Results 1 to 10 of about 7,209 (118)

Graphene Oxide Layer-by-Layer Films for Sensors and Devices [PDF]

Nanomaterials, 2021
Layer-by-layer films of poly (allylamine hydrochloride) (PAH) and graphene oxide (GO) were characterized, looking at growth with the number of bilayers, morphology, and electrical properties. The PAH/GO films revealed a linear increase in absorbance with the increase in the number of deposited bilayers, allowing the determination that 10.7 ± 0.1 mg m−2
Ivan Assunção, Susana Sério, Quirina Ferreira, Nykola Jones, Søren Hoffmann, Paulo Ribeiro, Maria Raposo   +6 more
openaire   +5 more sources

Flavin adenine dinucleotide functionalized gold nanoparticles for the electrochemical detection of dopamine

Sensors and Actuators Reports, 2022
Dopamine (DA) is a neurotransmitter with multiple functions in the central nervous system, and whether found in low levels, activation of biological defense system and physiological activity is influenced.
Jennifer de Pontes Medrades, Cristiane C. Maciel, Ariana de Souza Moraes, Fábio de Lima Leite, Marystela Ferreira   +4 more
doaj   +1 more source

Investigation of the Synergistic Effect of Layer-by-Layer Films of Carbon Nanotubes and Polypyrrole on a Flexible Electrochemical Device for Paraquat Sensing

Chemosensors, 2023
This research aims to study flexible sensors based on a poly(butylene adipate-co-terephthalate) (PBAT) biodegradable polymer and graphite. Sensors were modified through the layer-by-layer (LbL) technique to improve their electrochemical behavior for ...
Stefanny F. Amaro, Cristiane C. Maciel, Jéssica S. Rodrigues, Amanda de S. M. de Freitas, Lucas V. B. V. Fré, Anerise de Barros, Marystela Ferreira   +6 more
doaj   +1 more source

A Preliminary Study for Tunable Optical Assessment of Exhaled Breath Ammonia Based on Ultrathin Tetrakis(4-sulfophenyl)porphine Nanoassembled Films

Chemosensors, 2021
The detection of chemical substances excreted from the human body offers an attractive approach for non-invasive, early diagnostics of certain diseases.
Sergiy Korposh, Seung-Woo Lee
doaj   +1 more source

Construction and Properties of Alginate-based Trilayer Composite Film Loaded with β-Lactoglobulin Nanoparticles

Shipin gongye ke-ji, 2023
In this work, a trilayer composite film of alginate-polyvinylpyrrolidone-alginate loaded with β-lactoglobulin nanoparticles was prepared based on the layer-by-layer assembly.
Wenting FAN, Kangjing LI, Jie SONG, Zihan JIANG, Haotian XU, Junxiang ZHU, Hao WU   +6 more
doaj   +1 more source

Inkjet Deposition of Layer-by-Layer Assembled Films [PDF]

Journal of the American Chemical Society, 2010
Layer-by-layer assembly (LBL) can create advanced composites with exceptional properties unavailable by other means, but the laborious deposition process and multiple dipping cycles hamper their utilization in microtechnologies and electronics. Multiple rinse steps provide both structural control and thermodynamic stability to LBL multilayers, but they
Christine M, Andres, Nicholas A, Kotov
openaire   +2 more sources

Intelligent H2S release coating for regulating vascular remodeling

Bioactive Materials, 2021
Coronary atherosclerotic lesions exhibit a low-pH chronic inflammatory response. Due to insufficient drug release control, drug-eluting stent intervention can lead to delayed endothelialization, advanced thrombosis, and unprecise treatment. In this study,
Bingyang Lu, Xiao Han, Ansha Zhao, Dan Luo, Manfred F. Maitz, Haohao Wang, Ping Yang, Nan Huang   +7 more
doaj   +1 more source

Magnetoresistive Properties of Multilayer Film Systems Based on Permalloy and Silver

Фізика і хімія твердого тіла, 2021
In this paper, the experimental investigation focuses on the magnetoresistive properties of nanosized film systems. Their structure changes from layered to granular due to transition from bilayer FM/NM (FM is a ferromagnetic material, NM is a nonmagnetic
I.M. Pazukha, D.O. Shuliarenko, S.R. Dolgov-Gordiichuk, L.V. Odnodvorets   +3 more
doaj   +1 more source

Preparation and Properties of Blended Composite Film Manufactured Using Walnut-Peptide–Chitosan–Sodium Alginate

Foods, 2022
In this study, layer-by-layer assembly was performed to prepare sodium alginate (SA) layer and walnut-peptide–chitosan (CS) bilayer composite films. Genipin was adopted to crosslink CS and walnut peptide.
Wenqi Yan, Haochen Sun, Wenxin Liu, Hao Chen   +3 more
doaj   +1 more source

Polyelectrolyte Multilayers Composed of Polyethyleneimine-Grafted Chitosan and Polyacrylic Acid for Controlled-Drug-Delivery Applications

Journal of Functional Biomaterials, 2022
In this work, polyethyleneimine (PEI)-grafted chitosan (Chi-g-PEI) was prepared for the fabrication of layer-by-layer (LBL) films for use in sustained-drug-delivery applications. Chi-g-PEI and polyacrylic acid (PAA) multilayer films were formed using the
Eliz Selmin Paker, Mehmet Senel
doaj   +1 more source