Microscale screen printing of large-area arrays of microparticles for the fabrication of photonic structures and for optical sorting

2018 ◽  
Vol 6 (44) ◽  
pp. 12031-12037 ◽  
Author(s):  
Mark A. Rose ◽  
T. P. Vinod ◽  
Stephen A. Morin
Keyword(s):  
Screen Printing ◽  
Large Area ◽  
Photonic Structures ◽  
Optical Sorting ◽  
New Strategy ◽  
Potential Applications

This report describes a new strategy, microparticle screen printing (μSP), generally applicable to the fabrication of homo/heterogeneous arrays of functional particles with potential applications in photonics, optoelectronics, and optical sorting/barcoding.

Screen printing of stretchable electrodes for large area LED matrix

2015 ◽  
Vol 30 (15) ◽  
pp. 2271-2278 ◽  
Author(s):  
Xinning Ho ◽  
Chek Kweng Cheng ◽  
Rachel Lee Siew Tan ◽  
Jun Wei
Keyword(s):  
Screen Printing ◽  
Large Area ◽  
Image Position ◽  
Led Matrix

Abstract

scholarly journals Hexagonal and Square Patterned Silver Nanowires/PEDOT:PSS Composite Grids by Screen Printing for Uniformly Transparent Heaters

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 468 ◽  
Author(s):  
Xin He ◽  
Gengzhe Shen ◽  
Ruibin Xu ◽  
Weijia Yang ◽  
Chi Zhang ◽  
...  
Keyword(s):  
Screen Printing ◽  
Silver Nanowires ◽  
Composite Films ◽  
Silver Nanowire ◽  
Mass Ratio ◽  
Large Area ◽  
High Transparency ◽  
Square Grid ◽  
Photoelectric Properties ◽  
Printing Parameters

Transparent conductive films with hexagonal and square patterns were fabricated on poly(ethylene terephthalate) (PET) substrates by screen printing technology utilizing a poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) and silver nanowire (Ag NWs) composite ink. The printing parameters—mesh number, printing layer, mass ratio of PEDOT:PSS to Ag NWs and pattern shape—have a significant influence on the photoelectric properties of the composite films. The screen mesh with a mesh number of 200 possesses a suitable mesh size of 74 µm for printing clear and integrated grids with high transparency. With an increase in the printing layer and a decrease in the mass ratio of PEDOT:PSS to Ag NWs, the transmittance and resistance of the printed grids both decreased. When the printing layer is 1, the transmittance and resistance are 85.6% and 2.23 kΩ for the hexagonal grid and 77.3% and 8.78 kΩ for the square grid, indicating that the more compact arrangement of square grids reduces the transmittance, and the greater number of connections of the square grid increases the resistance. Therefore, it is believed that improved photoelectric properties of transparent electrodes could be obtained by designing a printing pattern with optimized printing parameters. Additionally, the Ag NWs/PEDOT:PSS composite films with hexagonal and square patterns exhibit high transparency and good uniformity, suggesting promising applications in large-area and uniform heaters.

Volume-CAD: An Integrated Environment for Virtual Manufacturing and Structural Analysis

2007 ◽  
Vol 23 ◽  
pp. 17-24 ◽  
Author(s):  
K. Ohura ◽  
Z. Sun ◽  
Akitake Makinouchi ◽  
Cristian Teodosiu
Keyword(s):  
Structural Analysis ◽  
Research Program ◽  
Virtual Manufacturing ◽  
System Research ◽  
Large Area ◽  
Cad System ◽  
Core Technology ◽  
Integrated Environment ◽  
Simulation Of Casting Processes ◽  
Potential Applications

The Volume-CAD System Research Program aims at developing a core technology for data integration of computerized design, analysis, manufacturing, and testing processes. The potential applications of the Volume-CAD environment cover a large area of engineering and biomedical design. In this paper, we shall mainly focus on the VCAD-based software for the structural analysis and the simulation of casting processes.

scholarly journals Adipose-Derived Mesenchymal Stem Cells: A Promising Tool in the Treatment of Musculoskeletal Diseases

2019 ◽  
Vol 20 (12) ◽  
pp. 3105 ◽  
Author(s):  
Marta Torres-Torrillas ◽  
Monica Rubio ◽  
Elena Damia ◽  
Belen Cuervo ◽  
Ayla del Romero ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Musculoskeletal Diseases ◽  
Cartilage Regeneration ◽  
Promising Tool ◽  
New Strategy ◽  
Accurate Treatment ◽  
Potential Applications ◽  
Preclinical And Clinical Studies ◽  
Surgical Treatments

Chronic musculoskeletal (MSK) pain is one of the most common medical complaints worldwide and musculoskeletal injuries have an enormous social and economical impact. Current pharmacological and surgical treatments aim to relief pain and restore function; however, unsatiscactory outcomes are commonly reported. In order to find an accurate treatment to such pathologies, over the last years, there has been a significantly increasing interest in cellular therapies, such as adipose-derived mesenchymal stem cells (AMSCs). These cells represent a relatively new strategy in regenerative medicine, with many potential applications, especially regarding MSK disorders, and preclinical and clinical studies have demonstrated their efficacy in muscle, tendon, bone and cartilage regeneration. Nevertheless, several worries about their safety and side effects at long-term remain unsolved. This article aims to review the current state of AMSCs therapy in the treatment of several MSK diseases and their clinical applications in veterinary and human medicine.

Potential Applications of Poly-Silicon as an Electronic-Device Material

1981 ◽  
Vol 5 ◽  
Author(s):  
Dirk J. Bartelink
Keyword(s):  
Electronic Material ◽  
Grain Boundaries ◽  
Electronic Device ◽  
Crystalline Silicon ◽  
Ground Plane ◽  
Current Trend ◽  
Active Material ◽  
Flat Panel Display ◽  
Large Area ◽  
Potential Applications

ABSTRACTPoly-crystalline silicon can be regarded as a true electronic material if good p-n junctions can be made in it or if its state of depletion can be altered by reasonable gate voltages. The degree of perfection with which it must exhibit these electronic-material properties depends on whether the application is as a technology in VLSI (or other bulk-Si substrate use) where devices with bulk-crystalline properties are available or as the principal active material in Large Area Integration (LAI), such as flat-panel display addressing circuits, where the competition is much less demanding. The three main detrimental effects of grain boundaries on electronic-device function are the action of grain boundary traps as (1) extra charge centers, (2) lifetime killers, and (3) mobility-reducing scattering centers. The current trend in reducing or almost eliminating grain boundaries by laser recrystallization or lateral epitaxy has the effect of reducing the average number of traps. In terms of potential applications of the material, the improvement derived from these procedures must be balanced against other contraints placed on the overall structure. For example, the thickness and quality of the lower oxide (and interface) in these processes will determine whether an electronically active lower gate function is practical. Some currently envisioned applications include load devices in inverters either as resistors or as depletion transistors, common-gate staked CMOS structures, dual-channel MOSFET's, and other “vertical VLSI” applications. The systems-level topological advantages of stacked structures and the circuit-performance improvement provided by the ground plane in dielectrically isolated devices must also be balanced against the extra cost and yield loss of additional masking level complexity and design complication.

Synthesis of monodisperse single-crystal Cu2O spheres and their application in generating structural colors

2019 ◽  
Vol 7 (15) ◽  
pp. 4551-4558 ◽  
Author(s):  
Jiajie Bi ◽  
Suli Wu ◽  
Hongbo Xia ◽  
Lu Li ◽  
Shufen Zhang
Keyword(s):  
Single Crystal ◽  
Room Temperature ◽  
Building Blocks ◽  
Large Area ◽  
Structural Colors ◽  
Photonic Structures ◽  
Spray Method ◽  
Solid Spheres

A two-step reductive strategy is developed to synthesize monodisperse single-crystal Cu2O solid spheres at room-temperature. The single-crystal spheres with adjustable diameter were used as building blocks to form amorphous photonic structures by spray method, which exhibits vivid colors. This may open a new way to realize large area film with vivid structure color.

Large‐Area Fabrication of Highly Tunable Hybrid Plasmonic–Photonic Structures Based on Colloidal Lithography and a Photoreconfigurable Polymer

2019 ◽  
Vol 7 (19) ◽  
pp. 1900483 ◽  
Author(s):  
Shiqiang Wang ◽  
Hao Dong ◽  
Fuwei Sun ◽  
Wanlin Zhang ◽  
Yun Liang ◽  
...  
Keyword(s):  
Colloidal Lithography ◽  
Large Area ◽  
Photonic Structures

scholarly journals Facile and Controllable Synthesis of Large-Area Monolayer WS2 Flakes Based on WO3 Precursor Drop-Casted Substrates by Chemical Vapor Deposition

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 578 ◽  
Author(s):  
Biao Shi ◽  
Daming Zhou ◽  
Shaoxi Fang ◽  
Khouloud Djebbi ◽  
Shuanglong Feng ◽  
...  
Keyword(s):  
Energy Gap ◽  
Growth Parameters ◽  
Fluorescence Emission ◽  
Chemical Vapor ◽  
Optical Microscope ◽  
Edge Length ◽  
Controllable Synthesis ◽  
Large Area ◽  
Si Substrates ◽  
Potential Applications

Monolayer WS2 (Tungsten Disulfide) with a direct-energy gap and excellent photoluminescence quantum yield at room temperature shows potential applications in optoelectronics. However, controllable synthesis of large-area monolayer WS2 is still challenging because of the difficulty in controlling the interrelated growth parameters. Herein, we report a facile and controllable method for synthesis of large-area monolayer WS2 flakes by direct sulfurization of powdered WO3 (Tungsten Trioxide) drop-casted on SiO2/Si substrates in a one-end sealed quartz tube. The samples were thoroughly characterized by an optical microscope, atomic force microscope, transmission electron microscope, fluorescence microscope, photoluminescence spectrometer, and Raman spectrometer. The obtained results indicate that large triangular monolayer WS2 flakes with an edge length up to 250 to 370 μm and homogeneous crystallinity were readily synthesized within 5 min of growth. We demonstrate that the as-grown monolayer WS2 flakes show distinctly size-dependent fluorescence emission, which is mainly attributed to the heterogeneous release of intrinsic tensile strain after growth.

HYBRID SEMICONDUCTING QUANTUM DOTS–METALLIC NANOPARTICLES ARRAYS FOR POSSIBLE NANOPHOTONIC DEVICES

2011 ◽  
Vol 10 (04n05) ◽  
pp. 1113-1118
Author(s):  
M. HARIDAS ◽  
J. K. BASU
Keyword(s):  
Quantum Dots ◽  
Self Assembly ◽  
Metallic Nanoparticles ◽  
Quantum Information Processing ◽  
Imaging Techniques ◽  
Large Area ◽  
Nanophotonic Devices ◽  
Wide Range ◽  
Potential Applications ◽  
Assembly Technique

Arrays of quantum dots and hybrid arrays of semiconducting quantum dots and metallic nanoparticles have wide range of potential applications from nanophotonics to quantum information processing. Creating such arrays with well-defined morphology and order over a large area is a challenge. We present a reliable method for constructing such arrays using simple self assembly technique. The reliability of the method is verified using AFM. The emission properties of such system are studied using high resolution imaging techniques and we have given the possible explanation for the observed phenomena.

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