Eylem Seç
A Droplet-based Lab-on-Chip Approach for the Fabrication of Polymeric Inertial Confinement Fusion Target Shells
Başlık:
A Droplet-based Lab-on-Chip Approach for the Fabrication of Polymeric Inertial Confinement Fusion Target Shells
Yazar:
Viza, Nelia Del Pilar, author.
ISBN:
9780355974904
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (234 pages)
Genel Not:
Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
Advisors: David R. Harding Committee members: Thomas B. Jones; Douglas H. Kelley; Matthew Z. Yates.
Özet:
Sphericity, wall thickness uniformity and yield are difficult specifications to fulfill as required by inertial confinement fusion experiments for polymer shells prepared by the microencapsulation technique. To improve these stringent requirements, a microfluidic lab-on-chip methodology is proposed as a new way to fabricate polymeric targets and replace the current batch processes. In this dissertation, the first and second steps in making targets, forming a double emulsion and exchanging solvent, have been developed using a microfluidic lab-on-chip approach.
T-junction and focus-flow microfluidic techniques were developed to form single and double emulsions through the aid of surfactants or through the use of different surface energy materials. A T-junction design utilized viscous shear and inertial forces to form both surfactant-based and non-surfactant-based water-in-oil and oil-in-water emulsion, from 1mm to 18mm in length. The fluid flow and dimensionless Ca and ϕ numbers provided control of the droplet size. An acrylic double cross focus-flow device, utilizing shear forces, formed oil-in-water-in-oil double emulsions for the fabrication of resorcinol formaldehyde targets.
A Teflon/Bk7 glass double focus-flow device also formed water-in-oil-in-water double emulsions and fabricated polystyrene shells. The double emulsions yielded shells with an outer diameter ranging from 2.3+/-0.07mm to 4.3+/-0.23mm and a wall thickness ranging from 70mum to 800mum.
Serpentine micromixer techniques were also established to promote the inner fluid transport across a resorcinol formaldehyde shell wall. An efficient 60-80% exchange of isopropyl alcohol inside the shell to the surrounding oil was achieved using a sinusoidal serpentine mixer. These promising experimental results encourage continued research into fully integrating the remaining batch processes onto a lab-on-chip concept.
Notlar:
School code: 0188
Konu Başlığı:
Tüzel Kişi Ek Girişi:
Mevcut:*
Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(680035.1) | 680035-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
On Order
Liste seç
Bunu varsayılan liste yap.
Öğeler başarıyla eklendi
Öğeler eklenirken hata oldu. Lütfen tekrar deneyiniz.
:
Select An Item
Data usage warning: You will receive one text message for each title you selected.
Standard text messaging rates apply.