scholarly journals Surface functionalization of ZnO:Ag columnar thin films with AgAu and AgPt bimetallic alloy nanoparticles as an efficient pathway for highly sensitive gas discrimination and early hazard detection in batteries

2020 ◽  
Vol 8 (32) ◽  
pp. 16246-16264
Author(s):  
Alexander Vahl ◽  
Oleg Lupan ◽  
David Santos-Carballal ◽  
Vasile Postica ◽  
Sandra Hansen ◽  
...  
Keyword(s):  
Thin Films ◽  
Surface Functionalization ◽  
Alloy Nanoparticles ◽  
Sensing Properties ◽  
Bimetallic Alloy ◽  
Hazard Detection ◽  
Highly Sensitive ◽  
Surface Decoration ◽  
The Impact

This work presents the impact of surface decoration on the VOC sensing properties of ZnO:Ag columnar films by AgPt and AgAu bimetallic alloy nanoparticles.

An investigation in to the impact of Ti doping on the structural, optical and sensing properties of spray deposited nanocrystalline ZrO2 thin films

Optik ◽  
2018 ◽  
Vol 159 ◽  
pp. 305-314
Author(s):  
Adel H. Omran Alkhayatt ◽  
Saleem Azara Hussain ◽  
Eqbal Abduljalil Mahdi
Keyword(s):  
Thin Films ◽  
Sensing Properties ◽  
The Impact ◽  
Ti Doping

scholarly journals Highly enhanced photocatalytic activity of WO3 thin films loaded with Pt–Ag bimetallic alloy nanoparticles

RSC Advances ◽  
2017 ◽  
Vol 7 (2) ◽  
pp. 947-956 ◽  
Author(s):  
Pengyu Dong ◽  
Bairen Yang ◽  
Chao Liu ◽  
Fenghua Xu ◽  
Xinguo Xi ◽  
...  
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Alloy Nanoparticles ◽  
Bimetallic Alloy ◽  
Novel Approach ◽  
Wo3 Thin Films

This study provides a novel approach to design efficient WO3 photocatalysts decorated by bimetallic Pt–Ag alloy nanoparticles.

scholarly journals The Role of Surface Chemistry in the Efficacy of Protein and DNA Microarrays for Label-Free Detection: An Overview

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1026
Author(s):  
Elisa Chiodi ◽  
Allison M. Marn ◽  
Matthew T. Geib ◽  
M. Selim Ünlü
Keyword(s):  
Surface Chemistry ◽  
Surface Functionalization ◽  
Dna Microarrays ◽  
Label Free ◽  
Polymeric Coatings ◽  
Label Free Detection ◽  
Particle Imaging ◽  
Single Particle Imaging ◽  
The Impact

The importance of microarrays in diagnostics and medicine has drastically increased in the last few years. Nevertheless, the efficiency of a microarray-based assay intrinsically depends on the density and functionality of the biorecognition elements immobilized onto each sensor spot. Recently, researchers have put effort into developing new functionalization strategies and technologies which provide efficient immobilization and stability of any sort of molecule. Here, we present an overview of the most widely used methods of surface functionalization of microarray substrates, as well as the most recent advances in the field, and compare their performance in terms of optimal immobilization of the bioreceptor molecules. We focus on label-free microarrays and, in particular, we aim to describe the impact of surface chemistry on two types of microarray-based sensors: microarrays for single particle imaging and for label-free measurements of binding kinetics. Both protein and DNA microarrays are taken into consideration, and the effect of different polymeric coatings on the molecules’ functionalities is critically analyzed.

scholarly journals The impact of fluence dependent 120 MeV Ag swift heavy ion irradiation on the changes in structural, electronic, and optical properties of AgInSe2 nano-crystalline thin films for optoelectronic applications

RSC Advances ◽  
2021 ◽  
Vol 11 (42) ◽  
pp. 26218-26227
Author(s):  
R. Panda ◽  
S. A. Khan ◽  
U. P. Singh ◽  
R. Naik ◽  
N. C. Mishra
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Ion Irradiation ◽  
Heavy Ion ◽  
Swift Heavy Ion Irradiation ◽  
Heavy Ion Irradiation ◽  
Swift Heavy Ion ◽  
Nano Crystalline ◽  
Shi Irradiation ◽  
The Impact

Swift heavy ion (SHI) irradiation in thin films significantly modifies the structure and related properties in a controlled manner.

Assessing simultaneous effect of Ar/O2 ratio and process pressure on ammonia sensing properties of reactive DC magnetron sputtered SnO2 thin films

2021 ◽  
Vol 286 ◽  
pp. 129239
Author(s):  
Rahul Prajesh ◽  
Ravindra Kumar Jha ◽  
Vikas Saini ◽  
Mohd Nahid ◽  
Vinay Goyal ◽  
...  
Keyword(s):  
Thin Films ◽  
Sensing Properties ◽  
Simultaneous Effect ◽  
Ammonia Sensing ◽  
Process Pressure ◽  
Sno2 Thin Films

scholarly journals Interphotoreceptor coupling: an evolutionary perspective

2021 ◽  
Author(s):  
Lorenzo Cangiano ◽  
Sabrina Asteriti
Keyword(s):  
Visual Information ◽  
Signal To Noise Ratio ◽  
Electrical Coupling ◽  
Physiological Role ◽  
Cellular Processes ◽  
Contact Points ◽  
Highly Sensitive ◽  
The Many ◽  
The Impact

AbstractIn the vertebrate retina, signals generated by cones of different spectral preference and by highly sensitive rod photoreceptors interact at various levels to extract salient visual information. The first opportunity for such interaction is offered by electrical coupling of the photoreceptors themselves, which is mediated by gap junctions located at the contact points of specialised cellular processes: synaptic terminals, telodendria and radial fins. Here, we examine the evolutionary pressures for and against interphotoreceptor coupling, which are likely to have shaped how coupling is deployed in different species. The impact of coupling on signal to noise ratio, spatial acuity, contrast sensitivity, absolute and increment threshold, retinal signal flow and colour discrimination is discussed while emphasising available data from a variety of vertebrate models spanning from lampreys to primates. We highlight the many gaps in our knowledge, persisting discrepancies in the literature, as well as some major unanswered questions on the actual extent and physiological role of cone-cone, rod-cone and rod-rod communication. Lastly, we point toward limited but intriguing evidence suggestive of the ancestral form of coupling among ciliary photoreceptors.

scholarly journals Multivariate Analysis as a Tool for Quantification of Conformational Transitions in DNA Thin Films

2021 ◽  
Vol 11 (13) ◽  
pp. 5895
Author(s):  
Kristina Serec ◽  
Sanja Dolanski Babić
Keyword(s):  
Thin Films ◽  
Learning Algorithm ◽  
Principal Component Regression ◽  
Principal Component ◽  
Conformational Transitions ◽  
Cancer Diagnostics ◽  
Dna Conformation ◽  
Support Vector ◽  
Multivariate Statistical ◽  
The Impact

The double-stranded B-form and A-form have long been considered the two most important native forms of DNA, each with its own distinct biological roles and hence the focus of many areas of study, from cellular functions to cancer diagnostics and drug treatment. Due to the heterogeneity and sensitivity of the secondary structure of DNA, there is a need for tools capable of a rapid and reliable quantification of DNA conformation in diverse environments. In this work, the second paper in the series that addresses conformational transitions in DNA thin films utilizing FTIR spectroscopy, we exploit popular chemometric methods: the principal component analysis (PCA), support vector machine (SVM) learning algorithm, and principal component regression (PCR), in order to quantify and categorize DNA conformation in thin films of different hydrated states. By complementing FTIR technique with multivariate statistical methods, we demonstrate the ability of our sample preparation and automated spectral analysis protocol to rapidly and efficiently determine conformation in DNA thin films based on the vibrational signatures in the 1800–935 cm−1 range. Furthermore, we assess the impact of small hydration-related changes in FTIR spectra on automated DNA conformation detection and how to avoid discrepancies by careful sampling.

Structural, morphological and gas sensing properties of Zn1−xSnxO thin films by SILAR method

2021 ◽  
Vol 127 (4) ◽  
Author(s):  
Irmak Karaduman Er ◽  
Memet Ali Yıldırım ◽  
H. Hasan Örkçü ◽  
Aytunç Ateş ◽  
Selim Acar
Keyword(s):  
Thin Films ◽  
Gas Sensing ◽  
Silar Method ◽  
Sensing Properties ◽  
Gas Sensing Properties
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