This paper presents a novel approach to design a parametric RF stop band pass filter based on Low Temperature Co-fired Ceramic (LTCC) Technology. The LTCC technology enables to miniaturize and development compact structures using not only the standard xy-planar circuit dimensions but also the zheight dimension. The proposed filters topologies are based on a stripline loaded with one or several ...

Introduction The flip chip technology was introduced by IBM in the early 1960s for their solid logic technology, which became the logical foundation of the IBM System/360 computer line [1]. Figure 1(a) shows the first IBM flip chip with three terminal transistors, which are Ni/Au plated Cu balls embedded in a Sn–Pb solder bump on the three I/O pads of transistor. A Cr–Cu– Au adhesion/seed layer...

Microwave sintering is a new sintering technology developed in the middle to late period of the 1980’s, which is characterized by fast densification for ceramic materials[1]. In recent years, microwave heating has been well employed in the field of sintering and joining of ceramics as a result of its advantages against conventional methods. These ceramic materials include oxides, mixed oxides, ...

Laser micro-processing is an enabling technology that facilitates component miniaturization and improved performance characteristics. Alumina ceramic is used in microelectronics in printed circuit fabrication, due to its good dielectric property. Ablation is usually a combination of evaporation and melts expulsion. Material processing with laser is favour because it provides non-contact, low he...

Tel: 504-619-8607 Fax: 504-619-8741 E-mail: [email protected] Prospective clinical studies are evaluating the long-term success of Y-TZP–based all-ceramic FPDs. Y-TZP–based infrastructures for crowns and FPDs present favorable physical, mechanical, and optical properties. Some Y-TZP–based restorative systems use CAD/CAM technology. Nevertheless, technicians should be able to employ traditiona...

Technology has affected all aspects of our lives, but it seems that it does not penetrate to clinical research centers as much as other fields. For example, technology could be used to promote the quality of “Retrospective” studies as much as it become near to the “Prospective” studies. Orthopedics research centers, especially “Hand and upper extremity services” are good places to start. When w...

An experimental study of the rotary ultrasonic drilling of ceramics is first presented. The influence of different process parameters on the material removal rate for machining of magnesia stabilized zirconia is examined. Then a mechanistic approach to modeling the material removal rate during rotary ultrasonic drilling of ceramics is proposed and applied to predicting the material removal rate...

BACKGROUND Squeaking after ceramic-on-ceramic total hip arthroplasty is a relatively uncommon phenomenon. It usually does not require treatment in the absence of pain, mechanical symptoms, and/or relentless squeaking. The purpose of this investigation was to report on four patients who presented with hip pain and squeaking due to fractured ceramic liners after ceramic-on-ceramic total hip arthr...