ARTIFICIAL MUSCLES

Artificial muscles are materials or devices that mimic the properties of natural muscles enabling movements, flexibility and responsiveness.

There are several types of artificial muscles and they are; electro active polymers (EAPs), pneumatic artificial muscles (PAMs), shape-memory alloys (SMAs), ionic liquid based muscles and piezoelectric muscles.

Electro active polymers (EAPs) are materials that change shape or size when stimulated by an electric field. They can be used to create artificial muscles that mimic the properties of natural muscles.

Pneumatic artificial muscles (PAMs) use compressed air to generate movements. They consist of an inflatable tube surrounded by a braided mesh which contracts or expands when pressurized or depressurized.

Shape memory alloys (SMAs) are metals that can change shape in response to temperature changes. They can be used to create artificial muscles that mimic the properties of natural muscles.

Ionic liquid based artificial muscles uses ionic liquids to generate movements. They consist of a layer of ionic liquid sandwiched between two electrodes.

Piezoelectric artificial muscles use piezoelectric materials to generate movements. They can be used to create artificial muscles that mimic the properties of natural muscles.

The advantages of using artificial muscles are as follows; artificial muscles can be designed to mimic the flexibility and adaptability of natural muscles. Artificial muscles can be light weight and compact making them suitable for various applications. Some artificial muscles can generate high forces relative to their weight.

The disadvantages of artificial muscles are as follows; artificial muscles can be prone to degradation or failure overtime. Some artificial muscles require significant energy to operate. Artificial muscles can be complex to design and control.

The application of artificial muscles is limited to the following; artificial muscles can be used in robotics to create more flexible and adaptable robots. Artificial muscles can be used in prosthetic limbs to improve functionality and natural movement. Artificial muscles can be used in medical devices such as surgical robots and implantable devices. Artificial muscles can be used in aerospace applications such as morphing structures.

The future of artificial muscles is based on the advances and development of the following technologies; advances in new materials and technologies are expected to improve the performance and durability of artificial muscles. Artificial muscles are expected to be increasingly adopted in various industries including robotics, prosthetics and medical devices. Artificial muscles may be integrated with other technologies such as artificial intelligence and sensors to create more advanced systems.

SOURCES:

• Artificial muscles: Application of advanced polymeric Nano composites by Mohsen Shahinpoor.
• Electro-active polymer (EAPs) actuators as artificial muscles: Reality, potential and challenges by Yoseph Bar-Cohen.
• Ionic polymers metal composites for sensors and actuators by Moshen Shahinpoor.
• Soft actuators: Materials, modeling, applications and future perspectives by Kenji Uchiko.
• Biomimetic robotics: Mechanisms and control by Ranjan Vepa.