Nanophotonic chemical reactions : new photochemical reactions and their applications Introduction Non uniform Optical Near field Ultra flat Surface using a Near field Etching Near field Chemical Reactions and Excitations Wavevector Excitation Remarks. This book introduces readers to the cutting edge topic of nanophotonic photochemical reactions and their applications. From among the various innovations in optical technology achieved by means of the non uniform optical near field it focuses on photochemical reactions at the nanoscale. Optical near fields are the elementary surface excitations of nanometric particles with non uniform field distributions. After reviewing the unique properties of the non uniform optical field the book presents a range of applications of near field assisted photochemical reactions including near field etching visible water splitting carbon dioxide reduction and reactions in solar cells.