IGNOU MPHE 27 2026 - Explain with examples, what are Janus particles. Which synthesis metho

Question

Explain with examples, what are Janus particles. Which synthesis methods can be used to form such particles?

19 Jan 2026

Answer :

Word Count : 258

Janus particles are a class of nanomaterials characterized by having two or more distinct physical or chemical properties on different sides or faces of a single particle. This asymmetry gives them unique surface functionalities, making them highly useful in applications such as drug delivery, self-assembly, catalysis, and emulsion stabilization. For example, a typical Janus particle may have one side hydrophilic (water-attracting) and the other hydrophobic (water-repelling), allowing it to stabilize oil-water interfaces in Pickering emulsions. Another example includes magnetic Janus nanoparticles where one side contains

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