Pervaporation-assisted in situ formation of nanoporous microchannels with various material and structural properties

Abstract

Nanoporous structures are crucial for developing mixed-scale micro-/nanofluidic devices because they facilitate the manipulation of molecule transport along the microfluidic channel networks. Particularly, self-assembled particles have been used for fabricating...

Programmable and Pixelated Solute Concentration Fields Controlled by Three-Dimensionally Networked Microfluidic Source/Sink Arrays

“…By contrast, our MTF features 3D structures, including stepped channels and through-holes, and enables construction of deterministic places where the SAPMs array can be configured into any point, linear, and planar format with the 3D connection to additional control microchannels in different layers. While we exclusively employed SiO 2 particles to fabricate the device, our demonstration of SAPM integration with other particles like Au and PS implies that we can tailor the optical, electrical, mechanical, and chemical properties of SAPMs such as surface charges, functional groups, pore sizes, and conductivity, making SAPMs suitable for a wide range of applications . Moreover, various types of functional liquid-mediated building materials, such as nanomaterials, Nafion, hydrogels, organic semiconductors, can be used to form SAPMs based on different property requirements …”

“…While we exclusively employed SiO 2 particles to fabricate the device, our demonstration of SAPM integration with other particles like Au and PS implies that we can tailor the optical, electrical, mechanical, and chemical properties of SAPMs such as surface charges, functional groups, pore sizes, and conductivity, making SAPMs suitable for a wide range of applications. 44 Moreover, various types of functional liquid-mediated building materials, such as nanomaterials, Nafion, hydrogels, organic semiconductors, can be used to form SAPMs based on different property requirements. 45 Capable of programmable control of various solute concentration fields, the 2D-MSA may serve as a versatile platform for experimenting with various studies related to solute concentration fields, which is analogous to other pixelated systems such as the light-emitting diode arrays for displays and microelectrode arrays for 2D electric fields.…”

Biogenesis, Isolation, and Detection of Exosomes and Their Potential in Therapeutics and Diagnostics

“…In another study, Ye et al [ 100 ] used a microfluidic platform with protein chips in order to facilitate the separation and detection of exosomes [ 106 , 107 ]. Zeng et al [ 108 ] utilized the microfluidic chip technique, combining it with a self-assembled three-dimensional herpet-shaped nanoplatform to capture and separate exosomes sourced from tumor cells, improving the separation efficiency of the process by several fold. Ding et al [ 109 ] prepared a novel magnetic nanowaxberry (MNWB) microfluidic chip (EXoSIC) biosensor to efficiently isolate exosomes.…”

Gas transport mechanisms through gas-permeable membranes in microfluidics: A perspective

“…4(d)]. 40 The particle assemblies exhibit a porous structure that enables solvent penetration, thereby ensuring that the evaporation area remains constant. As a result, the assembly rate remains rapid even as the particle assembly grows and occupies a larger volume.…”

“…Then, the particle assembly served as a homogeneous/heterogeneous nanoporous membrane whose pore properties are determined by the particle properties, including pore size, functional group, and wettability. This methodology of particle assembly has been employed for several applications, including transport control of small molecules, 40 solidification of colloidal dispersion, 90 and plasmonic supercrystals. 91 In addition, condensation offers reverse working principles of pervaporation, and water supply through a GPM can be leveraged to collect water from the environment.…”