Preparation of well-defined polymer-silicon wafer hybrids via surface-initiated RAFT-mediated process

2008 ◽  
Vol 254 (9) ◽  
pp. 2600-2604 ◽  
Author(s):  
Liang Li ◽  
Entang Kang ◽  
Koongee Neoh
Keyword(s):  
Silicon Wafer

Development of Silicon Wafer Packaging Technology for Deep UV LED

2020 ◽  
Vol 140 (7) ◽  
pp. 152-157
Author(s):  
Hirofumi Chiba ◽  
Yukio Suzuki ◽  
Yoshiaki Yasuda ◽  
Mitsuyasu Kumagai ◽  
Takaaki Koyama ◽  
...  
Keyword(s):  
Silicon Wafer ◽  
Packaging Technology ◽  
Uv Led ◽  
Deep Uv

Modeling and Analyzing on Nonuniformity of Material Removal in Chemical Mechanical Polishing of Silicon Wafer

2004 ◽  
Vol 471-472 ◽  
pp. 26-31 ◽  
Author(s):  
Jian Xiu Su ◽  
Dong Ming Guo ◽  
Ren Ke Kang ◽  
Zhu Ji Jin ◽  
X.J. Li ◽  
...  
Keyword(s):  
Silicon Wafer ◽  
Chemical Mechanical Polishing ◽  
Material Removal ◽  
Mechanical Polishing ◽  
Wafer Surface ◽  
Removal Mechanism ◽  
Particle Movement ◽  
Material Removal Mechanism ◽  
The Relationship ◽  
Nonuniform Material

Chemical mechanical polishing (CMP) has already become a mainstream technology in global planarization of wafer, but the mechanism of nonuniform material removal has not been revealed. In this paper, the calculation of particle movement tracks on wafer surface was conducted by the motion relationship between the wafer and the polishing pad on a large-sized single head CMP machine. Based on the distribution of particle tracks on wafer surface, the model for the within-wafer-nonuniformity (WIWNU) of material removal was put forward. By the calculation and analysis, the relationship between the motion variables of the CMP machine and the WIWNU of material removal on wafer surface had been derived. This model can be used not only for predicting the WIWNU, but also for providing theoretical guide to the design of CMP equipment, selecting the motion variables of CMP and further understanding the material removal mechanism in wafer CMP.

scholarly journals The Influence of Wire Speed on Phase Transitions and Residual Stress in Single Crystal Silicon Wafers Sawn by Resin Bonded Diamond Wire Saw

Micromachines ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 429
Author(s):  
Tengyun Liu ◽  
Peiqi Ge ◽  
Wenbo Bi
Keyword(s):  
Residual Stress ◽  
Surface Layer ◽  
Phase Transitions ◽  
Single Crystal ◽  
Amorphous Silicon ◽  
Silicon Wafer ◽  
Single Crystal Silicon ◽  
Silicon Wafers ◽  
Crystal Silicon ◽  
Diamond Wire

Lower warp is required for the single crystal silicon wafers sawn by a fixed diamond wire saw with the thinness of a silicon wafer. The residual stress in the surface layer of the silicon wafer is the primary reason for warp, which is generated by the phase transitions, elastic-plastic deformation, and non-uniform distribution of thermal energy during wire sawing. In this paper, an experiment of multi-wire sawing single crystal silicon is carried out, and the Raman spectra technique is used to detect the phase transitions and residual stress in the surface layer of the silicon wafers. Three different wire speeds are used to study the effect of wire speed on phase transition and residual stress of the silicon wafers. The experimental results indicate that amorphous silicon is generated during resin bonded diamond wire sawing, of which the Raman peaks are at 178.9 cm−1 and 468.5 cm−1. The ratio of the amorphous silicon surface area and the surface area of a single crystal silicon, and the depth of amorphous silicon layer increases with the increasing of wire speed. This indicates that more amorphous silicon is generated. There is both compressive stress and tensile stress on the surface layer of the silicon wafer. The residual tensile stress is between 0 and 200 MPa, and the compressive stress is between 0 and 300 MPa for the experimental results of this paper. Moreover, the residual stress increases with the increase of wire speed, indicating more amorphous silicon generated as well.

Experimental investigation into polishing of monocrystalline silicon wafer using double-disc chemical assisted magnetorheological finishing process

2021 ◽  
pp. 095440622098384
Author(s):  
Mayank Srivastava ◽  
Pulak M Pandey
Keyword(s):  
Surface Roughness ◽  
Silicon Wafer ◽  
Flow Rate ◽  
Silicon Wafers ◽  
Monocrystalline Silicon ◽  
Slurry Flow ◽  
Magnetorheological Finishing ◽  
Finishing Process ◽  
Process Factors ◽  
Slurry Flow Rate

In the present work, a novel hybrid finishing process that combines the two preferred methods in industries, namely, chemical-mechanical polishing (CMP) and magneto-rheological finishing (MRF), has been used to polish monocrystalline silicon wafers. The experiments were carried out on an indigenously developed double-disc chemical assisted magnetorheological finishing (DDCAMRF) experimental setup. The central composite design (CCD) was used to plan the experiments in order to estimate the effect of various process factors, namely polishing speed, slurry flow rate, percentage CIP concentration, and working gap on the surface roughness ([Formula: see text]) by DDCAMRF process. The analysis of variance was carried out to determine and analyze the contribution of significant factors affecting the surface roughness of polished silicon wafer. The statistical investigation revealed that percentage CIP concentration with a contribution of 30.6% has the maximum influence on the process performance followed by working gap (21.4%), slurry flow rate (14.4%), and polishing speed (1.65%). The surface roughness of polished silicon wafers was measured by the 3 D optical profilometer. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) were carried out to understand the surface morphology of polished silicon wafer. It was found that the surface roughness of silicon wafer improved with the increase in polishing speed and slurry flow rate, whereas it was deteriorated with the increase in percentage CIP concentration and working gap.

In situ wireless measurement of grinding force in silicon wafer self-rotating grinding process

2021 ◽  
Vol 154 ◽  
pp. 107550
Author(s):  
Fei Qin ◽  
Lixiang Zhang ◽  
Pei Chen ◽  
Tong An ◽  
Yanwei Dai ◽  
...  
Keyword(s):  
Silicon Wafer ◽  
Grinding Force ◽  
Grinding Process ◽  
Wireless Measurement

scholarly journals Live Cell Migration Imaging on a Microfabricated Silicon Wafer

Hyomen Kagaku ◽  
2017 ◽  
Vol 38 (9) ◽  
pp. 473-478
Author(s):  
Hiroshi SUNAMI ◽  
Yusuke SHIMIZU ◽  
Ikuko YOKOTA ◽  
Yasuyuki IGARASHI ◽  
Hidehiro KISHIMOTO ◽  
...  
Keyword(s):  
Cell Migration ◽  
Silicon Wafer ◽  
Live Cell ◽  
Migration Imaging

Photocarriers dynamics in silicon wafer studied with optical-pump terahertz-probe spectroscopy

2012 ◽  
Vol 285 (20) ◽  
pp. 4102-4106 ◽  
Author(s):  
Gaofang Li ◽  
Dong Li ◽  
Zuanming Jin ◽  
Guohong Ma
Keyword(s):  
Silicon Wafer ◽  
Optical Pump ◽  
Probe Spectroscopy

Silicon-to-silicon wafer bonding using evaporated glass

1998 ◽  
Vol 70 (1-2) ◽  
pp. 179-184 ◽  
Author(s):  
Steen Weichel ◽  
Roger de Reus ◽  
Michael Lindahl
Keyword(s):  
Silicon Wafer ◽  
Wafer Bonding
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