A highly sensitive sensor for ethyl acetate by changing fluorescent colour of lanthanide complex

Luminescence ◽  
2017 ◽  
Vol 32 (6) ◽  
pp. 1109-1112 ◽  
Author(s):  
Lina Zhao
Keyword(s):  
Ethyl Acetate ◽  
Lanthanide Complex ◽  
Highly Sensitive ◽  
Sensitive Sensor

Synthesis and application of polycation-stabilized gold nanoparticles as a highly sensitive sensor for molecular cysteine determination

2021 ◽  
pp. 106481
Author(s):  
Quang Khanh Nguyen ◽  
Thi Hieu Hoang ◽  
Xuan Thanh Bui ◽  
Thi Anh Huong Nguyen ◽  
Tien Duc Pham ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Highly Sensitive ◽  
Sensitive Sensor

Amperometric sensor for ascorbic acid using a gold electrode modified with ZnO@SiO2 nanospheres

2016 ◽  
Vol 40 (10) ◽  
pp. 8438-8443 ◽  
Author(s):  
Sher Bahadar Khan ◽  
Md Sameer Ahmed ◽  
Abdullah M. Asiri
Keyword(s):  
Ascorbic Acid ◽  
Gold Electrode ◽  
Low Cost ◽  
Amperometric Sensor ◽  
Highly Sensitive ◽  
Sensitive Sensor

A highly sensitive sensor based on ZnO@SiO2 nanospheres has been developed for the detection of ascorbic acid. The developed sensor is very simple and has been fabricated using low cost materials.

scholarly journals Suggested Procedures for the Reproducible Synthesis of Poly(d,l-lactideco-glycolide) Nanoparticles Using the Emulsification Solvent Diffusion Platform

2018 ◽  
Vol 14 (5) ◽  
pp. 448-453 ◽  
Author(s):  
Shadabul Haque ◽  
Ben J. Boyd ◽  
Michelle P. McIntosh ◽  
Colin W. Pouton ◽  
Lisa M. Kaminskas ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Water Solubility ◽  
Plga Nanoparticles ◽  
Diffusion Method ◽  
Salting Out ◽  
Solvent Diffusion ◽  
Zeta Potentials ◽  
Highly Sensitive ◽  
Nanoparticulate Systems ◽  
Uniform Particle Size

Background: Poly(d,l-lactide-co-glycolide) (PLGA) based biodegradable nanoparticles are of key interest for the development of controlled release drug delivery systems and for other biomedical applications. It has been reported that PLGA polymers can be converted into colloidal nanoparticulate systems by various techniques, such as emulsification-diffusion, emulsificationevaporation, interfacial deposition, salting out, dialysis and nanoprecipitation. Emulsificationevaporation with water immiscible solvents including dichloromethane and chloroform has been the preferred method for the synthesis of PLGA nanoparticles due to the low boiling point and limited water solubility of these solvents. We and others, however, have found that when water-immiscible solvents are used for the synthesis of PLGA nanoparticles, particle aggregation, non-uniform particle size and multimodal size distribution are commonly encountered problems. This suggests that the synthesis of PLGA nanoparticles using water immiscible solvents is highly sensitive to small procedural variations that affect overall reproducibility. Objective: This study presents a simple and robust procedure for the preparation of PLGA nanoparticles with very small batch to batch variability (<5% variability in size (z-average) as determined by dynamic light scattering). Results: The results showed that the emulsification solvent diffusion method teamed with partially water-miscible solvents, such as ethyl acetate, is a versatile approach for the preparation of PLGA nanoparticles with highly reproducible sizes (between 50 and 400 nm) and zeta potentials (between - 30 and +30 mV), with relatively narrow polydispersity. Conclusion: Emulsification-diffusion with ethyl acetate is, therefore, a more reliable alternative to several existing procedures for the reproducible and refined synthesis of PLGA nanoparticles.

scholarly journals HIGHLY SENSITIVE SENSOR FOR DETECTION OF VITAMIN B 1 ON THE NANOSTRUCTURAL SURFACE OF NICKEL

2011 ◽  
Vol 8 (1) ◽  
pp. 69-73 ◽  
Author(s):  
O. Шевченко ◽  
O. Лут ◽  
О. Aксіментьєва
Keyword(s):  
Vitamin B ◽  
Highly Sensitive ◽  
Sensitive Sensor

A highly sensitive sensor based on ordered mesoporous ZnFe2O4 for electrochemical detection of dopamine

2020 ◽  
Vol 1096 ◽  
pp. 26-33 ◽  
Author(s):  
Yarong Huang ◽  
Ying Tang ◽  
Shichong Xu ◽  
Ming Feng ◽  
Yongsheng Yu ◽  
...  
Keyword(s):  
Electrochemical Detection ◽  
Ordered Mesoporous ◽  
Highly Sensitive ◽  
Sensitive Sensor

scholarly journals Design and Analysis of a Slot Photonic Crystal Waveguide for Highly Sensitive Evanescent Field Absorption Sensing in Fluids

Micromachines ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 781
Author(s):  
Reyhaneh Jannesari ◽  
Gerald Pühringer ◽  
Thomas Grille ◽  
Bernhard Jakoby
Keyword(s):  
Photonic Crystal ◽  
Evanescent Field ◽  
Slab Thickness ◽  
Photonic Crystal Waveguide ◽  
Dielectric Slab ◽  
Plane Wave Expansion ◽  
Highly Sensitive ◽  
Center Position ◽  
Sensitive Sensor ◽  
Difference Time

The design and modeling of a highly sensitive sensor based on a slot photonic crystal waveguide (slot-PCWG) is presented. The structure consists of cylindrical air rods drilled in a dielectric slab on a triangular lattice, which are filled with SiO2. The waveguide is formed by removing elements from the regular photonic crystal grid in a row, and embedding a slot in the center position. This concept allows for a vast enhancement of the evanescent field ratio, leading to a strong overlap between the field of the waveguide mode and the analyte. In the present work, we show that the sensitivity at the constant slab thickness of the slot-PCWG modes is greatly enhanced, up to a factor of 7.6 compared with the corresponding PCWG modes or Si-slab WGs. The finite-difference time-domain (FDTD) technique and plane wave expansion (PWE) methods were used to study the dispersion and profile of the PCWG mode. The simulation results show the potential of this design, which will be fabricated and tested in the following steps of the project.

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