This paper presents an omni‐directional wall‐ climbing microrobot with magnetic wheels. The integral design with an actuator and adhesive is realized by integrating stators and rotors of an MEMS‐based electromagnetic micromotor with a magnetic wheel. The omni‐directional wall‐climbing mechanism is designed by a set of steering gears and three standard magnet...

This thesis presents the design, analysis, and experimental results of a circuit to be used as a position sensor for microfabricated electric motors. The circuit is designed to measure the capacitance between the rotor blades and sensor electrodes implanted into the substrate beneath the rotor. This capacitance typically varies between five and fifteen femtofarads as the rotor turns. Analytic a...

This paper presents a millimeters scale omni-directional mobile microrobot with special dual-wheel structure. The microrobot was actuated by three electromagnetic micromotors of 2mm diameter. Dynamic analysis of translational and steering movements presented the relationship between the sizes of the dual-wheel structure and the output torque of the micromotor. Genetic algorithm (GA) was employe...

BACKGROUND Various surgical procedures for correcting stable vitiligo exist but these have their own limitations. Autologous, non-cultured, non-trypsinized, melanocyte plus keratinocyte grafting is a new and simple method of vitiligo surgery. OBJECTIVE The study aimed to evaluate efficacy of a new grafting technique in vitiligo patches. METHODS Eighteen vitiligo patches underwent this proce...

In this paper, the hybrid production planning & control method Double Speed Single Production Line (DSSPL) is presented, modeled and its performances evaluated and compared to classical Production Planning and Control methods (PPC). DSSPL combines JIT/kanban and Material Requirement Planning for the production of different classes of products (Aand B-items based on a market or customer oriented...

A novel endoscopic optical coherence tomography probe was designed and constructed with a 1.9-mm microelectromechanical system (MEMS) motor. The new MEMS endoscopic probe design eliminates the need to couple the rotational energy from the proximal to the distal end of the probe. Furthermore, the endoscopic probe's sheath and fiber have the advantages of having a much smaller diameter and being ...

We have created a 2.5-mm outer diameter integrated photo-acoustic and ultrasonic mini-probe which can be inserted into a standard video endoscope's instrument channel. A small-diameter focused ultrasonic transducer made of PMN-PT provides adequate signal sensitivity, and enables miniaturization of the probe. Additionally, this new endoscopic probe utilizes the same scanning mirror and micromoto...

We investigate the physics of an optically driven micromotor of biological origin. When a single, live red blood cell (RBC) is placed in an optical trap, the normal biconcave disc shape of the cell is observed to fold into a rod-like shape. If the trapping laser beam is circularly polarized, the folded RBC rotates. A model based on geometric considerations, using the concept of buckling instabi...