This science outreach includes:

1. Liquid Nitrogen and Freezing Temperature
2. Cryostats and Balloons
3. Chemical Fountain
4. Fire on Water
5. Microscopy
6. Sand on Sound
7. Laser Spirograph

For Registration please email at info@khwarizmi.org

The Map is here:

This activity in Lahore is part of KSS's National Science Movement 2016. The activities includes:

1. Solar Observation
2. Liquid Nitrogen and Elasticity of Objects
3. Cryostats and Balloons
4. Chemical Fountain
5. Sodium Blast
6. Sand on Sound
7. Laser Spirograph
8. Microworld from Microscope

For registration please email at info@khwarizmi.org

The Map is here:

Demonstration of fascinating science experiments for school children. The experiments include

• Levitation of supermagnets in proximity with superconductors
• Properties of liquid nitrogen
• Observing microbes and tissues under a microscope
• Chemical fountain
• Sodium blast
• Dancing sand
• Generating rose patterns from lasers
• Properties of laser light
• Biomaterials

Another fascinating and exciting science exhibition is organised at the Central Model School, Lower Mall Lahore. The map is below:

This science mela is part of Khwarizmi Science Society's National Science Movement 2016 and Beyond.

Semiconductor nanowires (NWs) are attracting wide interest due to their unique physical properties and potential for application in nanodevices. NWs can be obtained by a number of growth methods, and their highly anisotropic growth originates by the presence of a metal particle, the catalyst, that determines the position and the diameter of the nanostructure. The most widely used catalyst is gold. The growth mechanism of catalyst assisted nanowires involves the incorporation of material both impinging on the catalyst particle and diffusing from the free substrate surface to the sidewalls of the wire. The interplay of these two phenomena is critical especially for the growth of alloy semiconductor compound NWs and one dimensional (1-D) heterostructure. Difference in the surface mobility between the constituents could give compositional inhomogeneities in alloy NWs and degradation of the interface sharpness in 1-D heterostructure. The systematic presence of a metal particle at the NWs tip could be exploited in single NW devices. Moreover, one of the most interesting characteristic of the III-V NWs grown by catalyst assisted self assembling is the peculiarity of having an hexagonal lattice structure (wurtzite), while their bulk and epitaxial parent materials have the cubic structure (zinc blend). In our laboratory we have synthesized GaAs NWs by molecular beam epitaxy (MBE) either using a thin gold, manganese, Ga layer as the growth catalyst or without any catalyst. In this talk some of the basics of NWs, their growth and potential applications will be covered.

Powder X-Ray Diffraction is now a common technique used in the structure determination of different crystals. Read this Article on the Workshop on structure determination using powder X-ray diffraction.