Results 51 to 60 of about 115,231 (195)

Dynamical density functional theory for the evaporation of droplets of nanoparticle suspension [PDF]

open access: yes, 2017
We develop a lattice gas model for the drying of droplets of a nanoparticle suspension on a planar surface, using dynamical density functional theory (DDFT) to describe the time evolution of the solvent and nanoparticle density profiles. The DDFT assumes
A.J. Archer   +9 more
core   +2 more sources

Active Matter Alters the Growth Dynamics of Coffee Rings

open access: yes, 2018
How particles are deposited at the edge of evaporating droplets, i.e. the {\em coffee ring} effect, plays a crucial role in phenomena as diverse as thin-film deposition, self-assembly, and biofilm formation.
Brown   +7 more
core   +3 more sources

Programmable nanoparticle patterning by droplet electrophoretic deposition

open access: yesJournal of Materials Research and Technology, 2021
Here, we demonstrated the printing of a circular pattern of 200 nm nanoparticles by droplet electrophoretic deposition (EPD). For programming the deposition of the pattern, the circular electrode array circuit was designed on a printed circuit board (PCB) based on a polyimide substrate. A 5 μl 200 nm fluorescent nanoparticle suspension (Ex. 505/Em. 515)
Doyeon Lim, Seunghwan Noh, Youngjun Song
openaire   +2 more sources

Research on a UAV spray system combined with grid atomized droplets

open access: yesFrontiers in Plant Science
BackgroundsUAVs for crop protection hold significant potential for application in mountainous orchard areas in China. However, certain issues pertaining to UAV spraying need to be addressed for further technological advancement, aimed at enhancing crop ...
Xiuyun Xue   +19 more
doaj   +1 more source

Analysis of the research progress on the deposition and drift of spray droplets by plant protection UAVs

open access: yesScientific Reports, 2023
Plant protection unmanned aerial vehicles (UAVs), which are highly adapted to terrain and capable of efficient low-altitude spraying, will be extensively used in agricultural production.
Qin Weicai, Chen Panyang
doaj   +1 more source

Effects of Adjuvants on Spraying Characteristics and Control Efficacy in Unmanned Aerial Application

open access: yesAgriculture, 2022
Pesticide application by unmanned agricultural aerial vehicles (UAVs) has rapidly developed in China and other Asian counties. Currently, tank-mix spray adjuvants are usually added into pesticide solutions to reduce spray drift and facilitate droplet ...
Shilin Wang   +6 more
doaj   +1 more source

Dynamic wetting and heat transfer during droplet impact on heated bi-phobic wettability-patterned surfaces

open access: yes, 2020
This paper reports the dynamic wetting behavior and heat transfer characteristics for impinging droplets on heated bi-phobic surfaces (superhydrophobic matrix with hydrophobic spots).
Qi, Wenliang, Weisensee, Patricia B.
core   +1 more source

Material Issues in Layered Forming [PDF]

open access: yes, 1993
A brief overview of key issues in layered thermal processing is given. Incremental sintering and layered fusion ofpowder and molten droplets are discussed.
Amon, Christina   +6 more
core   +1 more source

Study on Spray Deposition Effect of a New High-Clearance Air-Assisted Electrostatic Sprayer

open access: yesAgriculture
This study evaluates the performance of a novel high-clearance air-assisted electrostatic sprayer designed for vineyards and investigates the impact of applied voltage on droplet deposition.
Mingxiong Ou   +6 more
doaj   +1 more source

Acoustic suppression of the coffee-ring effect [PDF]

open access: yes, 2015
We study the influence of acoustic fields on the evaporative self-assembly of solute particles suspended inside sessile droplets of complex fluids. The self-assembly process often results in an undesirable ring-like heterogeneous residue, a phenomenon ...
Cooper, JM   +5 more
core   +1 more source

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