Simultaneous evaluation of toxicities using a mammalian cell array chip prepared by photocatalytic lithography

Komori, Kikuo; Nada, Jun; Nishikawa, Masaki; Notsu, Hideo; Tatsuma, Tetsu; Sakai, Yasuyuki

doi:10.1016/j.aca.2009.09.013

Cited by 7 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Examples of more sophisticated applications of photocatalytically-produced wettability patterns include the development of multiscale chemical gradients [26], the patterning of thin oxide films [27], the formation of patterns for the immobilization of algae [28], and mammalian cells [29].…”

Section: Patterning Of Self-assembled Monolayers and Generation Of Sumentioning

confidence: 99%

Photocatalytic Lithography

Panzarasa

Soliveri

2019

Applied Sciences

View full text Add to dashboard Cite

Patterning, the controlled formation of ordered surface features with different physico-chemical properties, is a cornerstone of contemporary micro- and nanofabrication. In this context, lithographic approaches owe their wide success to their versatility and their relative ease of implementation and scalability. Conventional photolithographic methods require several steps and the use of polymeric photoresists for the development of the desired pattern, all factors which can be deleterious, especially for sensitive substrates. Efficient patterning of surfaces, with resolution down to the nanometer scale, can be achieved by means of photocatalytic lithography. This approach is based on the use of photocatalysts to achieve the selective chemical modification or degradation of self-assembled monolayers, polymers, and metals. A wide range of photoactive compounds, from semiconducting oxides to porphyrins, have been demonstrated to be suitable photocatalysts. The goal of the present review is to provide a comprehensive state-of-the-art photocatalytic lithography, ranging from approaches based on semiconducting oxides to singlet oxygen-based lithography. Special attention will be dedicated to the results obtained for the patterning of polymer brushes, the sculpturing of metal nanoparticle arrays, and the patterning of graphene-based structures.

show abstract

Section: Patterning Of Self-assembled Monolayers and Generation Of Sumentioning

confidence: 99%

Photocatalytic Lithography

Panzarasa

Soliveri

2019

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…For instance, Namib Desert Stenocara beetles use alternating hydrophilic bumps and superhydrophobic channels on the back to collect drinking water from fog‐laden wind . The difference in wettability between hydrophilic and hydrophobic regions can be used for patterning water‐soluble or water‐dispersed materials, including inorganic salt, nanoparticles, proteins, and cells . Hydrophilic‐hydrophobic patterning also plays a vital role in “printed electronics,” since the hydrophilic region in a hydrophobic substrate helps define the functional inks to achieve sufficient resolution .…”

Section: Introductionmentioning

confidence: 99%

Patterned polymer surfaces with wetting contrast prepared by polydopamine modification

Zhang

Zhao

et al. 2014

J of Applied Polymer Sci

View full text Add to dashboard Cite

Patterned polymer surfaces with contrasting wettability are prepared by polydopamine (PD) modification. The fabrication process involves spraying dopamine solution droplets on hydrophobic polymer surfaces and PD deposition derived from the oxidative polymerization of dopamine. Each dopamine solution droplets functions as microreactor leading to the formation of patterned PD thin films on the solid/liquid interfaces. Multiple kinds of polymer substrates, including polypropylene, polystyrene, polycarbonate, polyethylene and polytetrafluoroethylene, are endowed with PD patterns using this method. Two types of wetting behaviors are achieved in relation to the micro morphology of the substrates. If smooth or porous substrates are used, the as‐formed film exhibited hydrophilic‐hydrophobic pattern. When a hierarchical‐structured film is used, the uncoated and coated regions have similar static wettability but different dynamic wetting behavior. This PD modification method is also proved to be suitable for flexible and curved surfaces. The results along with the fact that PD could deposit on virtually any surfaces makes this method find wide practical applications in many fields. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 41057.

show abstract

“…Methods to control homotypic cell adherence have been reported, including the generation of cellresistant or cell-affinitive surfaces by selective chemical modification of the substrate. 5,6 After the surface of the substrate is selectively modified, the cells are confined only at the cell-affinitive areas to form a microarray. Such methods are useful for making homotypic and passive cell arrays, but only one type of cell can be used in each assay.…”

Section: Introductionmentioning

confidence: 99%

The construction of an individually addressable cell array for selective patterning and electroporation

Yao

Wang

et al. 2011

Lab Chip

View full text Add to dashboard Cite

In basic cell biology research and drug discovery, it is important to rapidly introduce genes, proteins or drug compounds into cells without permanent damage. Here, we report a three dimensional SU-8 micro-well structure sandwiched with an indium tin oxide (ITO) electrode-covered slide from the top and an individually addressable array of microelectrodes on the bottom to allow parallel delivery of exogenous molecules into various cells in a spatially specific manner. A positive dielectrophoretic force was selectively applied by energizing appropriate electrodes to capture the dispersed cells at the bottom electrode, while the micro-wells were designed to confine cells in situ when the positive dielectrophoretic force is removed. The combination of spatial positive dielectrophoresis (pDEP) and micro-wells made it possible to construct cell microarrays with specific patterns. Once the cells become attached to the electrodes, different plasmids can be introduced sequentially for selective electroporation. The present cell arraying-assisted electroporation chip integrates a pDEP-assisted cell positioning function with selective electroporation to provide a simple and efficient method for gene transfer. This platform is ideal for high throughput screening of compounds in parallel and thus holds promise for applications in cellular and molecular research.

show abstract

Simultaneous evaluation of toxicities using a mammalian cell array chip prepared by photocatalytic lithography

Cited by 7 publications

References 36 publications

Photocatalytic Lithography

Photocatalytic Lithography

Patterned polymer surfaces with wetting contrast prepared by polydopamine modification

The construction of an individually addressable cell array for selective patterning and electroporation

Contact Info

Product

Resources

About