Surface Coating / Alfa Chemistry

Customized Nanocoating on Semiconductor Substrate


Alfa Chemistry has a variety of surface chemistry technologies that can functionalize semiconductor substrates to make them highly hydrophobic, oleophobic, wetting, or other properties. Through our easy-to-apply surface treatment methods, the performance of almost any product that utilizes semiconductors can be improved. Together, we will functionalize your semiconductor substrate surface!

What Can We Offer?

Alfa Chemistry has the ability to functionalize various semiconductor surfaces. The services we can provide you include but are not limited to the following.

Light-Patterned Hydrophobic/Oleophobic Material

The semiconductor material can produce hydrophobic/oleophobic fine patterns on its surface by photolithography. Our unique surface service features include:

  • We can increase the hydrophobic/oleophobic properties by coating on various substrates
  • We can make hydrophobic/oleophobic patterns by photolithography
  • The film thickness we make is adjustable
  • We have two types: positive mode and negative mode

Please learn about our production process through the following examples:

Customized Nanocoating on Semiconductor SubstrateFig 1. The steps to provide hydrophobic fine patterns on silicon substrates by photolithography.

Precious Metal Modified 2D Substrate

Since the discovery of mechanically exfoliated graphene, the development of two-dimensional (2D) materials composed of atomically thin crystal layers bound by van der Waals forces has accelerated due to the potential applications of these materials in optoelectronics, catalysis, new technologies, and electricity. 2D-MoS2 nanosheets are excellent layered materials with unique layered structures and large surface areas. It is important to study ways to improve the chemical properties of MoS2, which may affect its applications in electronic devices, catalysis, and molecular sensing.

Alfa Chemistry can provide you with a way to improve the performance of MoS2: decorate MoS2 with precious metal nanoparticles. For example, MoS2/precious metal nanoparticle composites can induce local surface plasmon resonance (LSPR), which is used to activate H2 photocatalysis and enhance the light absorption or emission of MoS2. In addition, LSPR can generate surface-enhanced Raman scattering (SERS), It can be used in biological and chemical sensing applications.

Self-Healing Vitreous Coating with Long-Lasting Hydrophobicity

Alfa Chemistry uses nano-thick, perfluorinated polydimethylsiloxane glass body to prove durable and super-hydrophobicity. The ultra-thin (less than 100 nm) polydimethylsiloxane glass body film we constructed maintains excellent hydrophobicity and light transmission after scratching, cutting, and indentation. We show that polydimethylsiloxane vitreous films can be deposited on various semiconductor substrates by scalable dip coating.

Customized Nanocoating on Semiconductor SubstrateFig 2. The Self-healing of ultra-thin polydimethylsiloxane glass body coating. (Ma J. C, et al. 2021)

Learn About Industry Applications

Alfa Chemistry helps researchers meet all research, development and production needs. The following are some of the industries we cater to.

  • Aerospace
  • Solar, optical
  • Biomedicine, biotechnology
  • Medical devices and implants
  • Diagnosis and treatment
  • Energy storage and conversion
  • Government laboratories, universities
  • MEMS, instruments, sensors, microelectronics, displays

Why Choose Alfa Chemistry Custom Coatings Service on Semiconductor Substrates?

For many years, we have been developing and producing surface chemical technologies for modifying the surface of various semiconductor materials. We are committed to thousands of semiconductor surface protection applications and invest hundreds of thousands of hours to solve surface-related challenges. You may also face a challenge that can be solved by modifying the surface with various properties. We will tailor a waterproof solution for your product's unique needs. Contact us and let us help you improve your product.


  • Ma J. C, et al. (2021). "Ultra-thin self-healing vitrimer coatings for durable hydrophobicity." Nature Communications. 12: 5210.

Our products and services are for research use only and cannot be used for any clinical purpose.

Ask Your Question