Multiplexed biosample delivery with surface patterned microstructure for microcantilever

2013 ◽  
Vol 13 (6) ◽  
pp. 996-1000
Author(s):  
Don Hur ◽  
Hongchul Jang ◽  
Jeong Hoon Lee
Keyword(s):  
Patterned Microstructure

Localized Microstructures Fabrication Through Standing Surface Acoustic Wave and User-Defined Waveguides

2019 ◽  
Author(s):  
Yancheng Wang ◽  
Chenyang Han ◽  
Deqing Mei ◽  
Chengyao Xu
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Structural Design ◽  
Acoustic Waves ◽  
Biomedical Applications ◽  
Cell Interaction ◽  
Experimental Setup ◽  
Acoustic Waveguides ◽  
Novel Method ◽  
Patterned Microstructure

Abstract Polymer-based substrates with patterned microstructure on the surfaces, e.g., cell culturing scaffolds, have been utilized in biomedical applications. This paper develops a novel method to fabricate the localized microstructure on the polymer-based substrate with the assistance of standing surface acoustic wave (SAW) and user-defined acoustic waveguides. The specific designed acoustic waveguides can localize the standing acoustic waves and transmit to the liquid film and excite patterned microstructures on the surface, then using ultraviolet (UV) to solidify the substrate with patterned microstructures. The structural design and fabrication of the SAW device and three different shaped acoustic waveguides are presented. Then, experimental setup and procedures to verify the polymer-substrate with localized microstructures fabrication are performed. By using the different shape of the acoustic waveguides, several types of patterned microstructures with different morphologies are successfully fabricated. Results demonstrated that the proposed fabrication method is an effective way to fabricate polymer-based substrate with localized patterned microstructures, which may have potential in the research on tissue engineering, cell-cell interaction, and other biomedical applications.

Dynamic Behavior of Vertically Aligned Carbon Nanotube Foams With Patterned Microstructure

2015 ◽  
Vol 17 (10) ◽  
pp. 1470-1479 ◽  
Author(s):  
Ludovica Lattanzi ◽  
Ramathasan Thevamaran ◽  
Luigi De Nardo ◽  
Chiara Daraio
Keyword(s):  
Carbon Nanotube ◽  
Dynamic Behavior ◽  
Vertically Aligned ◽  
Patterned Microstructure

Patterned Microstructure Array Fabrication by Using a Novel Standing Surface Acoustic Wave Device

2017 ◽  
Author(s):  
Yancheng Wang ◽  
Dai Xue ◽  
Zhaoxin Deng ◽  
Deqing Mei
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Polymer Surface ◽  
Liquid Polymer ◽  
Working Principle ◽  
Surface Morphologies ◽  
Acoustic Wave Device ◽  
Patterned Microstructure ◽  
Wave Device ◽  
Array Fabrication

This paper develops a novel standing surface acoustic wave (SAW) device with three-pair of interdigital transducers (IDTs) to fabricate the patterned microstructure arrays with the assistance of ultraviolet (UV) polymerization. The working principle, structural design, and fabrication of the SAW device are presented. Then experimental setup was conducted to investigate the fabrication process and method of the patterned microstructure arrays on a thin liquid polymer surface. By adjusting the input wavelength and working voltage and selecting the pairs of IDTs, several types of patterned microstructure arrays, such as linear undulate and latticed undulate with different surface morphologies, could be fabricated. Results also demonstrated that the developed SAW device with the assistance of UV polymerization is an effective method to fabricate the patterned microstructure arrays, which may have great potential in the application of biomedical and microelectronic fields.

Facile fabrication of binary wettability patterned microstructure for microfluidics

2021 ◽  
Vol 31 (4) ◽  
pp. 045007
Author(s):  
Biao Tang ◽  
Miaoyang Wei ◽  
Wan Shao ◽  
Jitesh Barman ◽  
Hailing Sun ◽  
...  
Keyword(s):  
Facile Fabrication ◽  
Patterned Microstructure

Periodic Pattern Formation in Metal-Ceramic Reactions

2006 ◽  
Vol 46 ◽  
pp. 136-145 ◽  
Author(s):  
A.A. Kodentsov ◽  
F.J.J. van Loo
Keyword(s):  
Pattern Formation ◽  
Reaction Zone ◽  
Diffusion Zone ◽  
Kirkendall Effect ◽  
Periodic Pattern ◽  
Time And Space ◽  
Phase Layer ◽  
Diffusion Controlled ◽  
Metal Ceramic ◽  
Patterned Microstructure

Formation of diffusion zone morphologies periodic in time and space during metalceramic reactions is considered as a manifestation of the Kirkendall effect. In a diffusion-controlled interaction, the Kirkendall marker plane can bifurcate, which is attributed to diverging vacancies fluxes in the reaction zone. When the Kirkendall plane is present in a phase layer, it attracts in situproduced inclusions of “secondary-formed phase”, which, in turn, can result in a highly patterned microstructure.

Stress Relaxation of a Patterned Microstructure on a Diaphragm

2002 ◽  
Vol 17 (7) ◽  
pp. 1795-1802 ◽  
Author(s):  
D. W. Zheng ◽  
X. H. Wang ◽  
K. Shyu ◽  
C. Chen ◽  
C-T. Chang ◽  
...  
Keyword(s):  
Thin Film ◽  
Residual Stress ◽  
Stress Relaxation ◽  
Sequential Analysis ◽  
Green Laser ◽  
Simulation Software ◽  
Substrate Thickness ◽  
Si Substrate ◽  
Written Simulation ◽  
Patterned Microstructure

Stress relaxation of a patterned thin film on diaphragms of different material and thickness was investigated through experimental study and numerical simulation. The diaphragm deflections, caused by relaxation of the residual stress in a patterned thin film residing on top, were measured using a Twyman–Green laser interferometer. The first diaphragm used was a Si3N4(top)/SiO2/Si composite diaphragm and the second a 0.5-μm-thick Si3N4 membrane. Custom-written simulation software, which uses a novel numerical algorithm named Nonlinear Sequential Analysis (N-LISA), was utilized to calculate the stress distribution in the patterned thin film and the diaphragm substrate. Agreement between the model and the experimental results was satisfactory. Simulation of the system balance between a tensile-stressed circular Ti film and a stress-free Si substrate of different thickness clearly shows a transition in the substrate behavior from a pure plate to a pure membrane. Interestingly, the deflection of the Si substrate caused by the residual stress in the Ti film reaches its maximum at a certain substrate thickness where plate and membrane characteristics coexist. This study addresses some basic mechanics issues involved in modern devices dealing with thin diaphragms.

Patterned Microstructure Array Fabrication by Using a Novel Standing Surface Acoustic Wave Device

2017 ◽  
Vol 6 (2) ◽  
Author(s):  
Yancheng Wang ◽  
Dai Xue ◽  
Deqing Mei
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Polymer Surface ◽  
Input Voltage ◽  
Photosensitive Polymer ◽  
Working Principle ◽  
Surface Morphologies ◽  
Acoustic Wave Device ◽  
L929 Mouse ◽  
Patterned Microstructure

This paper develops a novel standing surface acoustic wave (SAW) device with three pairs of interdigital transducers (IDTs) to fabricate the patterned microstructure arrays with the assistance of ultraviolet (UV) polymerization. The working principle, structural design, and fabrication of the SAW device are presented. Then, experimental setup was conducted to investigate the fabrication process and method of the patterned microstructure arrays on a thin photosensitive polymer surface. By adjusting the working wavelength and input voltage and selecting the pairs of IDTs, several types of patterned microstructure arrays, such as linear and latticed undulate with different surface morphologies, could be fabricated. For the application of the microstructure arrays, L929 mouse fibroblasts are cultured on the surface with linear undulate microstructure arrays. Preliminary results showed that the cells aligned well with the direction of the patterned surface and the array can enhance the cell culturing. Therefore, using the developed SAW device with the assistance of UV polymerization is an effective method to fabricate the patterned microstructure arrays, which may have great potential in the applications of biomedical and/or microelectronic fields.

Fabrication of Aluminum Composites With Patterned Silicon Carbide Reinforcement Architecture by Semi-Solid Processing

2012 ◽  
Author(s):  
Can Zhu ◽  
Yufeng Wu ◽  
Gap-Yong Kim
Keyword(s):  
Silicon Carbide ◽  
Aluminum Alloy ◽  
Powder Processing ◽  
Spray Deposition ◽  
Deposition Process ◽  
Bend Test ◽  
Test Results ◽  
Composite Microstructure ◽  
Semi Solid ◽  
Patterned Microstructure

Semi-solid powder processing is a promising technology, combining the advantages of semi-solid forming and powder metallurgy. In this study, spray deposition process combined with semi-solid powder processing was used to synthesize an aluminum alloy composite and to control its microstructure. Silicon carbide (SiC) reinforced aluminum alloy composites were fabricated with and without microstructure pattern. The influence of different composite microstructure on mechanical properties was analyzed by microstructure analysis, bend test and fracture analysis. Bend test results showed that patterned microstructure has the potential to significantly improve composite strength with minimal sacrifice of ductility.

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