With the rapid development of industrialization and agriculture, a series of critical imminent
environmental problems and water pollution have caught wide attention from the public and …

Mechanical metamaterials and phononic crystals enable localizing, focusing, and guiding of
elastic or acoustic waves in various ways. Here, we describe the physical mechanisms …

The Photodetector (PD) refers to an energy harvesting device that can directly convert light
energy into electric current. Such a device has been widely used in different applications …

As one important subclass of piezoelectric materials, pyroelectric materials have caused
increasing attention owing to the unique pyroelectric effect induced by spontaneous …

Interfaces in heterostructures have been a key point of interest in condensed-matter physics
for decades owing to a plethora of distinctive phenomena—such as rectification, the …

In the coming era of the internet of things (IoT), wireless sensor networks that monitor, detect,
and gather data will play a crucial role in advancements in public safety, human healthcare …

Energy harvesting exploits ambient sources of energy such as mechanical loads, vibrations,
human motion, waste heat, light or chemical sources and converts them into useful electrical …

Pyroelectricity describes the generation of electricity by temporal temperature change in
polar materials,–. When free-standing pyroelectric materials approach the 2D crystalline …

In recent years, wearable sensors and energy harvesters have shown great potential for a
wide range of applications in personalized healthcare, robotics, and human–machine …

This review covers energy harvesting technologies associated with pyroelectric materials
and systems. Such materials have the potential to generate electrical power from thermal …