KW
K.Y. Wong
24 records found
1
Overdriving reliability of chip scale packaged LEDs
Quantitatively analyzing the impact of component
The objective of this study is to quantitatively evaluate the impacts of LED components on the overdriving reliability of high power white LED chip scale packages (CSPs). The reliability tests under room temperature are conducted over 1000 h in this study on CSP LEDs with overdri
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Using the analogue of the electric inductance, we reveal the properties of the thermal inductance in GaN-based light-emitting diode devices by testing their transient thermal behaviors. We find that the devices exhibit a transient thermal response under step-down or step-up curre
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Gas sensors fabricated with nanowires as the detecting elements are powerful due to their many improved characteristics such as high surface-to-volume ratios, ultrasensitivity, higher selectivity, low power consumption, and fast response. This paper gives an overview on the recen
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We proposed a molecular modeling methodology to study the protonic acid doping of emeraldine base polyaniline which can be used in gas detection. The commerical forcefield COMPASS was used for the polymer and protonic acid molecules. The molecular model, which is capable of repre
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We presented a molecular model to investigate the relationship between macroscopic conductivity and charge carrier density in polyaniline (PANI) as chemical sensing materials. It was demonstrated that the conductivity in polyaniline depends on the charge carrier density. The char
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This chapter aims at developing molecular modeling methodology to select a thiol-based self assembly monolayer (SAM) as a coupling agent for achieving a reliable epoxy-copper interfacial adhesion under moisture conditions. Moisture diffusion and interfacial energy is evaluated us
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We report a molecular modelling study to validate the forcefields [condensed-phase optimised molecular potentials for atomistic simulation studies (COMPASS) and polymer-consistent forcefield (PCFF)] in predicting the physical and thermophysical properties of polymers. This work c
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We report a molecular modeling study to evaluate and select conducting polymers (CPs) for use as the sensing layer for carbon dioxide (CO2) sensor. The interactions between gases and sensing materials and the adsorptions of small gas molecules on polymer sensing films are describ
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