Piezoelectric heterosystems and methods of manipulating the properties thereof

A piezoelectric material system, comprising:

• (a) a heterostructure, including:
• (i) a first material, and
• (ii) a second material positioned over the first material, wherein the first and second materials form a heterojunction defining a collective material property of the heterostructure;
• and
• (b) a material adjustment mechanism configured to maintain the heterojunction at a user-specified material interaction, wherein the material adjustment mechanism is selectively operable to adjust the user-specified material interaction to thereby adjust the collective material property;
• wherein the collective material property includes at least one of piezoelectricity, polarization, charge conductance, heat conductance, ON current, OFF current, or subthreshold slope.

A piezoelectric material system, comprising:

• (a) a heterostructure, including:
• (i) a first material, and
• (ii) a second material positioned over the first material, wherein the first and second materials form a heterojunction defining a collective material property of the heterostructure;
• and
• (b) a material adjustment mechanism configured to maintain the heterojunction at a user-specified material interaction, wherein the material adjustment mechanism is selectively operable to adjust the user-specified material interaction to thereby adjust the collective material property;
• wherein the first material includes a 3D material, a 2D material, a transition metal dichalcogenide, an oxide, a metal, a group IV element, a group III-V element, a group II-VI element, or an alloy, and wherein the second material includes a 3D material, a 2D material, a transition metal dichalcogenide, an oxide, a metal, a group IV element, a group III-V element, a group II-VI element, or an alloy.