Toplam kayıt 20, listelenen: 1-20

    • An acoustic blood pressure sensing scheme using time of flight and shear wave elastography techniques 

      Beyaz, Mustafa İlker (Sensors and Actuators A-Physical, 2021)
      A novel wearable blood pressure sensor scheme is presented. The design incorporates an array of piezoelectric transducers to transmit acoustic waves through the skin, and receive reflected echoes from an arterial wall. The ...
    • An adhesion-dominated rolling Friction regime unique to micro-scale ball bearings 

      Hanrahan, Brendan M.; Misra, Saswat; Beyaz, Mustafa İlker; Feldman, Jeremy H.; Waits, Christopher M.; Ghodssi, Reza (Tribology Letters, 2014)
      We demonstrate that micro-scale rolling bearings exhibit friction and wear properties markedly different from their macro-scale counterparts. A microfabricated testing platform uses variable rolling element diameters or ...
    • A belt-integrated piezoelectric energy harvester for wearable electronic devices 

      Beyaz, Mustafa İlker; Ahmed, Naveed (Ferroelectrics, 2021)
      This paper reports a novel piezoelectric energy harvester incorporated on a waistbelt for power generation from waist movements. The device is composed of multiple piezoelectric disks in 3 D-printed encapsulations and ...
    • Design and experimental validation of a stress- controlled pressure sensor for wearable pulse monitoring 

      Beyaz, Mustafa İlker; Çeliktaş Oğuzcan, Havva (2021 IEEE International Symposium on Applications of Ferroelectrics (ISAF), 2021)
      This paper presents a pulse sensor design scheme with adjustable preset pressure. The design consist of two PVDF layers sandwiching a PZT layer. While PZT is used to detect the pulse vibrations, PVDF layers are employed ...
    • The development and performance characterization of turbine prototypes for a MEMS spirometer 

      Göreke, Utku; Habibiabad, Sahar; Azgın, Kıvanç; Serinağaoğlu Doğrusöz, Yeşim; Beyaz, Mustafa İlker (IEEE Sensors Journal, 2016)
      The design, optimization, and performance characterization of turbine prototypes for the development of a Microelectromechanical Systems spirometer is reported. Four different turbines were designed based on large-scale ...
    • Energy harvesting from knee motion using piezoelectric patch transducers 

      Beyaz, Mustafa İlker (Academic Platform Journal of Engineering and Science, 2019)
      This paper presents a piezoelectric energy harvesting device that generates electrical power from knee motion during human gait. The device is composed of two MEMS-based piezoelectric patch transducers optimized for placement ...
    • Fluorescence quenching-based bodipy-boronic acid linked viologen dual system for potential glucose sensing applications 

      Demirel Topel, Seda; Beyaz, Mustafa İlker (Sensor Review, 2022)
      Purpose – The purpose of this study is to develop a non-enzymatic based glucose-sensing platform composed of Bodipy-BBV dual system which can be monitored by a photodetector under the blue LED excitation. Design/method ...
    • Hybrid magnetic-piezoelectric energy harvester for power generation around waistline from gait 

      Beyaz, Mustafa İlker; Tat, Fatih; Özkaya, Kamil Yunus; Özbek, Ramazan (Journal of Electrical Engineering & Technology, 2019)
      The development of a novel hybrid energy harvester for scavenging power around human waistline is presented. The harvester is composed of mm-scale electromagnetic coils and piezoelectric transducers incorporated on a belt, ...
    • An implantable sensor for arterial pressure monitoring with minimal loading: design and finite element validation 

      Beyaz, Mustafa İlker (IEEE Sensors Conference, 2022)
      This paper presents an in-vivo flexible pressure sensor that can be implanted around an artery for continuous measurement of blood pressure. Currently, in-vivo arterial sensor architectures rely on circular geometries fully ...
    • An improved artery pressure sensor design that minimally disturbs blood pressure and flow 

      Aslan, Menduh Furkan; Beyaz, Mustafa İlker (2023 14th International Conference on Electrical and Electronics Engineering (ELECO), 2023)
      This paper reports the design of an in-vivo pressure sensor that can be implanted around the artery to measure blood pressure. As traditional arterial pressure sensors are completely wrapped around the artery, they reduce ...
    • An integrated permanent magnet Micro-turbo- generator supported on microball bearings 

      Beyaz, Mustafa İlker; Hanrahan, Brendan M.; Feldman, Jeremy H.; Ghodssi, Reza (Journal of Microelectromechanical Systems, 2013)
      This paper presents the design, fabrication, and testing of an integrated microturbogenerator utilizing permanent magnets and microball bearings. The key components of this generator are the following: 1) a silicon ...
    • Investigation of diamagnetic levitation for dynamic MEMS devices 

      Beyaz, Mustafa İlker (4th International Mediterranean Science and Engineering Congress (IMSEC 2019), 2019)
      The mechanical performance and lifetime of dynamic MEMS (micro electro mechanical systems) devices such as micropumps, micromotors, and micropositioners heavily rely on the bearing mechanism that enables motion per applied ...
    • An investigation on the electromagnetic design optimization of rotary micromachines with double-layer permanent magnets 

      Özkaya, Kamil Yunus; Beyaz, Mustafa İlker (Sensors and Actuators A: Physical, 2015)
      Electromagnetic design optimization of axial-flux rotary micromachines utilizing double-layer permanent magnets is presented and applied to a micro-scale generator/spirometer currently under development. Double-layer magnet ...
    • A magnetic sensor for artery pressure monitoring 

      Aslan, Menduh Furkan; Kerbouche, Omar; Navruz, Tuğba Selcen; Beyaz, Mustafa İlker (11th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC), 2023)
      —This paper reports a magnetic sensing device for in-vivo artery pressure monitoring. The device consists of multiple magnets and hall sensors arranged orthogonally on a flexible substrate. The novelty of the device lies ...
    • A micro-scale biosensor for the detection of bacillus stearothermophilus spore germination 

      Beyaz, Mustafa İlker; Sekkouti, Aissa (International Conference on Engineering Technologies (ICENTE'19), 2019)
      Germination of Bacillus Stearothermophilus bacterial spores is being used as a marker in sterilization monitoring systems to verify the success of sterilization processes in healthcare facilities. Such systems mainly employ ...
    • Monitoring of actuation conditions in a micro- turbo-generator 

      Beyaz, Mustafa İlker; Hanrahan, Brendan M.; Feldman, Jeremy H.; Ghodssi, Reza (IEEE Sensors Journal, 2013)
      This paper presents the theory and implementation of an integrated sensing technique for the real-time measurement of applied actuation conditions in a micro-turbo-generator. The device is composed of a microturbine rotor ...
    • Non-planar drive-sense coil structure for inductive MEMS microphones 

      Beyaz, Mustafa İlker (International Symposium on Advanced Engineering Technologies, 2019)
      MEMS technology offers major advantages for the development of microphones including a small footprint, low power consumption, high sound sensitivity and bandwidth. Capacitive, piezoelectric, and inductive microphones have ...
    • A non-resonant kinetic energy harvester for bioimplantable applications 

      Beyaz, Mustafa İlker; Baelhadj, Hacene; Habibiabad, Sahar; Adhikari, Shyam; Davoodi, Hossein; Badilita, Vlad (Micromachines, 2018)
      A linear non-resonant kinetic energy harvester for implantable devices is presented. The design contains a metal platform with permanent magnets, two stators with three-dimensional helical coils for increased power generation, ...
    • A sub-cm3 energy harvester for in-vivo biosensors 

      Baelhadj, Hacene; Adhikari, Shyam; Davoodi, Hossein; Badilita, Vlad; Beyaz, Mustafa İlker (Microelectronic Engineering, 2020)
      The development of a kinetic energy harvester for in-vivo applications is reported. Consisting of an untethered magnetic platform encased by two stators, the device converts normal body movements into electrical power. A ...
    • A turbine-based MEMS sensor for spirometry with wearable devices 

      Beyaz, Mustafa İlker; Habibiabad, Sahar; Yıldız, Hamza; Göreke, Utku; Azgın, Kıvanç (IEEE Sensors Journal, 2019)
      This paper presents a turbine-based microelectromechanical systems (MEMS) sensor for spirometry application. The compact sensor dimensions allow integration into smart wearable devices for mobile spirometry without a ...