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Smart materials, also called intelligent or responsive materials, [1] [page needed] are designed materials that have one or more properties that can be significantly changed in a controlled fashion by external stimuli, such as stress, moisture, electric or magnetic fields, light, temperature, pH, or chemical compounds.
Smart polymers, stimuli-responsive polymers or functional polymers are high-performance polymers that change according to the environment they are in. . Such materials can be sensitive to a number of factors, such as temperature, humidity, pH, chemical compounds, the wavelength or intensity of light or an electrical or magnetic field and can respond in various ways, such as altering color or ...
Temperature-responsive polymers or thermoresponsive polymers are polymers that exhibit drastic and discontinuous changes in their physical properties with temperature. [1] The term is commonly used when the property concerned is solubility in a given solvent , but it may also be used when other properties are affected.
Integrating functional materials and mechanical design is an emerging research area to explore responsive mechanical metamaterials. [50] Recent studies explore new classes of mechanical metamaterials that can response to different excitation types such acoustic, [62] thermophotovoltaic [63] and magnetic. [64]
The two most prevalent shape-memory alloys are copper-aluminium-nickel and nickel-titanium (), but SMAs can also be created by alloying zinc, copper, gold and iron.Although iron-based and copper-based SMAs, such as Fe-Mn-Si, Cu-Zn-Al and Cu-Al-Ni, are commercially available and cheaper than NiTi, NiTi-based SMAs are preferable for most applications due to their stability and practicability [1 ...
Try layering other items with it, like a sweater and tee (pictured above), to break up the material, too. 5. Track Pants. Jeremy Moeller/GETTY IMAGES.
Materials may swell, collapse, or change depending on the pH of their environment. This behavior is exhibited due to the presence of certain functional groups in the polymer chain. pH-sensitive materials can be either acidic or basic, responding to either basic or acidic pH values. These polymers can be designed with many different ...
Positioned on Broadway, in Manhattan, New York City, is the Charging Bull Statue, also called the Bull of Wall Street. The 7,100-pound bronze sculpture is 11 feet high and 16 feet long.