Application Cases

Second-Order Elastic Topological Insulators (SETIs) represent a relatively new concept in materials science and condensed matter physics, combining the properties of topological insulators with elasticity theory.

Second-order topological insulators are a special class of topological materials distinct from conventional (first-order) topological insulators.

Their gapless boundary states emerge at (d-2)-dimensional boundaries.

This implies that in a two-dimensional second-order topological insulator, gapless edge states manifest at one-dimensional boundaries (e.g., edges or corners).

These materials possess unique electronic structures and topological properties, granting them potential application value in fields such as quantum computing, quantum communication, and spintronics.

Despite their promising prospects, second-order elastic topological insulators still face challenges.

These include: effectively fabricating and characterizing these materials, deeply understanding the intrinsic relationship between their topological properties and elastic behavior, and achieving precise control over these properties.

To overcome these challenges, scientists need to continue in-depth research into the physical mechanisms of these materials and explore new fabrication and control methods.

Aigtek Electronics' power amplifiers find extensive application in driving piezoelectric ceramics.

Depending on the parameters of different piezoelectric ceramics, suitable instruments are available that can drive most commercially available piezoelectric ceramics.

Experiment Name:.

Research on Elastic Wave Technology in Elastic Topological Insulators Based on Topologically Protected States.

Experiment Principle:.

Piezoelectric ceramics exhibit the piezoelectric effect – they deform under an applied electric field.

Thus, piezoelectric ceramics can serve as driving elements to control the state of second-order topological insulators by modulating the applied electric field.

Piezoelectric ceramics can be precisely controlled using a power amplifier combined with a Function Waveform Generator (FWG).

Experiment Block Diagram: 

Experiment Procedure:

Sample Fabrication: Specimens were fabricated by perforating an aluminum plate (dimensions: 36 mm length × 36 mm width × 2 mm thickness) using laser cutting technology (precision: 0.2 μm).Excitation Source: Excitation was generated by a piezoelectric disk connected to an aluminum patch fixed on the sample surface, used to excite out-of-plane and in-plane modes.Signal Generation & Amplification: The piezoelectric disk was driven by a modulated signal (0.01 - 1 MHz) from a computer and amplified by a power amplifier (Aigtek, ATA-2021H).Vibration Measurement: The vibrational response of the sample was captured using a scanning laser Doppler vibrometer.

Key Application Areas:

Quantum Computing & Quantum Communication.

Spintronics.

Thermoelectric Conversion & Energy Harvesting.

Optics & Optoelectronics.

Sensors & Biomedical Applications.

Application Scenarios:.

Thermoelectric Conversion & Energy Harvesting.

Qubit Protection.

Quantum Entanglement & Transmission.

Spin Logic Devices.

High-Efficiency Thermoelectric Materials.

Photodetectors & Modulators.

Biosensors.

Drug Delivery Systems.

Microelectromechanical Systems (MEMS).

Recommended Products:

Figure: ATA-2000 Series High-Voltage Amplifier Specifications

Figure: ATA-4000 Series High-Voltage Power Amplifier Specifications 

Xi'an Aigtek Electronics Co., Ltd.Is a high-tech enterprise specializing in the R&D, production, and sales of electronic test and measurement instruments, including Power Amplifiers, High-Voltage Amplifiers, Power Signal Sources, Pre-amplifiers for Small Signals, High-Precision Voltage Sources, and High-Precision Current Sources.Aigtek provides customers with competitive testing solutions.