Researchers at Heriot-Watt are developing a tamper-proof hologram that could change serial numbers and barcodes, reducing the trade in counterfeit goods. It is being possible with the use of the ultraviolet (UV) nanosecond-pulsed laser. UV range laser can record unique holograms with micro-sized features directly on the surface of metals, making them tamperproof.
UV laser product marking is applied with a high precision and accuracy over time, without delays and downtime of packaging lines. Marking with the usage of the ultraviolet laser is reading by control systems, tracking through the supply chain and enabling manufacturers to contend with counterfeit and product tampering.
The hologram`s structure are formed at the expense of melting or evaporation. The shape and geometry of the hologram pixels can influence the optical performance of the holographic structure. In order to receive the maximum efficiency (contrast) of the image, the pixels must have a certain depth and optically smooth base.
Scientists established that UV range pulsed lasers can create the holograms on a variety of metals.
Now work in progress of implementing size reduction project and improving hologram`s effectiveness. Also, it`s needed to explore whether else can apply them to other materials. Particularly, we have advanced the process for use of such holograms on glass.
Furthermore, UV range pulsed lasers are highly suitable for scientific and industrial implementations as well as OEM applications and other projects that require micro-precision machining. Nowadays, companies provide complete laser systems sets with power supply and laser in a compact package.Laser processes are high quality, high precision, easily-automated manufacturing solutions that provide repeatability and flexibility.
