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Direct Laser Writing (direct + laser_writing)
Selected AbstractsDirect Laser Writing of Nanoscale Light-Emitting DiodesADVANCED MATERIALS, Issue 29 2010Oleg Makarovsky Nanoscale light-emitting diodes (nanoLEDs) and arrays of nanoLEDs produced by laser controlled diffusion of interstitial manganese (Mni) donor ions out of the ferromagnetic semiconductor (GaMn)As towards the underlying layers of a quantum well heterostructure. The approach represents an alternative to deep etching for the creation of nanoscale current channels and nanoLEDs. [source] Fluorescent Nanostructures: Direct Laser Writing of Nanosized Oligofluorene Truxenes in UV-Transparent Photoresist Microstructures (Adv. Mater.ADVANCED MATERIALS, Issue 7 20097/2009) Fluorescent nanostructures within a transparent microstructure can be achieved via direct laser writing. On p. 781, Alexander Kuehne, Peter Skabara, Martin Dawson, Richard Pethrick, and co-workers report on a novel UV-transparent photoresist that incorporates star-shaped nanometer-sized oligofluorene truxenes. The method and materials will find applications in optical, electro-optical, and photonic devices. (Cover artwork by Leif Heuser). [source] Laser Writing: Direct Laser Writing of Photoresponsive Colloids for Microscale Patterning of 3D Porous Structures (Adv. Mater.ADVANCED MATERIALS, Issue 1 20091/2009) On pg. 66, Paul Braun and co-workers report the use of direct laser writing to pattern porous 3D structures from photo-responsive colloidal building blocks. Upon 2-photon exposure, the colloids become highly attractive, enabling localized control of aggregation behavior. 3D structures composed of porous walls are harvested by writing into a colloidal sediment of these particles, followed by rinsing away unexposed colloidal species. Applications may include microfluidics, and studies of porous media, cellular growth and signaling, and colloidal physics. Cover art by Steven Eisenmann of the Beckman Institute VMIL. [source] Direct Laser Writing of Photoresponsive Colloids for Microscale Patterning of 3D Porous Structures,ADVANCED MATERIALS, Issue 1 2009Matthew C. George 3D patterning of colloidal structures is enabled by the phototriggered aggregation of photoresponsive colloids. We use direct laser writing to locally control aggregation behavior of photoresponsive colloids via a 2-photon absorption process. 3D structures composed of porous walls are harvested after rinsing away unexposed colloidal species. Aggregation is fully reversible with sufficient agitation. [source] Photonic Crystals: Three-Dimensional Nanostructures for Photonics (Adv. Funct.ADVANCED FUNCTIONAL MATERIALS, Issue 7 2010Mater. Over the last decade, direct laser writing via two-photon absorption turned from a laboratory curiosity into a versatile technique for the fabrication of 3D nano-and microstructures. Especially, in the field of nanophotonics novel structures could be fabricated and tested for agreement with theory. G. von Freymann and co-workers review recent progress in the field on page 1038. The cover image displays a potpourri of complex 3D nanostructures for photonics. Cover artwork by M. S. Rill. [source] Three-Dimensional Nanostructures for PhotonicsADVANCED FUNCTIONAL MATERIALS, Issue 7 2010Georg von Freymann Abstract Recent progress in direct laser writing of three-dimensional (3D) polymer nanostructures for photonics is reviewed. This technology has reached a level of maturity at which it can be considered as the 3D analogue of planar electron-beam lithography. Combined with atomic-layer deposition and/or chemical-vapor deposition of dielectrics,the 3D analogues of planar evaporation technologies, the 3D polymer templates can be converted or inverted into 3D high-refractive-index-contrast nanostructures. Examples discussed in this review include positive and inverse 3D silicon-based woodpile photonic crystals possessing complete photonic bandgaps, novel optical resonator designs within these structures, 3D chiral photonic crystals for polarization-state manipulation, and 3D icosahedral photonic quasicrystals. The latter represent a particularly complex 3D nanostructure. [source] 3D Bi-chiral Photonic Crystals: Three-Dimensional Bi-Chiral Photonic Crystals (Adv. Mater.ADVANCED MATERIALS, Issue 46 200946/2009) Bi-chiral photonic crystals are tailored man-made solids inspired by blue-phase cholesteric liquid crystals. They possess two types of chirality, leading to four different types of bi-chiral structures. In naturally occurring blue-phase liquid crystals, only two of these are thermodynamically stable. On p. 4680, Michael Thiel and co-workers fabricate all four via direct laser writing. [source] Fluorescent Nanostructures: Direct Laser Writing of Nanosized Oligofluorene Truxenes in UV-Transparent Photoresist Microstructures (Adv. Mater.ADVANCED MATERIALS, Issue 7 20097/2009) Fluorescent nanostructures within a transparent microstructure can be achieved via direct laser writing. On p. 781, Alexander Kuehne, Peter Skabara, Martin Dawson, Richard Pethrick, and co-workers report on a novel UV-transparent photoresist that incorporates star-shaped nanometer-sized oligofluorene truxenes. The method and materials will find applications in optical, electro-optical, and photonic devices. (Cover artwork by Leif Heuser). [source] Laser Writing: Direct Laser Writing of Photoresponsive Colloids for Microscale Patterning of 3D Porous Structures (Adv. Mater.ADVANCED MATERIALS, Issue 1 20091/2009) On pg. 66, Paul Braun and co-workers report the use of direct laser writing to pattern porous 3D structures from photo-responsive colloidal building blocks. Upon 2-photon exposure, the colloids become highly attractive, enabling localized control of aggregation behavior. 3D structures composed of porous walls are harvested by writing into a colloidal sediment of these particles, followed by rinsing away unexposed colloidal species. Applications may include microfluidics, and studies of porous media, cellular growth and signaling, and colloidal physics. Cover art by Steven Eisenmann of the Beckman Institute VMIL. [source] Direct Laser Writing of Photoresponsive Colloids for Microscale Patterning of 3D Porous Structures,ADVANCED MATERIALS, Issue 1 2009Matthew C. George 3D patterning of colloidal structures is enabled by the phototriggered aggregation of photoresponsive colloids. We use direct laser writing to locally control aggregation behavior of photoresponsive colloids via a 2-photon absorption process. 3D structures composed of porous walls are harvested after rinsing away unexposed colloidal species. Aggregation is fully reversible with sufficient agitation. [source] | ||||||||||