Related Experiment Video
Updated: Aug 15, 2026
09:33
Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
6.6K
Multifunctional Programmable Transmissive Metasurface with Phase and Amplitude Manipulation Capability
Hao Tian Shi1, Rui Yuan Wu1,2, Shi He1
1State Key Laboratory of Millimeter Waves, Southeast University, Nanjing, China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|December 23, 2025
Summary
This study introduces a novel transmissive programmable metasurface capable of both amplitude and phase control for advanced electromagnetic wave manipulation. This breakthrough offers enhanced capabilities for applications in communications and imaging.
Area of Science:
- Electromagnetic physics
- Information science
- Metamaterials
Background:
- Programmable metasurfaces offer flexible electromagnetic (EM) wave control.
- Current research primarily focuses on reflective metasurfaces with limited phase coding capabilities.
Purpose of the Study:
- To develop a transmissive programmable metasurface with both amplitude and phase coding.
- To overcome the limitations of existing reflective metasurfaces.
Main Methods:
- Design and fabrication of a prototype transmissive programmable metasurface.
- Implementation of multiple-bit phase control and joint phase-amplitude control using varying control voltages.
Main Results:
- The metasurface demonstrated successful vortex beam generation, hologram imaging, and beam forming.
- Experimental results confirmed the device's good performance and powerful EM manipulation capabilities.
Conclusions:
- The proposed transmissive programmable metasurface enables advanced EM wave modulation.
- This technology holds significant potential for applications in imaging, data storage, and wireless communications.
Related Concept Videos
01:30Potentiometer
Voltage and current measurements using a standard voltmeter and ammeter alter the circuit being measured either by drawing or resisting the current flow, which introduces uncertainties in the measurements. Null measurements balance the voltages so that no current flows through the measuring device and, therefore, no alterations occur in the measured circuit.
Suppose the emf of a battery needs to be measured. If the battery is directly connected to a standard voltmeter, the measured quantity is...
Suppose the emf of a battery needs to be measured. If the battery is directly connected to a standard voltmeter, the measured quantity is...
01:19Transfer function and Bode Plots-I
A transfer function presented in its standard form integrates elements' constant gain, the zeros, and poles at the origin, simple zeros and poles, and quadratic poles and zeros. The transfer function can be written as H(ω):
01:23Transfer function and Bode Plots-II
In the standard form, the transfer function is shown in constant gain, poles/zeros at origin, simple poles/zeros, and quadratic poles/zeros; each contributing uniquely to the system's overall response. The term represents the magnitude of the simple zero:
01:22Multi-input and Multi-variable systems
Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence of...
In the absence of...
01:24Bus Impedance Matrix
Calculating subtransient fault currents for three-phase faults in an N-bus power system involves using the positive-sequence network. When a three-phase short circuit occurs at a specific bus, the analysis uses the superposition method to evaluate two separate circuits.
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
01:20Transformations of Functions III
Transformations modify the graphical representation of a function without changing its fundamental form. One common transformation is reflection, which flips the graph across a designated axis. When the vertical coordinates of all points are multiplied by the negative one, the entire graph is mirrored over the horizontal axis. This transformation reverses the vertical orientation of peaks and troughs, akin to signal inversion in electrical systems, where a waveform is flipped, but the timing of...