Dr Abhay Kumar Singh, Ph.D., is Senior Research Associate in the Faculty of Engineering & the Built Environment Dean's Office of the University of Johannesburg, South Africa. His research focuses on various forms of chalcogenide lead materials, including chalcogenide glasses, chalcogenide nanomaterials and organic-inorganic composite materials, among others.

• 1. Basics of TMDs.- 2. Fabrication approaches of TMDs.- 3. Structures and defects of TMDs.- 4. 2D TMDs properties.- 5. Spin-Valley coupling in TMDs.- 5. Heterostructures.

Dr Abhay Kumar Singh, Ph.D., is Senior Research Associate in the Faculty of Engineering & the Built Environment Dean's Office of the University of Johannesburg, South Africa. His research focuses on various forms of chalcogenide lead materials, including chalcogenide glasses, chalcogenide nanomaterials and organic-inorganic composite materials, among others.

• 1. Basics of TMDs.- 2. Fabrication approaches of TMDs.- 3. Structures and defects of TMDs.- 4. 2D TMDs properties.- 5. Spin-Valley coupling in TMDs.- 5. Heterostructures.

Dr Abhay Kumar Singh, Ph.D., is Senior Research Associate in the Faculty of Engineering & the Built Environment Dean's Office of the University of Johannesburg, South Africa. His research focuses on various forms of chalcogenide lead materials, including chalcogenide glasses, chalcogenide nanomaterials and organic-inorganic composite materials, among others.

• 1. Basics of TMDs.- 2. Fabrication approaches of TMDs.- 3. Structures and defects of TMDs.- 4. 2D TMDs properties.- 5. Spin-Valley coupling in TMDs.- 5. Heterostructures.