Manufacturing Industry
Nano-etched cavity makes LEDs seven times brighter.(EMERGING TECHNOLOGY)
Advanced Materials & Processes, November, 2006
Semiconductor light-emitting diodes more than seven times brighter than conventional LEDs have been made by researchers at the National Institute of Standards and Technology, Gaithersburg, Md. The brightest output was achieved with ten grooves, each about 240 nm wide and 150 nm deep, and spaced 40 nm apart.
The grooves are made by etching nanoscale grooves in a surrounding cavity to guide scattered light in one direction. The NIST nanostructured cavity boosts useful LED emission to about 41% and may be cheaper and more effective for some applications than conventional post-processing LED shaping and packaging methods that attempt to redirect light. For more information: Richard Mirin, NIST, 325 Broadway, Boulder, CO 80305-3328; tel: 303/497-7955; www.nist.gov....
Most Recent Business Articles
- Multiple criteria evaluation and optimization of transportation systems
- Multi-criteria analysis procedure for sustainable mobility evaluation in urban areas
- A two-leveled multi-objective symbiotic evolutionary algorithm for the hub and spoke location problem
- Multi-criteria analysis for evaluating the impacts of intelligent speed adaptation
- The development of Taiwan arterial traffic-adaptive signal control system and its field test: a Taiwan experience
Most Recent Business Publications
Most Popular Business Articles
- 7 tips for effective listening: productive listening does not occur naturally. It requires hard work and practice - Back To Basics - effective listening is a crucial skill for internal auditors
- FAS 109: a primer for non-accountants - Financial Accounting Standards Board's "Statement 109: Accounting for Income Taxes"
- Design a commission plan that drives sales - Sales Commissions
- Too Young to Rent a Car? - 25-years-old the minimum age for car renting - Brief Article
- LIFO vs. FIFO: a return to the basics
