Effect of spin coating on the interfacial adhesion of epoxy adhesive on silicon substrate for the fabrication of polymer optical waveguide

2004 ◽  
Author(s):  
A.H.P. Chan ◽  
M.A. Uddin ◽  
C.K. Chow
Keyword(s):  
Optical Waveguide ◽  
Silicon Substrate ◽  
Spin Coating ◽  
Interfacial Adhesion ◽  
Epoxy Adhesive

Effect of spin coating on the curing rate of epoxy adhesive for the fabrication of a polymer optical waveguide

2004 ◽  
Vol 33 (3) ◽  
pp. 224-228 ◽  
Author(s):  
M. A. Uddin ◽  
H. P. Chan ◽  
C. K. Chow ◽  
Y. C. Chan
Keyword(s):  
Optical Waveguide ◽  
Spin Coating ◽  
Epoxy Adhesive

scholarly journals Binary Self-Assembly of Nanocolloidal Arrays using Concurrent and Sequential Spin Coating Techniques

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 274
Author(s):  
Shih-Jyun Shen ◽  
Demei Lee ◽  
Yu-Chen Wu ◽  
Shih-Jung Liu
Keyword(s):  
Silicon Substrate ◽  
Self Assembly ◽  
Spin Coating ◽  
Processing Parameters ◽  
The Self ◽  
Silicon Substrates ◽  
Processing Conditions ◽  
Polystyrene Spheres ◽  
Optimal Processing ◽  
Spin Coater

This paper reports the binary colloid assembly of nanospheres using spin coating techniques. Polystyrene spheres with sizes of 900 and 100 nm were assembled on top of silicon substrates utilizing a spin coater. Two different spin coating processes, namely concurrent and sequential coatings, were employed. For the concurrent spin coating, 900 and 100 nm colloidal nanospheres of latex were first mixed and then simultaneously spin coated onto the silicon substrate. On the other hand, the sequential coating process first created a monolayer of a 900 nm nanosphere array on the silicon substrate, followed by the spin coating of another layer of a 100 nm colloidal array on top of the 900 nm array. The influence of the processing parameters, including the type of surfactant, spin speed, and spin time, on the self-assembly of the binary colloidal array were explored. The empirical outcomes show that by employing the optimal processing conditions, binary colloidal arrays can be achieved by both the concurrent and sequential spin coating processes.

Experimental Measurement and Analysis of Microelectronics Application Polymer Materials Properties

1992 ◽  
Vol 264 ◽  
Author(s):  
Y.H. Jeng ◽  
Mirng-Ji Lii
Keyword(s):  
Thin Film ◽  
Material Properties ◽  
Silicon Substrate ◽  
Coupling Effect ◽  
Measurement Techniques ◽  
Epoxy Adhesive ◽  
Polymer Materials ◽  
Fea Model ◽  
Curvature Measurement ◽  
Substrate Curvature

AbstractA laser based surface scanning technique was utilized to measure the polyimide coated silicon wafer curvature resulting from thermal cycling and mismatch, Meanwhile, mechanical properties of polyimide thin film were characterized by DMA, TMA and tensile test. Based on the obtained material properties, A FEA model was developed to analyze the experimental results -reasonable correlation was obtained.Similar approaches were taken one step further in the MCM silicon substrate curvature measurement. In a MCM package with silicon substrate, epoxy adhesive, and ceramic package, substrate warpage was developed in a thermal cycle due to thermal mismatch between the substrate and the package and coupling effect linked by epoxy adhesive. Three different substrate curvature measurement techniques were applied to identify the substrate curvature and epoxy thin film properties were also well characterized. A 3D FEA model incorporating with the epoxy material properties was developed to analyze the substrate warpage and investigate an optimal package design.

scholarly journals Application of Ba0.5Sr0.5TiO3 (Bst) Film Doped with 0%, 2%, 4% and 6% Concentrations of RuO2 as an Arduino Nano-Based Bad Breath Sensor

Chemosensors ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 3
Author(s):  
Irzaman ◽  
Ridwan Siskandar ◽  
Brian Yuliarto ◽  
Mochammad Zakki Fahmi ◽  
Ferdiansjah
Keyword(s):  
Silicon Substrate ◽  
Spin Coating ◽  
Chemical Solution Deposition ◽  
Voltage Response ◽  
Chemical Solution ◽  
Solution Deposition ◽  
Op Amp ◽  
Electronic Circuitry ◽  
Voltage Output ◽  
Bad Breath

Ba0.5Sr0.5TiO3 (BST) film doped with variations in RuO2 concentration (0%, 2%, 4%, and 6%) has been successfully grown on a type-p silicon substrate (100) using the chemical solution deposition (CSD) method and spin-coating at a speed of 3000 rpm for 30 s. The film on the substrate was then heated at 850 °C for 15 h. The sensitivity of BST film + RuO2 variations as a gas sensor were characterized. The sensitivity characterization was assisted by various electronic circuitry with the purpose of producing a sensor that is very sensitive to gas. The responses from the BST film + RuO2 variation were varied, depending on the concentration of the RuO2 dope. BST film doped with 6% RuO2 had a very good response to halitosis gases; therefore, this film was applied as the Arduino-Nano-based bad-breath detecting sensor. Before it was integrated with the microcontroller, the voltage output of the BST film was amplified using an op-amp circuit to make the voltage output from the BST film readable to the microcontroller. The changes in the voltage response were then shown on the prototype display. If the voltage output was ≤12.9 mV, the display would read “bad breath”. If the voltage output >42.1 mV, the display would read “fragrant”. If 12.9 mV < voltage output ≤ 42.1 mV, the display would read “normal”.

Temple of Zeus: A Micro Replica

2009 ◽  
Author(s):  
Aditya N. Das ◽  
Rakesh Murthy
Keyword(s):  
Light Source ◽  
High Precision ◽  
Silicon Substrate ◽  
Epoxy Adhesive ◽  
Silicon On Insulator ◽  
Etching Process ◽  
Ion Etching ◽  
Cost Efficient ◽  
Micro Structures ◽  
Microassembly Robot

A miniature replica of “Temple of Zeus” has been built on a 1cm2 silicon die. The micro components have been fabricated on SOI (silicon-on-insulator) wafer using photolithography patterning and DRIE (deep-reaction-ion-etching) process. These micro components have been picked up and manipulated using a vacuum micro needle mounted on a high precision microassembly robot. After alignment the components are bonded to the silicon substrate using epoxy adhesive. A spherical sapphire lens has also been mounted on a micro tower made of silicon. This lens acts as a light source which illuminates the micro temple by diffusing a ray of light onto it. This micro replica of “Temple of Zeus” and other micro structures as well, have been built as a part of research on automated 3D microassembly at ARRI’s Texas Microfactory which demonstrates the versatility in developing robust, cost efficient and heterogeneous microsystems of future.

Multi-Layer Microstructure of Sol-Gel Barium Titanate Thin Films for Optical Waveguide Applications

2015 ◽  
Vol 815 ◽  
pp. 136-140
Author(s):  
S.H. Najamudin ◽  
H.Mohd Yusof ◽  
Ala’eddin A. Saif ◽  
R.A. Osman ◽  
P. Poopalan
Keyword(s):  
Thin Films ◽  
Surface Roughness ◽  
Barium Titanate ◽  
Optical Waveguide ◽  
Spin Coating ◽  
Sol Gel ◽  
Xrd Analysis ◽  
Diffraction Intensity ◽  
Number Of Layers ◽  
Crucial Part

— Barium titanate (BaTiO3) thin films are suitable for many application especially photonics. BaTiO3thin films are deposited using spin coating with an optimum spin speed of 4500rpm. The samples are then characterized using XRD, AFM and SEM. The results of the XRD analysis showed that both the 5-and 10-coated layers are polycrystalline BaTiO3with differences in terms of diffraction intensity, due to the number of layers. As for optical application, the surface roughness is the most crucial part. The number of layers of 5 and 10 have thickness of 2.927nm and 4.456nm RMS.

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