Controlled buckling of semiconductor nanoribbons for stretchable electronics

Area of Science:

• Materials Science and Engineering
• Nanotechnology
• Solid-State Physics

Background:

• Precise control over semiconductor nanostructure geometry is crucial for advanced applications.
• Existing methods for creating complex 3D nanostructures are often limited or challenging.

Purpose of the Study:

• To introduce a novel mechanical strategy for fabricating complex 3D shapes in semiconductor nanoribbons.
• To demonstrate the potential of these structures for creating highly deformable electronic and optoelectronic devices.

Main Methods:

• Utilized lithographically patterned surface chemistry to define adhesion sites.
• Employed elastic substrate deformations to induce controlled local displacements in nanoribbons.
• Applied analytical models to quantitatively describe the resulting buckling geometries.

Main Results:

• Successfully created precisely engineered buckling geometries in gallium arsenide (GaAs) and silicon (Si) nanoribbons.
• Demonstrated that these 3D nanoribbon structures can achieve extreme stretchability (up to ~100%) and compressibility (up to ~25%).
• Showcased high bendability with achievable curvature radii as small as ~5 mm.

Conclusions:

• The reported mechanical strategy offers a versatile route to complex 3D nanoribbon configurations.
• These engineered nanostructures pave the way for next-generation stretchable, compressible, and bendable electronics and optoelectronics.