Direct writing of electronic and sensor materials using a laser transfer technique

2000 ◽  
Vol 15 (9) ◽  
pp. 1872-1875 ◽  
Author(s):  
A. Piqué ◽  
D. B. Chrisey ◽  
J. M. Fitz-Gerald ◽  
R. A. McGill ◽  
R. C. Y. Auyeung ◽  
...  
Keyword(s):  
Fused Silica ◽  
Laser Evaporation ◽  
Direct Write ◽  
Metal Powders ◽  
Direct Writing ◽  
Ceramic Powders ◽  
Composite Matrix ◽  
Laser Transfer ◽  
Matrix Surface ◽  
The Matrix

We present a laser-based direct write technique termed matrix-assisted pulsed-laser evaporation direct write (MAPLE DW). This technique utilizes a laser transparent fused silica disc coated on one side with a composite matrix consisting of the material to be deposited mixed with a laser absorbing polymer. Absorption of laser radiation results in the decomposition of the polymer, which aids in transferring the solute to an acceptor substrate placed parallel to the matrix surface. Using MAPLE DW, complex patterns consisting of metal powders, ceramic powders, and polymer composites were transferred onto the surfaces of various types of substrates with <10 micron resolution at room temperature and at atmospheric pressure without the use of masks.

Direct writing of polymer thick film resistors using a novel laser transfer technique

2001 ◽  
Vol 16 (11) ◽  
pp. 3214-3222 ◽  
Author(s):  
R. Modi ◽  
H. D. Wu ◽  
R. C. Y. Auyeung ◽  
C. M. Gilmore ◽  
D. B. Chrisey
Keyword(s):  
Thick Film ◽  
Room Temperature ◽  
Equivalent Circuit Model ◽  
Wide Frequency Range ◽  
Laser Evaporation ◽  
Direct Write ◽  
Electrical Characteristics ◽  
Direct Writing ◽  
Ambient Conditions ◽  
Laser Transfer

Polymer thick film (PTF) resistors were fabricated using a new laser-based transfer technique called matrix-assisted pulsed laser evaporation direct write (MAPLE-DW). MAPLE-DW is a versatile direct writing technique capable of writing a wide variety of materials on virtually any substrate in air and at room temperature. Epoxy-based PTF resistors spanning four decades of sheet resistances (10 Ω/sq. to 100 kΩ/sq.) were deposited on alumina substrates under ambient conditions. Electrical characteristics of these MAPLE-DW deposited resistors were studied at a wide frequency range (1 MHz to 1.8 GHz), and the results were explained through an equivalent circuit model and impedance spectroscopy. Temperature coefficient of resistance measurements for the PTF resistors were performed between 25 and 125 °C. The results based on the percolation theory were used to explain the temperature dependence of the resistance behavior of the PTF resistors.

Metallic Foil-Assisted Laser Cell Printing

2011 ◽  
Vol 133 (2) ◽  
Author(s):  
Yafu Lin ◽  
Yong Huang ◽  
Douglas B. Chrisey
Keyword(s):  
Cell Viability ◽  
Cell Injury ◽  
Laser Energy ◽  
Layer Structure ◽  
Adhesive Layer ◽  
Laser Evaporation ◽  
Direct Write ◽  
Direct Writing ◽  
Human Colon Cancer ◽  
Metallic Foil

Laser direct-write technology such as modified laser-induced forward transfer (LIFT) is emerging as a revolutionary technology for biological construct fabrication. While many modified LIFT-based cell direct writing successes have been achieved, possible process-induced cell injury and death is still a big hurdle for modified LIFT-based cell direct writing to be a viable technology. The objective of this study is to propose metallic foil-assisted LIFT using a four-layer structure to achieve better droplet size control and increase cell viability in direct writing of human colon cancer cells (HT-29). The proposed four layers include a quartz disk, a sacrificial and adhesive layer, a metallic foil, and a cell suspension layer. The bubble formation-induced stress wave is responsible for droplet formation. It is found that the proposed metallic foil-assisted LIFT approach is an effective cell direct-write technology and provides better printing resolution and high post-transfer cell viability when compared with other conventional modified LIFT technologies such as matrix-assisted pulsed-laser evaporation direct-write; at the same time, the possible contamination from the laser energy absorbing material is minimized using a metallic foil.

Dielectric properties of oxide structures by a laser-based direct-writing method

2001 ◽  
Vol 16 (6) ◽  
pp. 1720-1725 ◽  
Author(s):  
D. Young ◽  
H. D. Wu ◽  
R. C. Y. Auyeung ◽  
R. Modi ◽  
J. Fitz-Gerald ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Electronic Materials ◽  
Dielectric Material ◽  
Laser Evaporation ◽  
Direct Write ◽  
Oxide Materials ◽  
Direct Writing ◽  
Interdigitated Electrode ◽  
Precise Control ◽  
Logarithmic Rule

Matrix-assisted pulsed laser evaporation direct-write (MAPLE-DW) is a laser-based method of directly writing mesoscopic patterns of electronic materials. Patterns of composite BaTiO3/SiO2/TiO2 dielectric material were written onto Pt/Au interdigitated-electrode test structures, with precise control over final dielectric properties. Scanning electron microscopy indicates random close-packed structures of BaTiO3 and SiO3 particles, with interstitial spaces partially filled with titania. Depending on the BaTiO3:silica ratio, the dielectric constant ranged from 5 to 55 and followed a 4-component logarithmic rule of mixing. This work demonstrates that the transfer process and the final material properties of MAPLE-DW oxide materials are largely decoupled.

scholarly journals Laser Direct Writing of Hydrous Ruthenium Dioxide Micro-Pseudocapacitors

2001 ◽  
Vol 698 ◽  
Author(s):  
Craig B. Arnold ◽  
Ryan C. Wartena ◽  
Bhanu Pratap ◽  
Karen E. Swider-Lyons ◽  
Alberto Piqué
Keyword(s):  
High Surface ◽  
High Surface Area ◽  
Laser Evaporation ◽  
Ruthenium Dioxide ◽  
Direct Write ◽  
Atmospheric Conditions ◽  
Direct Writing ◽  
Laser Direct Writing ◽  
Forward Transfer ◽  
Discharge Behavior

ABSTRACTWe are using a laser engineering approach to develop and optimize hydrous ruthenium dioxide (RuOxHy or RuO2·0.5 H2O) pseudocapacitors. We employ a novel laser forward transfer process, Matrix Assisted Pulsed Laser Evaporation Direct Write (MAPLE-DW), in combination with UV laser machining, to fabricate mesoscale pseudocapacitors and microbatteries under ambient temperature and atmospheric conditions. Thin films with the desired high surface area morphology are obtained without compromising their electrochemical performance. The highest capacitance structures are achieved by depositing mixtures of sulfuric acid with the RuO2·0.5 H2O electrode material. Our pseudocapacitors exhibit linear discharge behavior and their properties scale proportionately when assembled in parallel and series configurations.

Laser transfer of biomaterials: Matrix-assisted pulsed laser evaporation (MAPLE) and MAPLE Direct Write

2003 ◽  
Vol 74 (4) ◽  
pp. 2546-2557 ◽  
Author(s):  
P. K. Wu ◽  
B. R. Ringeisen ◽  
D. B. Krizman ◽  
C. G. Frondoza ◽  
M. Brooks ◽  
...  
Keyword(s):  
Pulsed Laser ◽  
Laser Evaporation ◽  
Direct Write ◽  
Laser Transfer

scholarly journals Influence of Alumina Nanofibers Sintered by the Spark Plasma Method on Nickel Mechanical Properties

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 548 ◽  
Author(s):  
Leonid Agureev ◽  
Valeriy Kostikov ◽  
Zhanna Eremeeva ◽  
Svetlana Savushkina ◽  
Boris Ivanov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Strength Properties ◽  
Alumina Nanoparticles ◽  
Metal Powders ◽  
Wide Range ◽  
The Matrix ◽  
Spark Plasma ◽  
Average Size

The article presents the study of alumina nanoparticles’ (nanofibers) concentration effect on the strength properties of pure nickel. The samples were obtained by spark plasma sintering of previously mechanically activated metal powders. The dependence of the grain size and the relative density of compacts on the number of nanofibers was investigated. It was found that with an increase in the concentration of nanofibers, the average size of the matrix particles decreased. The effects of the nanoparticle concentration (0.01–0.1 wt.%) on the elastic modulus and tensile strength were determined for materials at 25 °C, 400 °C, and 750 °C. It was shown that with an increase in the concentration of nanofibers, a 10–40% increase in the elastic modulus and ultimate tensile strength occurred. A comparison of the mechanical properties of nickel in a wide range of temperatures, obtained in this work with materials made by various technologies, is carried out. A description of nanofibers’ mechanisms of influence on the structure and mechanical properties of nickel is given. The possible impact of impurity phases on the properties of nickel is estimated. The tendency of changes in the mechanical properties of nickel, depending on the concentration of nanofibers, is shown.

Organic Light Emitting Material Direct Writing by Nanomaterial Enabled Laser Transfer

2009 ◽  
Vol 1179 ◽  
Author(s):  
Seung Hwan Ko ◽  
Heng Pan ◽  
Nipun Misra ◽  
Costas Grigoropoulos
Keyword(s):  
Mass Production ◽  
Laser Energy ◽  
Light Emitting Diode ◽  
Nanoparticle Size ◽  
Temperature Sensitive ◽  
Conductive Heat ◽  
Direct Writing ◽  
Light Emitting ◽  
Laser Transfer ◽  
Organic Light

AbstractOrganic light emitting material direct writing is demonstrated based on nanomaterial enabled laser transfer. Through utilization of proper nanoparticle size and type, and the laser wavelength choice, a single laser pulse could transfer well defined and arbitrarily shaped tris-(8-hydroxyquinoline)Al patterns ranging from several microns to millimeter size. The unique properties of nanomaterials allow laser induced forward transfer at low laser energy (0.05 J/cm2) while maintaining good fluorescence. The technique may be well suited for the mass production of temperature sensitive organic light emitting devices.The combined effects of melting temperature depression, lower conductive heat transfer loss, strong absorption of the incident laser beam, and relatively weak bonding between nanoparticles during laser irradiation result in the transfer of patterns with very sharp edges at relatively lower laser energy than commonly used, thus inducing minimal damage to the target organic light emitting diode material with no evidence of cracks. This technique can be applied to a broad range of laser wavelengths with proper selection of nanoparticle size and size distribution, as well as the material type. Additionally, nanomaterial enabled laser transfer may be particularly advantageous for the mass production of temperature sensitive devices.

Recent Advances in Biohybrid Materials for Tissue Engineering and Regenerative Medicine

2016 ◽  
Vol 04 (01) ◽  
pp. 1640001 ◽  
Author(s):  
Ying Wan ◽  
Xing Li ◽  
Shenqi Wang
Keyword(s):  
Tissue Engineering ◽  
Regenerative Medicine ◽  
Cell Function ◽  
Rapid Prototype ◽  
Artificial Organs ◽  
Specific Cell ◽  
Cell Matrix ◽  
Matrix Surface ◽  
The Matrix ◽  
Cell Matrix Interactions

Biohybrid materials play an important role in tissue engineering, artificial organs and regenerative medicine due to their regulation of cell function through specific cell–matrix interactions involving integrins, mostly those of fibroblasts and myofibroblasts, and ligands on the matrix surface, which have become current research focus. In this paper, recent progress of biohybrid materials, mainly including main types of biohybrid materials, rapid prototype (RP) technique for construction of 3D biohybrid materials, was reviewed in detail; moreover, their applications in tissue engineering, artificial organs and regenerative medicine were also reviewed in detail. At last, we address the challenges biohybrid materials may face.

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