Crystal Exfoliation Technique
Crystal Exfoliation Technique - Related Videos
08:54
Synthesis and Exfoliation of Discotic Zirconium Phosphates to Obtain Colloidal Liquid Crystals
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Cited by 3 •
2016
A two dimensional model material of discotic zirconium phosphate was developed. The inorganic crystal with lamellar structure was synthesized by hydrothermal, reflux, and microwave-assisted methods. On exfoliation with organic molecules, layered crystals can be converted to monolayers, and nematic liquid crystal phase was formed at sufficient concentration of monolayers.
12:04
Exfoliation of Egyptian Blue and Han Blue, Two Alkali Earth Copper Silicate-based Pigments
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Cited by 34 •
2014
The preparation and exfoliation of CaCuSi4O10 and BaCuSi4O10 are described. Upon stirring in hot water, CaCuSi4O10 spontaneously exfoliates into monolayers, whereas BaCuSi4O10 requires ultrasonication in organic solvents. Near infrared (NIR) imaging illustrates the NIR emission properties of these materials, and aqueous dispersions of these nanomaterials are useful for solution processing.
10:41
Preparation of Liquid-exfoliated Transition Metal Dichalcogenide Nanosheets with Controlled Size and Thickness: A State of the Art Protocol
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Cited by 44 •
2016
A protocol for the liquid exfoliation of layered materials to nanosheets, their size selection and size measurement by microscopic and spectroscopic techniques is presented.
06:19
High-Throughput Screening to Obtain Crystal Hits for Protein Crystallography
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Cited by 14 •
2023
This protocol details high-throughput crystallization screening, ranging from the 1,536 microassay plate preparation to the end of a 6 week experimental time window. Details are included about the sample setup, the imaging obtained, and how users can perform analyses using an artificial intelligence-enabled graphical user interface to quickly and efficiently identify macromolecular crystallization conditions.
07:39
Protein Crystallization
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2023
Protein crystallization, obtaining a solid lattice of biomolecules, elucidates protein structure and enables the study of protein function. Crystallization involves drying purified protein under a combination of many factors, including pH, temperature, ionic strength, and protein concentration. Once crystals are obtained, the protein structure can be elucidated by x-ray diffraction and computation of an electron density model. This video introduces protein crystallization and shows a general...
FAQs
Separation occurs when the applied cleavage force exceeds the relatively weak interactions holding adjacent layers together. This contrast between strong bonding within a layer and weaker coupling between layers allows the crystal to split without eliminating the individual sheets. Controlling the applied force helps produce flakes ranging from relatively thick pieces to sheets only a few atomic layers thick.
Adhesive tape and transfer stamps provide the mechanical contact needed to cleave and handle thin crystal flakes. After separation, they can help place the flakes onto a selected substrate for further study or fabrication. Their role is therefore not limited to initiating cleavage; they also support controlled transfer of delicate, low-dimensional material onto a usable engineering surface.
Thickness determines whether a sample approaches the few-atomic-layer regime that enables low-dimensional material studies. Researchers can then characterize electrical, optical, and mechanical properties in relation to the thin flake structure. This is important because engineering designs such as sensors, flexible electronics, and photonic components depend on the behavior of atomically thin materials rather than only on bulk crystals.
A typical workflow begins with a layered crystal and applies adhesive tape or a transfer stamp to separate layers through cleavage. The resulting flakes are then placed on a substrate, where their electrical, optical, or mechanical properties can be examined. The procedure connects material separation directly with sample preparation for characterization and device-oriented fabrication.
The technique can produce thin flakes from layered materials such as graphene and transition-metal dichalcogenides. These materials serve as examples of crystals whose separated layers can be investigated as low-dimensional structures. Obtaining them in thin-flake form supports measurements of electrical, optical, and mechanical behavior and provides material platforms for engineering research.
Engineering researchers use exfoliated crystals to investigate components that rely on atomically thin materials. Supported applications include sensors, flexible electronics, and photonic components. The flakes provide a basis for studying how electrical, optical, and mechanical properties can contribute to device performance, while placement on a substrate connects material preparation with practical component development.