Wireless Visible Light Communication (VLC) is enabled by Light Emitting Diodes (LED) and their ability to switch on/off at tens of MHz without flickering. Visible Light Communication offers significant advantages over Radio Frequency (RF) based wireless communication.
- Optical spectrum offers a bandwidth upto 300 THz thereby allowing for streaming at multiple gigabits per second.
- Data rates can be boosted with more emission power without harm to human beings.
- Unable to penetrate walls, VLC is inherently secure.
- Being interference free, VLC can co-exist with and complement existing RF technology.
- VLC devices are inexpensive compared to multi-gigahertz RF devices.
Current VLC systems are essentially Lego-type testbeds that have significant disadvantages. These include:
- Large size and complex electronics.
- Low performance, low reliability and high cost.
Prof. Wang at UCR has developed a patented, system-in-a-package (SIP) and system-on-a-chip (SoC) architecture for VLC that integrates all the electronic circuits with the LEDs and photodetectors (PD) to make VLC and Visible Light Positioning (VLP) systems with integrated optoelectronics.
VLC/VLP scenario in an RF prohibited hospital.
VLC/VLP scenario for smart traffic control.
The novel aspects and benefits of their invention are:
- The existence of a 1-2 nm thickness, native SiO2 shell on all the Silicon nanoparticles (SiNP) serves to mitigate volume expansion effects during lithiation.
- The diameter of the SiNPs are 8 – 25 nm, well below the critical dimension.
- Reduced bulk diffusion length for Lithium.
- Excellent electrochemical stability and high degree of scalability.
- No carbon black, metallic current collectors or polymer binders.
- Magnesiothermic reduction process requires lower operating temperatures (700 deg. C).
Lithium-ion and Lithium-Silicon batteries
- Name: Venkata Krishnamurty
- Title :
- Department :
- Email: email@example.com
- Phone :
- Address :