Acoustically and electrokinetically driven transport in microfluidic devices
Başlık çevirisi mevcut değil.
- Tez No: 400026
- Danışmanlar: DR. BAKHTIER FAROUK
- Tez Türü: Doktora
- Konular: Makine Mühendisliği, Mechanical Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2012
- Dil: İngilizce
- Üniversite: Drexel Unıversıty
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
Özet yok.
Özet (Çeviri)
Electrokinetically driven flows are widely employed as a primary method forliquid pumping in micro-electromechanical systems. Mixing of analytes and reagents islimited in microfluidic devices due to the low Reynolds number of the flows. Acousticexcitations have recently been suggested to promote mixing in the microscale flowsystems.Electrokinetic flows through straight microchannels were investigated using thePoisson-Boltzmann and Nernst-Planck models. The acoustic wave/fluid flow interactionsin a microchannel were investigated via the development of two and three-dimensionaldynamic predictive models for flows with field couplings of the electrical, mechanicaland fluid flow quantities. The effectiveness and applicability of electrokineticaugmentation in flexural plate wave micropumps for enhanced capabilities wereexplored. The proposed concept can be exploited to integrate micropumps into complexmicrofluidic chips improving the portability of micro-total-analysis systems along withthe capabilities of actively controlling acoustics and electrokinetics for micro-mixerapplications.Acoustically excited flows in microchannels consisting of flexural plate wavedevices and thin film resonators were considered. Compressible flow fields wereconsidered to accommodate the acoustic excitations produced by a vibrating wall. Thevelocity and pressure profiles for different parameters including frequency, channelheight, wave amplitude and length were investigated. Coupled electrokinetics andacoustics cases were investigated while the electric field intensity of the electrokineticbody forces and actuation frequency of acoustic excitations were varied. Multifieldanalysis of a piezoelectrically actuated valveless micropump was also presented. Theeffect of voltage and frequency on membrane deflection and flow rate were investigated.Detailed fluid/solid deformation coupled simulations of piezoelectric valvelessmicropump have been conducted to predict the generated time averaged flow rates.Developed coupled solid and fluid mechanics models can be utilized to integrate flowthroughsensors with microfluidic chips.
Benzer Tezler
- Gemi yapılarının vibro-akustik yaklaşımı ile titreşim ve akustik açısından optimum hale getirilmesi
Acquiring vibrationally and acoustically optimum ship structure through the vibroacoustic methodology
MEHMET AVCU
Doktora
Türkçe
2018
Makine Mühendisliğiİstanbul Teknik ÜniversitesiMakine Mühendisliği Ana Bilim Dalı
PROF. DR. İSMAİL AHMET GÜNEY
- Akdeniz ve Ege bölgesi Anadolu medeniyetlerinde yer alan arkeolojik tiyatro yapılarının akustik açıdan incelenmesi
The acoustically observation of ancient theaters in Meditteranean and Aegean regions
ZİYA ÖZER
Yüksek Lisans
Türkçe
2017
Sanat TarihiKırıkkale ÜniversitesiMüzik Ana Bilim Dalı
PROF. DR. HASAN ARAPGİRLİOĞLU
- Antik Çağ'dan günümüze performans mekanlarının akustik ve mimari açıdan gelişimi
The development of performance halls acoustically and architecturely from Antiquity to present
DAMLA KÖMÜRCÜ
Yüksek Lisans
Türkçe
2017
Mimarlıkİstanbul Teknik ÜniversitesiMimarlık Ana Bilim Dalı
YRD. DOÇ. DR. NURGÜN BAYAZIT
- 3-6 yaş grubu çocuklarda akustik iyileştirme yapılmış nebülizatör cihazı ile verilen inhaler tedavinin korku ve psikososyal semptomlar üzerine etkisi: Randomize kontrollü bir çalışma
The effect of inhaler therapy administered with an acoustically improved nebulizer device on fear and psychosocial symptoms in children aged 3–6 years: A randomized controlled study
BETÜL PORT ÖZDEMİR
Yüksek Lisans
Türkçe
2026
HastanelerZonguldak Bülent Ecevit ÜniversitesiÇocuk Sağlığı ve Hastalıkları Hemşireliği Ana Bilim Dalı
PROF. DR. MELTEM KÜRTÜNCÜ
- İlkokul dört ve beşinci sınıfa devam eden işitme, görme ve ortopedik engelli çocukların benlik kavramlarının incelenmesi
A Study on the self-consept of the hearing, visual impairments and physically handicapped children attending fourth and fifth in elemantary school
NAZİKER ŞENER
Yüksek Lisans
Türkçe
1999
Ev EkonomisiAnkara ÜniversitesiEv Ekonomisi Ana Bilim Dalı
DOÇ. DR. NERİMAN ARAL