scholarly journals Synergistic SERS Enhancement in GaN‐Ag Hybrid System toward Label‐Free and Multiplexed Detection of Antibiotics in Aqueous Solutions

2021 ◽  
pp. 2100640
Author(s):  
Kang Hyun Lee ◽  
Hanhwi Jang ◽  
Yoon Seok Kim ◽  
Chul‐Ho Lee ◽  
Seunghee H. Cho ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Hybrid System ◽  
Label Free ◽  
Multiplexed Detection ◽  
Sers Enhancement

scholarly journals Synergistic SERS Enhancement in GaN‐Ag Hybrid System toward Label‐Free and Multiplexed Detection of Antibiotics in Aqueous Solutions (Adv. Sci. 19/2021)

2021 ◽  
Vol 8 (19) ◽  
pp. 2170121
Author(s):  
Kang Hyun Lee ◽  
Hanhwi Jang ◽  
Yoon Seok Kim ◽  
Chul‐Ho Lee ◽  
Seunghee H. Cho ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Hybrid System ◽  
Label Free ◽  
Multiplexed Detection ◽  
Sers Enhancement

One-step fast and label-free imaging array for multiplexed detection of trace avian influenza viruses

2021 ◽  
pp. 338645
Author(s):  
Dagang Jiang ◽  
Yafei Tian ◽  
Yujiao Zhang ◽  
Xueyun Lu ◽  
Dan Xiao ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Influenza Viruses ◽  
Label Free ◽  
Avian Influenza Viruses ◽  
Multiplexed Detection ◽  
Imaging Array ◽  
One Step

Single-layer MnO2 nanosheet quenched fluorescence ruthenium complexes for sensitive detection of ferrous iron

RSC Advances ◽  
2016 ◽  
Vol 6 (82) ◽  
pp. 79204-79208 ◽  
Author(s):  
Xing He ◽  
Xiaoxiao Yang ◽  
Luo Hai ◽  
Dinggeng He ◽  
Xiaoxiao He ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Ferrous Iron ◽  
Ruthenium Complexes ◽  
Single Layer ◽  
Living Cells ◽  
Sensitive Detection ◽  
Label Free ◽  
Fluorescence Sensors ◽  
Turn On ◽  
Mno2 Nanosheet

Single-layer MnO2 nanosheet quenched fluorescence Ru(bipy)32+ complexes are established as turn-on fluorescence sensors for sensitive and label-free probing of ferrous iron in aqueous solutions, as well as living cells.

A fluorescence enhancement-based label-free homogeneous immunoassay of benzo[a]pyrene (BaP) in aqueous solutions

Chemosphere ◽  
2016 ◽  
Vol 150 ◽  
pp. 407-413 ◽  
Author(s):  
Taihua Li ◽  
Yo Han Choi ◽  
Yong-Beom Shin ◽  
Hwa-Jung Kim ◽  
Min-Gon Kim
Keyword(s):  
Aqueous Solutions ◽  
Fluorescence Enhancement ◽  
Label Free ◽  
Homogeneous Immunoassay

scholarly journals Colloidal solution of silver nanoparticles for label-free colorimetric sensing of ammonia in aqueous solutions

2018 ◽  
Vol 9 ◽  
pp. 499-507 ◽  
Author(s):  
Alessandro Buccolieri ◽  
Antonio Serra ◽  
Gabriele Giancane ◽  
Daniela Manno
Keyword(s):  
Silver Nanoparticles ◽  
Aqueous Solutions ◽  
Morphological Analysis ◽  
Colloidal Solution ◽  
Ammonia Concentration ◽  
Dependent Manner ◽  
Label Free ◽  
Colorimetric Sensing ◽  
Concentration Dependent Manner ◽  
High Ammonia

Silver nanoparticles were synthesized in the presence of saccharides and ammonia (NH3) in the concentration range from 10−2 to 103 ppm to develop an optical sensor for NH3 in aqueous solutions. Ammonia affects the features of the nanoparticles obtained in a concentration-dependent manner as determined by UV–vis absorption analysis and TEM observations. Structural and morphological analysis provides the basis for the production of a colorimetric label-free sensor for ammonia. Overall, surface plasmon resonance increases when ammonia concentration rises, although the functional trend is not the same over the entire investigated ammonia concentration range. Three different ranges have been identified: very low ammonia concentrations from 0.01 to 0.2 ppm, high ammonia concentrations from 20 to 350 ppm and, most importantly, the intermediate or physiological range of ammonia from 0.5 to 10 ppm.

Companion and Point-of-Care Sensor System for Rapid Multiplexed Detection of a Panel of Infectious Disease Markers

2017 ◽  
pp. 247263031769677
Author(s):  
Anjan Panneer Selvam ◽  
Shalini Prasad
Keyword(s):  
Whole Blood ◽  
Dynamic Range ◽  
Electrochemical Impedance ◽  
Limit Of Detection ◽  
Point Of Care ◽  
Lipoteichoic Acid ◽  
Impedance Change ◽  
Label Free ◽  
Nylon Membrane ◽  
Multiplexed Detection

A nanochannel-based electrochemical biosensor has been demonstrated for rapid and multiplexed detection of a panel of three biomarkers associated with rapid detection of sepsis. The label-free biosensor detected procalcitonin (PCT), lipoteichoic acid (LTA), and lipopolysaccharide (LPS) from human whole blood. The biosensor comprises a nanoporous nylon membrane integrated onto a microelectrode sensor platform for nanoconfinement effects. Charge perturbations due to biomarker binding are recorded as impedance changes using electrochemical impedance spectroscopy. The measured impedance change is used to quantitatively determine the concentration of the three biomarkers using antibody receptors from the tested sample. We were successful in detecting and quantifying the three biomarkers from whole blood. The limit of detection was 0.1 ng/mL for PCT and 1 µg/mL for LPS and LTA. The sensor was able to demonstrate a dynamic range of detection from 01.1 ng/mL to 10 µg/mL for PCT and from 1 µg/mL to 1000 µg/mL for LPS and LTA biomarkers. This novel technology has promising preliminary results toward the design of sensors for rapid and sensitive detection of the three panel biomarkers in whole blood toward diagnosis and classification of sepsis.

Monolithically-integrated Young interferometers for label-free and multiplexed detection of biomolecules

2016 ◽  
Author(s):  
Eleftheria Savra ◽  
Antonia Malainou ◽  
Alexandros Salapatas ◽  
Athanasios Botsialas ◽  
Panagiota Petrou ◽  
...  
Keyword(s):  
Label Free ◽  
Multiplexed Detection ◽  
Monolithically Integrated ◽  
Detection Of Biomolecules
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