Ultrafast Microdroplet Generation and High-Density Microparticle Arraying Based on Biomimetic Nepenthes Peristome Surfaces.
ACS Appl Mater Interfaces
; 12(42): 47299-47308, 2020 Oct 21.
Article
in En
| MEDLINE
| ID: mdl-33032397
ABSTRACT
Manipulation of massive droplets, particles, as well as cells has enabled wide applications. However, most existing technologies require complicated processes, operations, or external setup. This article demonstrates the employment of biomimetic Nepenthes peristome surfaces (NPS) in achieving ultrafast microdroplet generation and high-density microparticle arraying, with the assistance of curvature-induced Laplace pressure in slipping mode and evaporation-driven Marangoni effect in climbing mode, respectively. Different wetting phenomena on the biomimetic NPS were observed under variable contact angles and tilting angles, strongly affecting the microdroplet generation and microparticle array. As the optimal results, 5 µm-size microparticles were arrayed with 85% coverage rate in 65 s and 20 µm-size microdroplets were arrayed with 100% coverage rate in 3 s. In this study, this well-designed bionic surface shows excellent performances as an ultrafast, universal, and straightforward approach to capture and array micro-objects in aqueous solutions for various biological and chemical analyses.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
C-Reactive Protein
/
Biomimetic Materials
/
Microfluidic Analytical Techniques
/
Single-Cell Analysis
Limits:
Humans
Language:
En
Journal:
ACS Appl Mater Interfaces
Journal subject:
BIOTECNOLOGIA
/
ENGENHARIA BIOMEDICA
Year:
2020
Document type:
Article
Affiliation country:
China