• Home
  • About Us
    • Member Directory
    • Contact Us
  • Blogs
    • Scientific Blogs
      • Technology
      • Environment
      • Health
    • Infinity Explorer
    • Traveler Book
    • Life Around
  • Publication
  • Scientific Advisory
  • Project
    • Future Projects
    • Ongoing Projects
    • Previous Projects
  • Services
    • Language Programs
    • Latest Software
    • Environmental Consultancy
    • Internship
    • Exercise
  • Career
    • Masters
    • PHDs
    • Postdoctorals
    • Travel Grants
    • Others

A new age of 2.5D materials

A new age of 2.5D materials

Share:

Twitter
Tweet
LinkedIn
Share
Facebook
fb-share-icon
WeChat
Follow by Email
Hardin Bitsky

Hardin Bitsky

Mr. Hardin, a future doctor of pharmacy, provides services as a content writer for scientific and technical niches.

Scientists are exploring new ways to artificially stack two-dimensional (2D) materials, introducing so-called 2.5D materials with unique physical properties. Researchers in Japan reviewed the latest advances and applications of 2.5D materials in the journal Science and Technology of Advanced Materials.

“The 2.5D concept symbolizes freedom from the composition, materials, angles and space typically used in 2D materials research,” explains nanomaterials scientist and lead author Hiroki Ago of Kyushu University in Japan.

2D materials, like graphene, consist of a single layer of atoms and are used in applications like flexible touch panels, integrated circuits and sensors.

Recently, new methods have been introduced to make it possible to artificially stack 2D materials vertically, in-plane or at twisted angles regardless of their compositions and structures. This is thanks to the ability to control the van der Waals forces: weak electric interactions between atoms and molecules, similar to a microfiber cloth’s attraction of dust. It is also now possible to integrate 2D materials with other dimensional materials, such as ions, nanotubes and bulk crystals.

A common method for fabricating 2.5D materials is chemical vapor deposition (CVD), which deposits a layer, one atom or molecule at a time, onto a solid surface. Commonly used building blocks for 2.5D materials include graphene, hexagonal boron nitride (hBN) (a compound used in cosmetics and aeronautics), and transition metal dichalcogenides (TMDCs) (a nanosheet semiconductor).

Using the CVD method, researchers selectively synthesized a bilayer of graphene, the simplest form of a 2.5D material, using a copper-nickel foil with relatively high nickel concentration as a catalyst. Nickel makes carbon highly soluble, giving researchers more control over the number of graphene layers. When an electrical field was applied vertically across the bilayer of graphene, it opened a band gap, meaning that its conductivity can be turned on and off. This is a phenomenon that is not observed in monolayer graphene because it has no band gap and stays on all the time. By tilting the stacking angle one degree, scientists found that the material became superconducting.

Similarly, another group in the UK and the US found that a layer of graphene and hBN results in the quantum Hall effect, a conduction phenomenon involving a magnetic field that produces a difference of potential. Others showed that stacking TMDCs traps excitons (electrons paired with their associated holes in a bound state) in the overlapping lattice patterns. This can lead to applications in information storage devices. New robotic assembly techniques have also made it possible to build more complex vertical structures, including a stacked heterostructure consisting of 29 alternating layers of graphene and hBN, for example.

Other research has used the nanospaces that form between the layers of a 2.5D material to insert molecules and ions in order to improve the electrical, magnetic and optical properties of the host material.

So far, for example, researchers have found that graphene stabilizes iron chloride when it is inserted between its stacked layers, while inserting lithium ions leads to a faster diffusion rate (how quickly molecules spread in an area) than that of graphite, an electrical conductor used in batteries. This implies the material could be used in high-performance rechargeable batteries.

Additionally, researchers found that inserting aluminum chloride molecules between two graphene sheets leads to the formation of new crystalline structures that are completely different from the bulk aluminum chloride crystal. More research is needed to understand why this happens and what applications it might have.

“There are many opportunities to explore with this new 2.5D concept,” Ago says.

Future applications of 2.5D materials include solar cells, batteries, flexible devices, quantum devices, and devices with very low energy consumption.

The next steps should incorporate machine learning, deep learning and materials informatics in order to further advance the design and synthesis of 2.5D materials.

Related article:

Novel Method for Developing Dimension-Controlled Carbon Nanostructures

This software differentiates authentic images from deepfakes

Read more

PrevPreviousBiomolecular insights into protein-insolubility-related disease
NextA step forward in modern quantum technology: Frequency conversion of single photons at arbitrary wavelengthsNext

LATEST Blogs

Breakfast and health problems

Skipping Breakfast May Increase a Child’s Risk of Psychosocial Health Problems

September 7, 2022
James webb telescope

NASA’s Webb Space Telescope Captures a Cosmic Tarantula

September 7, 2022

Worse Than Smoking – Bad Sleep Can Worsen Lung Disease

August 31, 2022
Nanotechnology

Dr. Muhammad Adeel Addressed the International Con-ference as keynote speaker

August 23, 2022
Benefits of Mushrooms

Top 10 Health Benefits of Mushrooms, the Ultimate Superfood

August 18, 2022

New Way Invented To Produce Oxygen on Mars for Future Explorers

August 18, 2022

Evidence of Unprecedented Modern Sea-Level Rise Found in Ancient Caves

August 18, 2022

Research Shows Salt Substitutes Lower Risk of Heart Attack/Stroke and Death

August 13, 2022
covid symptoms

Hair Loss and Sexual Dysfunction Join Fatigue and Brain Fog in List of Long COVID Symptoms

August 13, 2022
protein

Most People Are Eating Too Much Protein – And It Has Serious Consequences

August 13, 2022

Categories

  • Scientific Blogs
  • Infinity Explorer
  • Traveler Book
  • Life Around

If you have tried to make a difference and you believe you deserve to be acknowledge, then please submit your story to us

Subscribe

Virtual Green Innovation Hub (VGI-H) is an emerging platform for young researchers which works as a bridge between You and the society.

Useful Links

Home
About us
Blogs

Subscribe Now

Don’t miss our future updates! Get Subscribed Today!

Copyright ©2022 Virtual Green Innovation Hub. All Rights Reserved.

Don’t miss our future updates. Get Subscribed Today!