UV Flow Cell Water Disinfection
Today, UV assisted water filtration is a standard practice, but bulky mercury lamps are used. The former are not portable, require line voltage, and cannot be used at faucet level. Dot Metrics Technologies has developed an environmentally friendly prototype UV disinfection platform that provides portability, low power requirement and compact size that can be used in numerous industries. A few examples of potential applications are: water tower cooling, water disinfection in the areas of the world with chronic deficiencies of potable water, water disinfection in disaster recovery efforts, gray water recycling, and point of use disinfection in health care. UV LEDs are significantly smaller than Hg lamps and can be packaged in watertight packages, faucet tips as well as pipe applications. UV LEDs operate at ~6V/20mA and are ideal for battery/solar powered applications; they do not contain Hg and are an environmentally friendly alternative to traditional Hg lamps; they do not contain heavy metals and they do not require special handling/disposal. UV LEDs are more robust than fragile quartz tube lamps; they fade away and do not burn out. Individual chips last up to 1000 hours, and provide < 2mW optical power. Multi chip clusters can be used where more optical power is required.
Quantun Dot LED Technology
Using highly efficient deep green colloidal CdSe quantum dot emitters, Dot Metrics Technologies of Charlotte, NC has successfully integrated colloidal quantum dots as the active layer in a GaN heterostructure to create a LED. This device represents a novel approach and innovation in the fabrication of LEDs, and this design concept may be used to develop efficient LEDs across the entire color spectrum.
All color displays from cell phones to televisions are based on a red, green, and blue (RGB) color scheme. Highly efficient light emitting diodes (LEDs) can be manufactured which emit either red or blue light at opposite ends of the visible spectrum. Until the Dot Metrics innovation, there is no material for use in standard LED manufacturing that provides efficient deep green (555-585nm) emission in the middle of the visible spectrum.
Current technology is limited by the lack of an efficient deep green LED, but this revolutionary new approach to LED manufacturing circumvents the material limitations of a traditional LED design. With the successful development of this new LED chip Dot Metrics Technologies has opened the door to many applications considered unfeasible due to lack of an efficient green device.