Mustafa Yavuz

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This study introduces a new hybrid design for a specific case of assembly lines, and proposes a multi-pass random assignment algorithm to find the minimum number of stations required. The algorithm also finds the sequence and the schedule of the tasks assigned. The new design is a combination of two-sided lines and U-shaped lines, which benefits from the(More)
This paper demonstrates and compares different experimental techniques utilized to estimate the quality factor (Q) and natural frequency from non-contact measurements of Microelectromechanical Systems (MEMS) motions. The relative merits of those techniques are contrasted in Q factor estimation for a cantilever beam MEMS actuator, operated in three(More)
Design, simulation, fabrication and characterization of polymeric photo-thermal microgrippers are presented. The microgrippers were fabricated using a single layer of SU-8. Thermal actuation was achieved in a non-contact manner by focusing laser beam on the grippers from a remote source. Finite element simulations of the microgrippers are presented to(More)
We studied the exposure behavior of low molecular weight polystyrene as a negative tone electron beam lithography (EBL) resist, with the goal of finding the ultimate achievable resolution. It demonstrated fairly well-defined patterning of a 20-nm period line array and a 15-nm period dot array, which are the densest patterns ever achieved using organic EBL(More)
In this paper, a magnetic levitation system for large air-gap microlevitation is presented. The levitation of silicon samples coated with Co-Ni-Mn-P magnetic film is demonstrated. The magnetic layer was electrodeposited at room temperature with a MEMS compatible process. The magnetic properties of the Co-based films are determined and the required magnetic(More)
Integrating plasmonic materials, like gold with a two-dimensional material (e.g., graphene) enhances the light-material interaction and, hence, plasmonic properties of the metallic nanostructure. A localized surface plasmon resonance sensor is an effective platform for biomarker detection. They offer a better bulk surface (local) sensitivity than a regular(More)
Mirizzi syndrome is the compressive blockage of the cystic or choledochal duct caused by a biliary stone occupying the cystic canal or Hartmann's pouch. This occurrence is rare and, in English literature, three cases defined in children have been observed. In order to draw attention to this rare occurrence, we preferred a 14-year-old male patient with(More)
Nanofabrication technology plays an important role in the performance of surface plasmonic devices such as extraordinary optical transmission (EOT) sensor. In this work, a double liftoff process was developed to fabricate a series of nanohole arrays of a hole diameter between 150 and 235 nm and a period of 500 nm in a 100-nm-thick gold film on a silica(More)
This paper reports on-going research progress towards the development of an innovative frequency modulation MEMS gyroscope. The microgyroscope design includes a cantilever beam with a proof mass at its free end coupled electrostatically with two fixed electrodes. The beam is designed with silicon nitride and a layer of electrode material (Au). The(More)