Novel anodic aluminum oxide (AAO) nanoporous membrane for wearable hemodialysis device

Khan, Kasi Ajab; Kasi, Jafar Khan; Afzulpurkar, Nitin; Bohez, Erik L. J.; Tuantranont, Adisorn; Mahaisavariya, Banchong

doi:10.1109/icce.2010.5670689

Cited by 8 publications

(5 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fabrication of AAO templates.-Nanoporous AAO templates were prepared by using a two-step hard anodization process 28,29 of 250 μm thick, high purity (99.99%) aluminum foils (Alfa Aesar, Tewksbury, MA). Prior to anodization, aluminum foils were cleaned and degreased in acetone and alcohol by ultrasonic cleaning, followed by deionized water rinse.…”

Section: Methodsmentioning

confidence: 99%

Heterogeneous Integrated MEMS Enabled by AAO Process Technologies

Yildirim

Bachman³

2016

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

An alternative approach to fabricate specialty MEMS devices by heterogeneous integration of dissimilar materials such as PCB substrates and neodymium magnets with anodic aluminum oxide (AAO) templates was demonstrated. The importance of the use of copper metal as an intermediate layer for wet chemical etching of AAO templates in order to release MEMS devices was presented. The assembling of dissimilar materials before the final wet chemical etch and release was introduced which is not possible with standard MEMS micromachining processes. The unique anisotropic etching feature, excellent dielectric with good mechanical properties, low cost, and compatibility with other materials and processes make AAO an attractive candidate material and process for manufacturing microdevices for many MEMS applications.

show abstract

Section: Methodsmentioning

confidence: 99%

Heterogeneous Integrated MEMS Enabled by AAO Process Technologies

Yildirim

Bachman³

2016

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…The temperature during elctropolishing was constant at 4 o C. After electropolishing cleaning operation was repeated. The anodization was carried in a setup having two electrodes with strong cooling coil and magnetic stirrer to maintain electrolyte temperature, concentration and flow as reported by Kasi et al [25]. The sample was attached to anode while lead sheet was used as cathode.…”

Section: Methodsmentioning

confidence: 99%

Fabrication of Thinner Anodic Aluminum Oxide Based Microchannels

Hasan

Kasi

et al. 2012

AMR

Self Cite

View full text Add to dashboard Cite

When thickness of a membrane reduces its mechanical properties go down but thinner the membrane better the performance of the membrane in terms of filtration. In this research we fabricated a fluid filtration system with a very thin anodic aluminum oxide (AAO) membrane. The system consists of microchannels at one side of membrane while other side is flat. For both sides inlet and outlet are given. The system can facilitate two types of fluid to flow at two sides of membrane for filtration. The membrane thickness achieved was 4 μm. The average pore diameter was 50 nm. The nanopores inside the membrane are highly straight and perpendicular to the surface. The fabricated channel and wall width was 200 µm and 100 µm successively. The pillars in between microchannels hold the membrane which is termed as partial freestanding alumina (PFA) and thereby retain desired mechanical properties of the membrane. The system was tested for diffusion between DI water and salted water. The DI water was flowed in channels and salted water on other side of membrane. The pH value of DI water changed after flow. Due to channel walls, AAO membrane fabricated in this system can tolerate more pressure which leads it to be used for convective flow by applying higher pressure gradient.

show abstract

“…An adaptive ultrafiltration layer has been designed using an AAO template in polyprotic to provide filtration properties and used for desoxyribonucleic acid analysis [104]. Two-layered AAO has also been reported to speed up the hemodialysis and hemofiltration process [105]. Two-layered AAO membrane structures have been used for effective dialysis and to sieve exosomes, potential biomarkers for the early detection of cancerous cells [106].…”

Section: Aao Membrane For Filtration 321 Applications Of Aao Membrane...mentioning

confidence: 99%

Recent Progress of Fabrication, Characterization, and Applications of Anodic Aluminum Oxide (AAO) Membrane: A Review

Manzoor¹,

Ashraf²,

Tayyaba³

et al. 2023

Computer Modeling in Engineering &Amp; Sciences

View full text Add to dashboard Cite

The progress of membrane technology with the development of membranes with controlled parameters led to porous membranes. These membranes can be formed using different methods and have numerous applications in science and technology. Anodization of aluminum in this aspect is an electro-synthetic process that changes the surface of the metal through oxidation to deliver an anodic oxide layer. This process results in a self-coordinated, exceptional cluster of round and hollow formed pores with controllable pore widths, periodicity, and thickness. Categorization in barrier type and porous type films, and different methods for the preparation of membranes, have been discussed. After the initial introduction, the paper proceeds with a brief overview of anodizing process. That engages anodic aluminum oxide (AAO) layers to be used as formats in various nanotechnology applications without the necessity for expensive lithographical systems. This review article surveys the current status of the investigation on AAO membranes. A comprehensive analysis is performed on AAO membranes in applications; filtration, sensors, drug delivery, template-assisted growth of various nanostructures. Their multiple usages in nanotechnology have also been discussed to gather nanomaterials and devices or unite them into specific applications, such as nano-electronic gadgets, channel layers, and clinical platforms tissue designing. From this review, the fact that the specified enhancement of properties of AAO can be done by varying geometric parameters of AAO has been highlighted. No review paper focused on a detailed discussion of multiple applications of AAO with prospects and challenges. Also, it is a challenge for the research community to compare results reported in the literature. This paper provides tables for easy comparison of reported applications with membrane parameters. This review paper represents the formation, properties, applications with objective consideration of the prospects and challenges of AAO applications. The prospects may appeal to researchers to promote the development of unique membranes with functionalization and controlled geometric parameters and check the feasibility of the AAO membranes in nanotechnology and devices.

show abstract

Novel anodic aluminum oxide (AAO) nanoporous membrane for wearable hemodialysis device

Cited by 8 publications

References 14 publications

Heterogeneous Integrated MEMS Enabled by AAO Process Technologies

Heterogeneous Integrated MEMS Enabled by AAO Process Technologies

Fabrication of Thinner Anodic Aluminum Oxide Based Microchannels

Recent Progress of Fabrication, Characterization, and Applications of Anodic Aluminum Oxide (AAO) Membrane: A Review

Contact Info

Product

Resources

About