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Volume 4

Beyond Graphene

The Rise of Mono-elemental 2D X-enes and Quantum Materials

The age of carbon-only nanotechnology is over—meet the 2D materials rewriting the laws of physics.

Strategic Objectives

• Master the unique buckled structures of silicene, germanene, and stanene.

• Understand the stabilization strategies required for non-carbon atomic layers.

• Explore the quantum Hall effect and topological insulation in 2D sheets.

• Identify high-performance applications in transistors, sensors, and energy storage.

The Core Challenge

While graphene revolutionized electronics, its lack of a natural bandgap and difficulty in functionalization limit its potential in next-generation devices.

01

The Post-Graphene Landscape

02

Defining the X-enes

03

The Buckled Lattice

04

Silicene: Silicon’s New Form

05

Germanene Developments

06

Stanene and Topological Insulators

07

Phosphorene: The Semiconductor King

08

Borophene: The Metallic Wonder

09

Plumbene: The Heavyweight Contender

10

Synthesis by Epitaxy

11

Chemical Vapor Deposition

12

Stability and Encapsulation

13

Substrate Engineering

14

The Quantum Spin Hall Effect

15

Excitons in 2D Systems

16

Functionalization Strategies

17

Electronic Bandgap Engineering

18

Field-Effect Transistors

19

Energy Storage and Catalysis

20

Characterization Techniques

21

Future Horizons of X-ene Research

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