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Metallic Solids02:37

Metallic Solids

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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and...
21.6K

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Functionalization of metallic glasses through hierarchical patterning.

Molla Hasan1, Jan Schroers, Golden Kumar

  • 1Department of Mechanical Engineering, Texas Tech University , Lubbock, Texas 79409, United States.

Nano Letters
|January 7, 2015
PubMed
Summary

We developed a novel sequential embossing method to precisely pattern metallic glasses at various scales. This technique enables intricate surface engineering for advanced materials and devices.

Keywords:
Metallic glassfunctional surfaceshierarchical patternsthermoplastic embossingwetting

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Area of Science:

  • Materials Science
  • Surface Engineering
  • Nanotechnology

Background:

  • Surface engineering across multiple length scales is crucial for advanced applications in electronics, photonics, and creating multifunctional synthetic materials.
  • Controlling surface topography and properties is key to enhancing material performance and enabling new functionalities.

Purpose of the Study:

  • To demonstrate a sequential embossing technique for creating multi-tier patterns in metallic glasses.
  • To achieve precise control over surface properties by manipulating feature sizes from sub-100 nm to millimeters.
  • To integrate this patterning method with net-shaping for application on 3D metal parts.

Main Methods:

  • Utilizing a sequential embossing technique based on the size-dependent thermoplastic forming of metallic glasses.
  • Sculpting features across a wide range of dimensions, from nanoscale to millimeter scale.
  • Integrating the embossing process with net-shaping manufacturing.

Main Results:

  • Successfully created multi-tier patterns in metallic glasses with exquisite control over surface properties.
  • Demonstrated the ability to pattern features ranging from sub-100 nm to millimeter sizes sequentially.
  • Showcased the integration of the technique with net-shaping for 3D applications.

Conclusions:

  • The sequential embossing technique offers a versatile approach for advanced surface engineering of metallic glasses.
  • This method allows for the precise fabrication of complex surface topographies critical for next-generation electronics and photonics.
  • The integration with net-shaping expands the applicability to functional 3D metallic components.