Laser forward transfer using a sacrificial layer: Influence of the material properties

2007 ◽  
Vol 254 (4) ◽  
pp. 1322-1326 ◽  
Author(s):  
Romain Fardel ◽  
Matthias Nagel ◽  
Frank Nüesch ◽  
Thomas Lippert ◽  
Alexander Wokaun
Keyword(s):  
Material Properties ◽  
Sacrificial Layer ◽  
Forward Transfer

Laser Induced Forward Transfer: Topography Dependence of Laser Fluence and Thickness for Titanium Film

2018 ◽  
Author(s):  
Jie Zhao ◽  
Yongxiang Hu ◽  
Zhenqiang Yao
Keyword(s):  
Laser Fluence ◽  
Physical Mechanism ◽  
Sacrificial Layer ◽  
High Melting ◽  
High Melting Point ◽  
Titanium Film ◽  
Nanosecond Pulses ◽  
Wide Range ◽  
Forward Transfer ◽  
Ti Films

Compared with other metals, titanium has a wide range of applications in laser induced forward transfer (LIFT) due to its unique properties of low thermal conductivity and high melting point. In general, the titanium film is used as a sacrificial layer or transferred material in LIFT with different laser fluence. In this study, four different topography types are classified under the laser irradiation of ultraviolet nanosecond pulses. For Ti films with different thicknesses, probability distribution of these types is provided to demonstrate how topographies evolve with the increasing laser fluence. Through the research, the understanding of the physical mechanism of titanium film would be deepened.

Shadowgraphy investigation of laser-induced forward transfer: Front side and back side ablation of the triazene polymer sacrificial layer

2009 ◽  
Vol 255 (10) ◽  
pp. 5430-5434 ◽  
Author(s):  
Romain Fardel ◽  
Matthias Nagel ◽  
Frank Nüesch ◽  
Thomas Lippert ◽  
Alexander Wokaun
Keyword(s):  
Sacrificial Layer ◽  
Back Side ◽  
Front Side ◽  
Forward Transfer

scholarly journals Improving Compactness of 3D Metallic Microstructures Printed by Laser-Induced Forward Transfer

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 291
Author(s):  
Niv Gorodesky ◽  
Sharona Sedghani-Cohen ◽  
Ofer Fogel ◽  
Amir Silber ◽  
Maria Tkachev ◽  
...  
Keyword(s):  
Material Properties ◽  
Single Step ◽  
Digital Printing ◽  
Ambient Conditions ◽  
Chemical Corrosion ◽  
Metal Structures ◽  
Specific Choice ◽  
Complex Shapes ◽  
Forward Transfer ◽  
Printing Method

Laser-induced forward transfer (LIFT) has been shown to be a useful technique for the manufacturing of micron-scale metal structures. LIFT is a high-resolution, non-contact digital printing method that can support the fabrication of complex shapes and multi-material structures in a single step under ambient conditions. However, LIFT printed metal structures often suffer from inferior mechanical, electrical, and thermal properties when compared to their bulk metal counterparts, and often are prone to enhanced chemical corrosion. This is due mostly to their non-compact structures, which have voids and inter-droplet delamination. In this paper, a theoretical framework together with experimental results of achievable compactness limits is presented for a variety of metals. It is demonstrated that compactness limits depend on material properties and jetting conditions. It is also shown how a specific choice of materials can yield compact structures, for example, when special alloys are chosen along with a suitable donor construct. The example of printed amorphous ZrPd is detailed. This study contributes to a better understanding of the limits of implementing LIFT for the fabrication of metal structures, and how to possibly overcome some of these limitations.

Grain boundary segregation in metals

1992 ◽  
Vol 50 (2) ◽  
pp. 1204-1205
Author(s):  
C.L. Briant
Keyword(s):  
Fracture Surface ◽  
Grain Boundary ◽  
Grain Boundaries ◽  
Material Properties ◽  
Electron Spectroscopy ◽  
High Vacuum ◽  
Boundary Segregation ◽  
Grain Boundary Segregation ◽  
Local Concentration ◽  
The One

Grain boundary segregation is the process by which solute elements in a material diffuse to the grain boundaries, become trapped there, and increase their local concentration at the boundary over that in the bulk. As a result of this process this local concentration of the segregant at the grain boundary can be many orders of magnitude greater than the bulk concentration of the segregant. The importance of this problem lies in the fact that grain boundary segregation can affect many material properties such as fracture, corrosion, and grain growth.One of the best ways to study grain boundary segregation is with Auger electron spectroscopy. This spectroscopy is an extremely surface sensitive technique. When it is used to study grain boundary segregation the sample must first be fractured intergranularly in the high vacuum spectrometer. This fracture surface is then the one that is analyzed. The development of scanning Auger spectrometers have allowed researchers to first image the fracture surface that is created and then to perform analyses on individual grain boundaries.

Relationships Between Grain Boundary Structure and Material Properties

1980 ◽  
Vol 38 ◽  
pp. 366-369
Author(s):  
Brian Ralph ◽  
Barlow Claire ◽  
Nicola Ecob
Keyword(s):  
Grain Boundary ◽  
Material Properties ◽  
Main Property ◽  
Grain Structure ◽  
Boundary Structure ◽  
Grain Boundary Structure ◽  
Property Changes

This brief review seeks to summarize some of the main property changes which may be induced by altering the grain structure of materials. Where appropriate an interpretation is given of these changes in terms of current theories of grain boundary structure, and some examples from current studies are presented at the end of this paper.

Bone material properties as measured by Reference Point Indentation are low in subjects with acromegaly

2016 ◽  
Author(s):  
Frank Malgo ◽  
Neveen A T Hamdy ◽  
Alberto M Pereira ◽  
Nienke R Biermasz ◽  
Natasha M Appelman-Dijkstra
Keyword(s):  
Material Properties ◽  
Reference Point ◽  
Bone Material ◽  
Bone Material Properties ◽  
Reference Point Indentation
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