**Chapter 10 167**

Catalytic Micro/Nanomotors: Propulsion Mechanisms, Fabrication, Control, and Applications *by Liangxing Hu, Nan Wang and Kai Tao*

Preface

The book describes modern trends in nanoscience and nanotechnology for creation of smart hybrid nanosystems combining inorganic nano-objects with organic, biological, and biocompatible materials, which create multifunctional and remotely controlled platforms for diverse technical and biomedical uses. The published material includes several review and original research articles devoted to the problems of directed chemical and biological synthesis of such nanosystems, thorough analysis of their physical and chemical properties and prospects of their possible applications.

The combination of magnetic nanoparticles and biocompatible materials leads to the manufacturing of a multifunctional and remotely-controlled platform useful for diverse biomedical applications. The first chapter, "Biomedical Applications of Biomaterials Functionalized with Magnetic Nanoparticles" by Matteo B. Lodi and Alessandro Fanti, describes the possibilities of the formation of such hybrid nanosystems and the variety of their biomedical use. It covers the questions of mathematical modeling of the drug delivery processes and assesses the problem of establishing the influence of the system on tissue regeneration. On the other hand, if a time-varying magnetic field is applied, the magnetic nanoparticles would dissipate heat, which can be exploited to perform local hyperthermia treatment on residual cancer cells in bone tissue. To perform the treatment planning, it is necessary to account for the modeling of the intrinsic non-linear nature of the heat dissipation dynamics in magnetic prosthetic implants. In this work, numerical experiments to investigate the physio-pathological features of the biological system, linked to the properties of the nanocomposite magnetic material, to assess its effectiveness as therapeutic agent are presented.

Magnetic nanoparticles (MNPs) display physical and chemical properties different from those found in their corresponding bulk materials. These properties make them attractive in various applications such as energy, electronics, sensor designs of all kinds, catalysts, magnetic refrigeration, optics, and in various biomedical applications. These multifunctional nanomaterials can be used as contrast agents for medical imaging, nano-vectors to transport therapeutic agents to their target, local delivery of drugs or used to destroy the cancer cells by local hyperthermia. These magnetic platforms should possess small size combined with high magnetic susceptibility and loss of magnetization after removal of the magnetic field. Chapter 2, "Synthesis and ESR Study of Transition from Ferromagnetism to Superparamagnetism in La0.8Sr0.2MnO3 Nanomanganite" by Mondher Yahya, Faouzi Hosni, and Ahmed Hichem Hamzaoui, describes the questions of the optimization of the nanoparticle's size, size distribution, agglomeration, surface coatings and shapes along with the changes in magnetic properties prompted by the application

Nowadays, plasmonic nanostructures attract an increasing attention as signal amplifiers and transducers for optical sensing. The local plasmon-induced enhancement of electric fields affects various optical processes in molecular systems and therefore finds various applications in enhanced spectroscopic techniques, such as Surface-Enhanced Raman Scattering (SERS), Plasmon-Enhanced Fluorescence (PEF), Surface-Enhanced Infrared Absorption (SEIRA), etc. Chapter 3, "Chiral

of magnetic nanoparticles in diverse fields.
