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Article analysis:

The article is generally reliable and trustworthy in its presentation of information regarding the improvement of light extraction efficiency in InGaN based blue LEDS through multiple laser stealth dicing. The article provides a comprehensive overview of various techniques that have been used to improve the light extraction efficiency of LEDs, including roughening the p-GaN surface, laser scribing of sapphire substrate, femtosecond-laser-scribing technology, volcano-shaped patterned sapphire substrates, two-step surface roughening using KrF laser and chemical wet etching, deep hole patterned sapphire substrate by laser direct beam drilling and laser micromachining with inclined sidewall profile. The article also provides references for each technique discussed which adds to its credibility.

The only potential bias in this article is that it does not provide any counterarguments or explore any risks associated with these techniques for improving LED performance. It would be beneficial if the article had explored potential risks associated with these techniques such as damage to the LED structure or increased cost due to additional processing steps required for implementation. Additionally, it would be beneficial if the article had provided more detailed information on how each technique works and what advantages they offer over traditional methods for improving LED performance.