines ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 72 ◽  
Author(s):  
Da-Quan Yang ◽  
Bing Duan ◽  
Xiao Liu ◽  
Ai-Qiang Wang ◽  
Xiao-Gang Li ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Optical Waveguides ◽  
Optical Sensing ◽  
Early Stage ◽  
Disease Diagnosis ◽  
Label Free ◽  
Quality Factors ◽  
Integrated Sensor ◽  
Early Stage Disease ◽  
Wide Range

The ability to detect nanoscale objects is particular crucial for a wide range of applications, such as environmental protection, early-stage disease diagnosis and drug discovery. Photonic crystal nanobeam cavity (PCNC) sensors have attracted great attention due to high-quality factors and small-mode volumes (Q/V) and good on-chip integrability with optical waveguides/circuits. In this review, we focus on nanoscale optical sensing based on PCNC sensors, including ultrahigh figure of merit (FOM) sensing, single nanoparticle trapping, label-free molecule detection and an integrated sensor array for multiplexed sensing. We believe that the PCNC sensors featuring ultracompact footprint, high monolithic integration capability, fast response and ultrahigh sensitivity sensing ability, etc., will provide a promising platform for further developing lab-on-a-chip devices for biosensing and other functionalities.

scholarly journals X-ray Photoelectron Spectroscopy Analysis of Chitosan–Graphene Oxide-Based Composite Thin Films for Potential Optical Sensing Applications

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 478
Author(s):  
Wan Mohd Ebtisyam Mustaqim Mohd Daniyal ◽  
Yap Wing Fen ◽  
Silvan Saleviter ◽  
Narong Chanlek ◽  
Hideki Nakajima ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Graphene Oxide ◽  
Photoelectron Spectroscopy ◽  
Functional Group ◽  
Optical Sensing ◽  
Composite Thin Films ◽  
Cobalt Ions ◽  
X Ray ◽  
Sensing Applications

In this study, X-ray photoelectron spectroscopy (XPS) was used to study chitosan–graphene oxide (chitosan–GO) incorporated with 4-(2-pyridylazo)resorcinol (PAR) and cadmium sulfide quantum dot (CdS QD) composite thin films for the potential optical sensing of cobalt ions (Co2+). From the XPS results, it was confirmed that carbon, oxygen, and nitrogen elements existed on the PAR–chitosan–GO thin film, while for CdS QD–chitosan–GO, the existence of carbon, oxygen, cadmium, nitrogen, and sulfur were confirmed. Further deconvolution of each element using the Gaussian–Lorentzian curve fitting program revealed the sub-peak component of each element and hence the corresponding functional group was identified. Next, investigation using surface plasmon resonance (SPR) optical sensor proved that both chitosan–GO-based thin films were able to detect Co2+ as low as 0.01 ppm for both composite thin films, while the PAR had the higher binding affinity. The interaction of the Co2+ with the thin films was characterized again using XPS to confirm the functional group involved during the reaction. The XPS results proved that primary amino in the PAR–chitosan–GO thin film contributed more important role for the reaction with Co2+, as in agreement with the SPR results.

Label-free electrochemical immunosensor based on gold nanoparticle/polyethyleneimine/reduced graphene oxide nanocomposite for the ultrasensitive detection of cancer biomarker matrix metalloproteinase-1

The Analyst ◽  
2021 ◽  
Author(s):  
Xinke Liu ◽  
Lu-Yin Lin ◽  
Fu-Yen Tseng ◽  
Yu-Cheng Tan ◽  
Jian Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Matrix Metalloproteinase ◽  
Gold Nanoparticle ◽  
Reduced Graphene Oxide ◽  
Electrochemical Immunosensor ◽  
Ultrasensitive Detection ◽  
Label Free ◽  
Matrix Metalloproteinase 1 ◽  
Reduced Graphene ◽  
P Matrix

Matrix metalloproteinase-1 (MMP-1) is associated with many types of cancers, including oral, colorectal, and brain cancers. This paper describes the fabrication of an MMP-1 immunosensor based on a gold nanoparticle/polyethyleneimine/reduced...

Label free Detection of Vitamin B12 Based on Fluorescence Quenching of Graphene Oxide Nanolayer

2015 ◽  
Vol 23 (10) ◽  
pp. 878-884 ◽  
Author(s):  
Javad Gholami ◽  
Mehrdad Manteghian ◽  
Alireza Badiei ◽  
Mehran Javanbakht ◽  
Hiroshi Ueda
Keyword(s):  
Graphene Oxide ◽  
Fluorescence Quenching ◽  
Vitamin B12 ◽  
Label Free ◽  
Label Free Detection

A High reproducible SERS sensor based on Au nanoparticles /Graphene Oxide hybrid nanocomposite for label-free quantitative detection of antibiotics

The Analyst ◽  
2021 ◽  
Author(s):  
Yan Wang ◽  
Huacai Chen ◽  
Li Jiang
Keyword(s):  
Graphene Oxide ◽  
Broad Spectrum ◽  
Au Nanoparticles ◽  
Quantitative Detection ◽  
Antibiotic Residues ◽  
Hybrid Nanocomposite ◽  
Label Free ◽  
Animal Diseases ◽  
Broad Spectrum Antibiotics

Ampicillin and nitrofurantoin, as broad-spectrum antibiotics, are widely used in the prevention of animal diseases and to ensure livestock growth. Large amounts of antibiotic residues exist in animal-derived foods, affecting...

scholarly journals Active Delivery of Single DNA Molecules into a Plasmonic Nanopore for Label-Free Optical Sensing

Nano Letters ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 8003-8010 ◽  
Author(s):  
Xin Shi ◽  
Daniel V. Verschueren ◽  
Cees Dekker
Keyword(s):  
Optical Sensing ◽  
Label Free ◽  
Dna Molecules ◽  
Single Dna Molecules
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