Growth of Boric Acid Structures

• Growth of a B/C/O thin film by PE-CVD B(OCH3)3 (TMB) as precursor
• Expose the film under controlled humid atmosphere

Mg2B2O5 Nanowires

Properties of bulk material:

• Excellent mechanical properties
• High resistance to corrosion
• Thermo-luminescence phosphor
• Ferroelastic material

References: Synthesis of magnesium borate (Mg2B2O5) nanowires by chemical vapor deposition method, Yan Li, Zhiyong Fan, Jia G. Lu and R. P. H. Chang, Chem. Mater, 2004, 16, 2512.

Mg2B2O5 Nanowires

Properties of bulk material:

• Excellent mechanical properties
• High resistance to corrosion
• Thermo-luminescence phosphor
• Ferroelastic material

References: Synthesis of magnesium borate (Mg2B2O5) nanowires by chemical vapor deposition method, Yan Li, Zhiyong Fan, Jia G. Lu and R. P. H. Chang, Chem. Mater, 2004, 16, 2512.

Mg2B2O5 Nanowires

Properties of bulk material:

• Excellent mechanical properties
• High resistance to corrosion
• Thermo-luminescence phosphor
• Ferroelastic material

References: Synthesis of magnesium borate (Mg2B2O5) nanowires by chemical vapor deposition method, Yan Li, Zhiyong Fan, Jia G. Lu and R. P. H. Chang, Chem. Mater, 2004, 16, 2512.

Photonic bandgap phenomenon

This slide and the following slide show representative images of zinc oxide photonic crystals at various scales. Because of their structure at the nanometer scale, they allow certain frequencies (colors) of light to pass but reflect others. This phenomenon is known as a photonic bandgap. This image is shown at the scale of 1µm.

References: Larry Aagesen, 2005

Photonic bandgap phenomenon

This image of zinc oxide photonic crystals is shown at the scale of 10µm.

References: Larry Aagesen, 2005

Cu2O nanodots on LaAlO3 (001) grown by metal-organic chemical vapor deposition (close-ups in next slides)

Left: scanning electron microscope image (above) and atomic force microscope image (below). Arrows show the base edges of the dots align with two orthogonal directions.

Right: X-ray diffractions of (above) q -2q scan along LaAlO3 (001) specular rod and (below) f-scan through Cu2O {022} and LaAlO3 {022} peaks. Inset is a Cu2O (002) rocking curve with a FWHM of 0.40°.

References: Haitao Zhang and Duane M. Goodner, 2003-2004

Cu2O nanodots on LaAlO3 (001) grown by metal-organic chemical vapor deposition

A close-up of scanning electron microscope image. Arrows show the base edges of the dots align with two orthogonal directions.

References: Haitao Zhang and Duane M. Goodner, 2003-2004

Cu2O nanodots on LaAlO3 (001) grown by metal-organic chemical vapor deposition

A close-up of atomic force microscope image

References: Haitao Zhang and Duane M. Goodner, 2003-2004

Cu2O nanodots on LaAlO3 (001) grown by metal-organic chemical vapor deposition

X-ray diffractions of q -2q scan along LaAlO3 (001) specular rod. Inset is a Cu2O (002) rocking curve with a FWHM of 0.40°.

References: Haitao Zhang and Duane M. Goodner, 2003-2004

Cu2O nanodots on LaAlO3 (001) grown by metal-organic chemical vapor deposition

X-ray diffractions of f-scan through Cu2O {022} and LaAlO3 {022} peaks. Inset is a Cu2O (002) rocking curve with a FWHM of 0.40°.

References: Haitao Zhang and Duane M. Goodner, 2003-2004