دانلود کتاب اصول، دستگاه ها و کاربردهای امواج صوتی حجیم و سطحی

Acoustic wave devices, especially surface acoustic wave (SAW)devices, have been used for military and telecommunicationapplications for many decades, and they are regarded as possessinggreat potential for further applications in mobile communication,earth and ocean exploration, and medical imaging and detection,among others. Yet, unleashing this potential appears to be challenging. One of the signs for such challenges is that even tothis day most of SAW devices are still made from crystal cutsidentified decades earlier. While it is indeed a challenging task toidentify new crystal cuts for desired features to meet the emergingneeds, personally I would attribute this lack of advancements to adearth of well‐structured and easy‐to‐understand texts laying out asolid foundation for engineers to gain insights into the underlyingwave theories and connecting these insights to device applications.On the one hand, although a large number of texts have beenwritten on this subject, most of them have placed an emphasison applications with only superficial coverage of the underlyingsciences and theories. These texts are of good values to experiencedengineers in the SAW community, but they do not seem to help muchthe newcomers to the field in terms of gaining a good fundamentalunderstanding of the SAW technologies. On the other hand, thereare also texts available on the subject that dive deep into acoustictheories. One thing I noted is that all theoretical developmentsand discussions in these texts are based on tensor notions across the board. In other words, these texts need some physics ormathematical prerequisites in tensor notions and manipulations forreaders to understand and appreciate.