Needle-based procedures, such as biopsy, thermal ablation, brachytherapy, and drug delivery, provide a minimally invasive means for diagnosis or treatment. The success of the procedure relies on the needle reaching the physician’s desired target (typically identified on a medical image) accurately. However, due to tissue deformation and the accuracy limits of human hand–eye coordination, the ne...

Recent interest in high-speed scanning probe microscopy for high-throughput applications including video-rate atomic force microscopy and probe-based nanofabrication has sparked attention on the development of high-bandwidth flexure-guided nanopositioning systems (nanopositioners). Such nanopositioners are designed to move samples with sub-nanometer resolution with positioning bandwidth in the ...

Once these features are analytically and experimentally verified, they can lead to significant advantages in terms of range of motion, accuracy of motion and simplicity in motion control. Most parallel kinematics flexures have a limited range of motion since larger motions induce non-linearity and parasitic coupling, which in turn limits accuracy. Despite being parallel mechanisms, the proposed...

Thermoplastic braided composite tubular beams were manufactured using commingled hybrid yarn with braid angles 30°, 45° and 60° tested in static three-point flexure. Two principal deformation modes observed during the flexural loading: global flexure localised crush. The extent of each mode occurring three angle variants was measured a linear deflectometer as well 3D digital image correlation. ...

introduction: angle and internal position of lateral pterygoid muscle leads to contraction over two half of the mandible in maximum opening and protrusion position so it can affects impression prosthetic procedures. the aim of this study was to evaluate the mandibular flexure in two transverse and antro-posterior dimensions. methods: seventy edentulous patients at mashhad faculty of dentistry a...

The contents of the small intestine are fluid in character, travel rapidly through the 22 feet of its length, and begin to issue through the ileo-csecal valve within four to five hours of a meal. They travel through the large intestine far more slowly, reaching the hepatic flexure in six and a half hours, the splenic flexure in nine hours, and the pelvic colon in about eighteen hours?in a semi-...

This paper describes the design of a small-scale three degree-of-freedom compliant-mechanismbased manipulator with an approximately 2cm x 2cm x 2cm cubic workspace. The manipulator exhibits a significantly larger range of motion and better spatial structural properties than a conventional compliant mechanism, due primarily to a unique flexure joint developed by the authors. A brief description ...