“…The mostly used ferroelectrics replacements are e.g. the Barium Titanate (BTO), Sodium Potassium Niobate (KNN) or Bismuth Sodium Titanate (BNT) [3][4][5][6][7].…”
This paper addresses an important issue of the individual layer thickness influence in a multilayer piezo composite on electro-mechanical energy conversion. The use of energy harvesting systems seems to be very promising for applications such as ultra-low power electronics, sensors and wireless communication. The energy converters are often disabled due to a failure of the piezo layer caused by an excessive deformation/stresses occurring upon the operation. It is thus desirable to increase both reliability and efficiency of the electromechanical conversion as compared to standard concepts. The proposed model of the piezoelectric vibration energy harvester is based on a multilayer beam design with active piezo and protective ceramic layers. This paper presents results of a comparative study of an analytical and numerical approach used for the electro-mechanical simulations of the multilayer energy harvesting systems. Development of the functional analytical model is crucial for the further optimization of new (smart material based) energy harvesting systems, since it provides much faster response than the numerical model.
“…The mostly used ferroelectrics replacements are e.g. the Barium Titanate (BTO), Sodium Potassium Niobate (KNN) or Bismuth Sodium Titanate (BNT) [3][4][5][6][7].…”
This paper addresses an important issue of the individual layer thickness influence in a multilayer piezo composite on electro-mechanical energy conversion. The use of energy harvesting systems seems to be very promising for applications such as ultra-low power electronics, sensors and wireless communication. The energy converters are often disabled due to a failure of the piezo layer caused by an excessive deformation/stresses occurring upon the operation. It is thus desirable to increase both reliability and efficiency of the electromechanical conversion as compared to standard concepts. The proposed model of the piezoelectric vibration energy harvester is based on a multilayer beam design with active piezo and protective ceramic layers. This paper presents results of a comparative study of an analytical and numerical approach used for the electro-mechanical simulations of the multilayer energy harvesting systems. Development of the functional analytical model is crucial for the further optimization of new (smart material based) energy harvesting systems, since it provides much faster response than the numerical model.
“…Piezoelectric materials can be used to fabricate NPs and are also able to generate an electrical charge upon mechanical pressure, and can thus be used to influence biology through modulation with external sources via electro-mechanical transduction. 12,13 Piezoelectricity is the phenomenon by which mechanical energy is converted to electrical energy and vice versa . For example, piezoelectric NPs when exposed to ultrasound, can generate low-intensity electric current, which can stimulate nerve cells and other cell types.…”
Advances in nanotechnology are impacting biomedicine with the potential to improve disease diagnosis, enhance targeted drug delivery, refine imaging of therapeutic responses, control cell and tissue responses, and guide resection....
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