Background and survey of bioreplication techniques

Pulsifer, Drew P.; Lakhtakia, Akhlesh

doi:10.1088/1748-3182/6/3/031001

Cited by 55 publications

(36 citation statements)

References 74 publications

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“…However, they can be also adjusted and controlled by means of machining processes, chemical etchings, and post-processing tools along the product development cycle. Several strategies for modifying material topographies and surface properties (towards hierarchical materials, structures, and multi-scale devices) have made use of conventional surface micromachining [12], laser ablation [13], micromolding [14], biomimetic templating [15], thin film deposition processes based on physical or chemical vapor deposition [16], sol-gel procedures [17], molecular self-assembly [18], and electro-spinning [19][20][21]. All these procedures require an expertise that is sometimes difficult to achieve and repeatability is not easy [22,23].…”

Section: Introductionmentioning

confidence: 99%

Multi-Channeled Polymeric Microsystem for Studying the Impact of Surface Topography on Cell Adhesion and Motility

2015

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This paper presents the complete development and experimental validation of a microsystem designed to systematically assess the impact of surface topography on cell adhesion and dynamics. The microsystem includes two pools for culturing cells and for including chemicals. These pools are connected by several channels that have different microtextures, along which the cells crawl from one well to another. The impact of channel surface topography on cell performance, as well as the influence of other relevant factors, can therefore be assessed. The microsystem stands out for its being able to precisely define the surface topographies from the design stage and also has the advantage of including the different textures under study in a single device. Validation has been carried out by culturing human mesenchymal stem cells (hMSCs) on the microsystem pre-treated with a coating of hMSC conditioned medium (CM) produced by these cells. The impact of surface topography on cell adhesion, motility, and velocity has been quantified, and the relevance of using a coating of hMSC-CM for these kinds of studies has been analyzed. Main results, current challenges, and future proposals based on the use of the proposed microsystem as an experimental resource for studying cell mechanobiology are also presented.

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Section: Introductionmentioning

confidence: 99%

Multi-Channeled Polymeric Microsystem for Studying the Impact of Surface Topography on Cell Adhesion and Motility

2015

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“…The natural world, both living and mineral, contains many nanodesigns, which can be reconstructed or replicated artificially [93][94][95] to achieve a similar outdoor response to environmental radiation. Many evolved for survival, and utilized the chemical, thermal and fluidic conditions available in the local environment during particular epochs, so can be improved upon.…”

Section: Mimicking Natural Nanostructuresmentioning

confidence: 99%

Nanophotonics-enabled smart windows, buildings and wearables

Smith¹,

Gentle²,

Arnold³

et al. 2016

Nanophotonics

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Design and production of spectrally smart windows, walls, roofs and fabrics has a long history, which includes early examples of applied nanophotonics. Evolving nanoscience has a special role to play as it provides the means to improve the functionality of these everyday materials. Improvement in the quality of human experience in any location at any time of year is the goal. Energy savings, thermal and visual comfort indoors and outdoors, visual experience, air quality and better health are all made possible by materials, whose "smartness" is aimed at designed responses to environmental energy flows. The spectral and angle of incidence responses of these nanomaterials must thus take account of the spectral and directional aspects of solar energy and of atmospheric thermal radiation plus the visible and color sensitivity of the human eye. The structures required may use resonant absorption, multilayer stacks, optical anisotropy and scattering to achieve their functionality. These structures are, in turn, constructed out of particles, columns, ultrathin layers, voids, wires, pure and doped oxides, metals, polymers or transparent conductors (TCs). The need to cater for wavelengths stretching from 0.3 to 35 µm including ultraviolet-visible, near-infrared (IR) and thermal or Planck radiation, with a spectrally and directionally complex atmosphere, and both being dynamic, means that hierarchical and graded nanostructures often feature. Nature has evolved to deal with the same energy flows, so biomimicry is sometimes a useful guide.

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“…Bioreplication is the latest methodology in engineered biomimicry, having arrived on the scene just about a decade ago [3]. Its potential application for solar-energy harvesting is based on two observations [38].…”

Section: Bioreplicationmentioning

confidence: 99%

“…Email: raul@psu.edu clear [2]. Bioreplication [3], the latest methodology in engineered biomimicry, is the direct replication of the responsible biological structure.…”

Section: Introductionmentioning

confidence: 99%

Engineered biomimicry for harvesting solar energy: a bird's eye view

Martín-Palma

Lakhtakia

2013

International Journal of Smart and Nano Materials

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All three methodologies of engineered biomimicry -bioinspiration, biomimetics, and bioreplication -are represented in current research on harvesting solar energy. Both processes and porous surfaces inspired by plants and certain marine animals, respectively, are being investigated for solar cells. Whereas dye-sensitized solar cells deploy artificial photosynthesis, bioinspired nanostructuring of materials in solar cells improves performance. Biomimetically textured coatings for solar cells have been shown to reduce optical reflectance and increase optical absorptance over a broad spectral regime. Compound lenses fabricated by a bioreplication technique offer similar promise for reduced reflectance by increasing the angular field of view.

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Background and survey of bioreplication techniques

Cited by 55 publications

References 74 publications

Multi-Channeled Polymeric Microsystem for Studying the Impact of Surface Topography on Cell Adhesion and Motility

Multi-Channeled Polymeric Microsystem for Studying the Impact of Surface Topography on Cell Adhesion and Motility

Nanophotonics-enabled smart windows, buildings and wearables

Engineered biomimicry for harvesting solar energy: a bird's eye view

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