Evaporation characteristics of light-induced nanofluid droplets on hydrophobic surfaces

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-03-11 DOI:10.1016/j.powtec.2025.120918

Chenjun Huang , Jinxin Zhang , Caiyi Xiong , Haoxiang Wei , Xiaorong Wang , Genzhu Jiang

{"title":"Evaporation characteristics of light-induced nanofluid droplets on hydrophobic surfaces","authors":"Chenjun Huang , Jinxin Zhang , Caiyi Xiong , Haoxiang Wei , Xiaorong Wang , Genzhu Jiang","doi":"10.1016/j.powtec.2025.120918","DOIUrl":null,"url":null,"abstract":"<div><div>Microfluidic applications under light conditions are utilized, particularly in biomedicine, chemical reactions, and sensing technologies. However, the influence of light on fluid dynamics, heat transfer, and mass transfer remains insufficiently explored, and its potential for optimizing microfluidic system performance has not been comprehensively examined. In this work, the evaporation kinetics of nanofluid droplets on superhydrophobic surfaces induced by light illumination was visually investigated. The superhydrophobic surfaces were prepared on three kinds of metal surfaces by laser scanning technique and chemical modification. The effects of metal materials and surface modification treatments on surface morphology, surface wettability and photothermal conversion properties were analyzed. The evaporation morphology and deposition pattern of nanofluid droplet on different superhydrophobic surfaces were experimentally investigated. The results showed that due to nanofluids and micro-nanostructures, evaporation process of nanofluid droplet on the superhydrophobic surface under light illumination was divided into three stages: constant contact angle (CCA), constant contact radius (CCR), and mixed mode. Non-uniform micro-nanostructures reduces evaporation time of nanofluid droplet under light illumination. The droplet vibration phenomenon and nanoparticle deposition patterns indicate that light can inhibit the coffee ring effect. This work can provide a theoretical basis for nanofluid evaporation manipulation.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"457 ","pages":"Article 120918"},"PeriodicalIF":4.5000,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Powder Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0032591025003134","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Microfluidic applications under light conditions are utilized, particularly in biomedicine, chemical reactions, and sensing technologies. However, the influence of light on fluid dynamics, heat transfer, and mass transfer remains insufficiently explored, and its potential for optimizing microfluidic system performance has not been comprehensively examined. In this work, the evaporation kinetics of nanofluid droplets on superhydrophobic surfaces induced by light illumination was visually investigated. The superhydrophobic surfaces were prepared on three kinds of metal surfaces by laser scanning technique and chemical modification. The effects of metal materials and surface modification treatments on surface morphology, surface wettability and photothermal conversion properties were analyzed. The evaporation morphology and deposition pattern of nanofluid droplet on different superhydrophobic surfaces were experimentally investigated. The results showed that due to nanofluids and micro-nanostructures, evaporation process of nanofluid droplet on the superhydrophobic surface under light illumination was divided into three stages: constant contact angle (CCA), constant contact radius (CCR), and mixed mode. Non-uniform micro-nanostructures reduces evaporation time of nanofluid droplet under light illumination. The droplet vibration phenomenon and nanoparticle deposition patterns indicate that light can inhibit the coffee ring effect. This work can provide a theoretical basis for nanofluid evaporation manipulation.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.