The Experts below are selected from a list of 14811 Experts worldwide ranked by ideXlab platform
Lorraine F. Francis - One of the best experts on this subject based on the ideXlab platform.
-
high resolution high aspect ratio printed and plated metal Conductors utilizing roll to roll microscale uv imprinting with prototype imprinting stamps
Industrial & Engineering Chemistry Research, 2018Co-Authors: Krystopher S. Jochem, Wieslaw J. Suszynski, Daniel C. Frisbie, Lorraine F. FrancisAbstract:Micron-scale, high-aspect-ratio features were imprinted by a roll-to-roll process into a UV-curable polymer and used to create high-current-carrying conductive networks on plastic substrates. A stamp fabrication method was developed to create low-cost, rapidly produced roll-to-roll imprinting stamps, which can mold features from 3 μm to 1 mm wide. Isolated raised features 50 μm high were molded from a 25-μm-thick layer of UV-curable resin by displacing resin into raised features in the stamp. Substrates with imprinted capillary channels were used to form Electrical Conductors by printing a silver ink into reservoirs connected to the channels and allowing capillary flow to coat the channel. Copper electroless plating then filled the channels. The Conductors demonstrate high resolution, high aspect ratio (∼5:1 height:width), low resistance per length, and easy integration into networks. This roll-to-roll imprinting process provides a foundation for high-throughput manufacturing of high-resolution printed el...
-
High-Resolution, High-Aspect-Ratio Printed and Plated Metal Conductors Utilizing Roll-to-Roll Microscale UV Imprinting with Prototype Imprinting Stamps
2018Co-Authors: Krystopher S. Jochem, Wieslaw J. Suszynski, Daniel C. Frisbie, Lorraine F. FrancisAbstract:Micron-scale, high-aspect-ratio features were imprinted by a roll-to-roll process into a UV-curable polymer and used to create high-current-carrying conductive networks on plastic substrates. A stamp fabrication method was developed to create low-cost, rapidly produced roll-to-roll imprinting stamps, which can mold features from 3 μm to 1 mm wide. Isolated raised features 50 μm high were molded from a 25-μm-thick layer of UV-curable resin by displacing resin into raised features in the stamp. Substrates with imprinted capillary channels were used to form Electrical Conductors by printing a silver ink into reservoirs connected to the channels and allowing capillary flow to coat the channel. Copper electroless plating then filled the channels. The Conductors demonstrate high resolution, high aspect ratio (∼5:1 height:width), low resistance per length, and easy integration into networks. This roll-to-roll imprinting process provides a foundation for high-throughput manufacturing of high-resolution printed electronics
Jeroen Van Den Brink - One of the best experts on this subject based on the ideXlab platform.
-
stacked topological insulator built from bismuth based graphene sheet analogues
arXiv: Materials Science, 2013Co-Authors: Bertold Rasche, Volodymyr Zabolotnyy, Klaus Koepernik, Manuel Richter, Anna Isaeva, Carmine Ortix, Michael Ruck, Bernd Büchner, S V Borisenko, Jeroen Van Den BrinkAbstract:Commonly materials are classified as either Electrical Conductors or insulators. The theoretical discovery of topological insulators (TIs) in 2005 has fundamentally challenged this dichotomy. In a TI, spin-orbit interaction generates a non-trivial topology of the electronic band-structure dictating that its bulk is perfectly insulating, while its surface is fully conducting. The first TI candidate material put forward -graphene- is of limited practical use since its weak spin-orbit interactions produce a band-gap of ~0.01K. Recent reinvestigation of Bi2Se3 and Bi2Te3, however, have firmly categorized these materials as strong three-dimensional TI's. We have synthesized the first bulk material belonging to an entirely different, weak, topological class, built from stacks of two-dimensional TI's: Bi14Rh3I9. Its Bi-Rh sheets are graphene analogs, but with a honeycomb net composed of RhBi8-cubes rather than carbon atoms. The strong bismuth-related spin-orbit interaction renders each graphene-like layer a TI with a 2400K band-gap.
-
Stacked topological insulator built from bismuth-based graphene sheet analogues
Nature Materials, 2013Co-Authors: Bertold Rasche, Volodymyr Zabolotnyy, Klaus Koepernik, Manuel Richter, Anna Isaeva, Carmine Ortix, Michael Ruck, Sergey Borisenko, Bernd Büchner, Jeroen Van Den BrinkAbstract:Commonly, materials are classified as either Electrical Conductors or insulators. The theoretical discovery of topological insulators has fundamentally challenged this dichotomy. In a topological insulator, the spin-orbit interaction generates a non-trivial topology of the electronic band structure dictating that its bulk is perfectly insulating, whereas its surface is fully conducting. The first topological insulator candidate material put forward--graphene--is of limited practical use because its weak spin-orbit interactions produce a bandgap of ~0.01 K. Recent reexaminations of Bi2Se3 and Bi2Te3, however, have firmly categorized these materials as strong three-dimensional topological insulators. We have synthesized the first bulk material belonging to an entirely different, weak, topological class, built from stacks of two-dimensional topological insulators: Bi14Rh3I9. Its Bi-Rh sheets are graphene analogues, but with a honeycomb net composed of RhBi8 cubes rather than carbon atoms. The strong bismuth-related spin-orbit interaction renders each graphene-like layer a topological insulator with a 2,400 K bandgap.
Krystopher S. Jochem - One of the best experts on this subject based on the ideXlab platform.
-
high resolution high aspect ratio printed and plated metal Conductors utilizing roll to roll microscale uv imprinting with prototype imprinting stamps
Industrial & Engineering Chemistry Research, 2018Co-Authors: Krystopher S. Jochem, Wieslaw J. Suszynski, Daniel C. Frisbie, Lorraine F. FrancisAbstract:Micron-scale, high-aspect-ratio features were imprinted by a roll-to-roll process into a UV-curable polymer and used to create high-current-carrying conductive networks on plastic substrates. A stamp fabrication method was developed to create low-cost, rapidly produced roll-to-roll imprinting stamps, which can mold features from 3 μm to 1 mm wide. Isolated raised features 50 μm high were molded from a 25-μm-thick layer of UV-curable resin by displacing resin into raised features in the stamp. Substrates with imprinted capillary channels were used to form Electrical Conductors by printing a silver ink into reservoirs connected to the channels and allowing capillary flow to coat the channel. Copper electroless plating then filled the channels. The Conductors demonstrate high resolution, high aspect ratio (∼5:1 height:width), low resistance per length, and easy integration into networks. This roll-to-roll imprinting process provides a foundation for high-throughput manufacturing of high-resolution printed el...
-
High-Resolution, High-Aspect-Ratio Printed and Plated Metal Conductors Utilizing Roll-to-Roll Microscale UV Imprinting with Prototype Imprinting Stamps
2018Co-Authors: Krystopher S. Jochem, Wieslaw J. Suszynski, Daniel C. Frisbie, Lorraine F. FrancisAbstract:Micron-scale, high-aspect-ratio features were imprinted by a roll-to-roll process into a UV-curable polymer and used to create high-current-carrying conductive networks on plastic substrates. A stamp fabrication method was developed to create low-cost, rapidly produced roll-to-roll imprinting stamps, which can mold features from 3 μm to 1 mm wide. Isolated raised features 50 μm high were molded from a 25-μm-thick layer of UV-curable resin by displacing resin into raised features in the stamp. Substrates with imprinted capillary channels were used to form Electrical Conductors by printing a silver ink into reservoirs connected to the channels and allowing capillary flow to coat the channel. Copper electroless plating then filled the channels. The Conductors demonstrate high resolution, high aspect ratio (∼5:1 height:width), low resistance per length, and easy integration into networks. This roll-to-roll imprinting process provides a foundation for high-throughput manufacturing of high-resolution printed electronics
Zhifeng Ren - One of the best experts on this subject based on the ideXlab platform.
-
highly stretchable and transparent nanomesh electrodes made by grain boundary lithography
Nature Communications, 2014Co-Authors: Chuan Fei Guo, Zhigang Suo, Tianyi Sun, Qihan Liu, Zhifeng RenAbstract:One of the key components in stretchable electronics is the Electrical Conductors, which need to show a low Electrical resistance even when strained. Here, by using sacrificial grain boundaries as a fabrication template, Guo and colleagues fabricate highly transparent gold nanomesh electrodes with exceptionally high stretchability.
-
highly stretchable and transparent nanomesh electrodes made by grain boundary lithography
Nature Communications, 2014Co-Authors: Chuan Fei Guo, Zhigang Suo, Tianyi Sun, Qihan Liu, Zhifeng RenAbstract:Foldable photoelectronics and muscle-like transducers require highly stretchable and transparent Electrical Conductors. Some conducting oxides are transparent, but not stretchable. Carbon nanotube films, graphene sheets and metal-nanowire meshes can be both stretchable and transparent, but their Electrical resistances increase steeply with strain <100%. Here we present highly stretchable and transparent Au nanomesh electrodes on elastomers made by grain boundary lithography. The change in sheet resistance of Au nanomeshes is modest with a one-time strain of ~160% (from ~21 Ω per square to ~67 Ω per square), or after 1,000 cycles at a strain of 50%. The good stretchability lies in two aspects: the stretched nanomesh undergoes instability and deflects out-of-plane, while the substrate stabilizes the rupture of Au wires, forming distributed slits. Larger ratio of mesh-size to wire-width also leads to better stretchability. The highly stretchable and transparent Au nanomesh electrodes are promising for applications in foldable photoelectronics and muscle-like transducers.
Zhigang Suo - One of the best experts on this subject based on the ideXlab platform.
-
highly stretchable and transparent nanomesh electrodes made by grain boundary lithography
Nature Communications, 2014Co-Authors: Chuan Fei Guo, Zhigang Suo, Tianyi Sun, Qihan Liu, Zhifeng RenAbstract:One of the key components in stretchable electronics is the Electrical Conductors, which need to show a low Electrical resistance even when strained. Here, by using sacrificial grain boundaries as a fabrication template, Guo and colleagues fabricate highly transparent gold nanomesh electrodes with exceptionally high stretchability.
-
highly stretchable and transparent nanomesh electrodes made by grain boundary lithography
Nature Communications, 2014Co-Authors: Chuan Fei Guo, Zhigang Suo, Tianyi Sun, Qihan Liu, Zhifeng RenAbstract:Foldable photoelectronics and muscle-like transducers require highly stretchable and transparent Electrical Conductors. Some conducting oxides are transparent, but not stretchable. Carbon nanotube films, graphene sheets and metal-nanowire meshes can be both stretchable and transparent, but their Electrical resistances increase steeply with strain <100%. Here we present highly stretchable and transparent Au nanomesh electrodes on elastomers made by grain boundary lithography. The change in sheet resistance of Au nanomeshes is modest with a one-time strain of ~160% (from ~21 Ω per square to ~67 Ω per square), or after 1,000 cycles at a strain of 50%. The good stretchability lies in two aspects: the stretched nanomesh undergoes instability and deflects out-of-plane, while the substrate stabilizes the rupture of Au wires, forming distributed slits. Larger ratio of mesh-size to wire-width also leads to better stretchability. The highly stretchable and transparent Au nanomesh electrodes are promising for applications in foldable photoelectronics and muscle-like transducers.
-
Design and performance of thin metal film interconnects for skin-like electronic circuits
IEEE Electron Device Letters, 2004Co-Authors: St́phanie P. Lacour, Joyelle Jones, Zhigang Suo, Sigurd WagnerAbstract:We prepare stretchable Electrical Conductors of 25-nm-thick gold films on elastomeric substrates prestretched by 15%. When the substrates relax from the prestretch, the gold stripes form surface waves with ∼8.4-μm wavelength and ∼1.2-μm amplitude. When the strain is cycled between 0 and 15%, both the wave pattern and the Electrical resistance of the gold stripes change in reproducible cycles. Such repeatedly stretchable metallization can serve as interconnects for skin-like, conformal, and electroactive polymer circuits.
-
stretchable gold Conductors on elastomeric substrates
Applied Physics Letters, 2003Co-Authors: Stephanie P Lacour, S Wagner, Zhenyu Huang, Zhigang SuoAbstract:Stripes of thin gold films are made on an elastomeric substrate with built-in compressive stress to form surface waves. Because these waves can be stretched flat they function as elastic Electrical Conductors. Surprisingly, we observe Electrical continuity not only up to an external strain of ∼2% reached by stretching the films first flat (∼0.4%) and then to the fracture strain of free-standing gold films (∼1%), but up to ∼22%. Such large strains will permit making stretchable electric Conductors that will be essential to three-dimensional electronic circuits.