chapter 1. Powering microsystems with ambient energy / Gabriel Alfonso Rincon-Mora -- chapter 2. Low- power energy harvesting solutions for biomedical devices / Jordi Colomer-Farrarons, Pere Ll. Miribel-Catala, E. Juanola-Feliu, and J. Samitier -- chapter 3. Energy harvesting : thermoelectric and microsystems perspectives and opportunities / Terry J. Hendricks -- chapter 4. Thermopower wave-based micro- and nanoscale energy sources / Sumeet Walia and Kourosh Kalantar-Zadeh -- chapter 5. Polymer solar cell : an energy source for low-power consumption electronics / Badr Omrane, Sasan V. Grayli, Vivien Lo, Clint Landrock, Siamack V. Grayli, Jeydmer Aristizabal, Yindar Chuo, and Bozena Kaminska -- chapter 6. Inverted organic solar cells / Purna P. Maharjan and Qiquan Qiao -- chapter 7. Monocrystalline silicon solar cell optimization and modeling / Joanne Huang and Victor Moroz -- chapter 8. Piezoelectric thin films and their application to vibration energy harvesters / Isaku Kanno -- chapter 9. Piezoelectric vibration energy harvesters : modeling, design, limits, and benchmarking / A. Dompierre, S. Vengallatore, and L. G. Frechette.