What Are the Applications and Utilizations of Ultraviolet (UV) Light?

UV LED lights are improving disinfection, nail care, health, beauty, and forensic science. Continue reading to see how the distinctive features of UV light impact multiple disciplines.
Ultraviolet (UV) light is a form of electromagnetic radiation characterized by a wavelength shorter than that of visible light. Ultraviolet light is categorized into three types based on wavelength: UV-A, UV-B, and UV-C.
Despite being imperceptible to the human sight, ultraviolet light possesses considerable applicability across several domains, and the advent of UV LED lights has further broadened these applications. Today, we will examine many applications of UV LED lighting.

What Are Ultraviolet Lights?

Ultraviolet (UV) light is an imperceptible type of electromagnetic radiation that propagates at a higher frequency and possesses greater energy than visible light. Upon its initial discovery in the 19th century, ultraviolet light was termed "chemical rays" due to its ability to induce molecular alterations in specific substances.
Prior to 2010, UV LED lights were not commercially accessible. As LED technology advances, UV LED lights have penetrated the market and are being utilized across diverse sectors, including beauty and healthcare.
Each distinct frequency of UV light possesses unique uses throughout several sectors. For instance, UV-A is utilized in nail care, whilst UV-B and UV-C are employed for sterilizing and medical light therapy.
 

Below are many instances of the numerous applications of UV LED lights:

Industrial and Aesthetic Preservation
UV LED bulb utilized for manicure curing
UV curing is a method that use ultraviolet light to rapidly cure or "dry" inks, coatings, adhesives, resins, and polymers, allowing them to harden without the application of heat.
Years ago, nail paint treatments were conducted with unregulated ultraviolet lights. In 2013, a research published in the Journal of the American Academy of Dermatology indicated a potential risk of skin cancer. The research indicated that LED lamps were significantly safer for this application owing to their reduced light frequency.
UV-A is the specific form of UV LED light suitable for nails and safe for skin exposure, making our lights optimal for the production of lamps utilized in nail salons.
 

Analytical Instruments

Footprint exposed by ultraviolet light at a crime scene.

Another application of UV light is the employment of UV analysis lamps to excite the electrons of analyzed substances, resulting in luminescence and rendering certain materials visible to the human eye. Certain substances and fluids that respond to UV light by exhibiting fluorescence or altering color include:
Invisible or security inks are employed on banknotes, identification documents, and credit cards to verify their authenticity. These inks comprise elements that fluoresce under ultraviolet light.
Blood and bodily fluids: Certain fluids, including saliva and sweat, exhibit fluorescence under ultraviolet light, aiding forensic investigators in uncovering evidence at crime scenes.
Fibers and materials: Numerous natural and manufactured fibers exhibit luminescence under UV light, facilitating the identification of fabric or clothing remnants.
Specialized dyes and resins are employed to identify expensive objects or documents, rendering markings visible solely under UV light, so aiding in the detection of forgeries or theft.
 

Gemology

Ultraviolet (UV) light is a crucial instrument in gemology, enabling mineral and stone collectors to detect and authenticate gems and minerals. Experts can differentiate natural gems from manufactured or artificially treated stones by examining the fluorescence emitted by some gems, such as diamonds and rubies, under UV light.
Moreover, collectors utilize it to detect and categorize fluorescent minerals, such calcite and fluorite, which emit luminescence under ultraviolet light.
Mineral luminescent under UV illumination Medical apparatus undergoing disinfection with ultraviolet light.
 

Sterilization and Disinfection

The medical sector employs UV-C radiation, an exemplary option for air and water cleansing. This process transpires as elevated radiation obliterates the genetic material of microorganisms, including viruses and bacteria, hence inhibiting their ability to infect humans. This form of disinfection employs ultraviolet light in the food processing and healthcare industries, among others.
Indeed, this is one rationale behind the recommendation to dry clothing in sunlight; besides conserving energy by circumventing electric dryers, natural UV light eradicates potentially hazardous microorganisms on garments.
 

Indoor Horticulture

Indoor garden featuring plants cultivated under ultraviolet light.
UV LED lights are essential in indoor urban horticulture for cultivating fruits, vegetables, and other consumable plants. UV LED lights enhance the synthesis of polyphenols, which are thought to possess antioxidant and anti-aging properties.
Besides edible gardening, UV lights have advantageous uses for resin-producing plants like medical marijuana by enhancing the potency of its medicinal attributes and promoting the synthesis of therapeutic compounds.