Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 989 for “"micron"”.
-
Micron-bubble streaming flow towards micron to sub-micron sized sorting
… sized particle sorting down to 1μm and sub-micron. On top of that, we want to further explore the potential of applying bubble streaming sorting to biological objects which in the similar size scales. Systematical experiments have been conducted on polystyrene latex particles as well as …
-
Tailoring Fluorene-based Oligomers for micron and sub-micron sized Photopatterning
… transition temperature, which leads to the best micron sized photopatterns. The second generation of pure fluorene oligomers demonstrate how different contents of polymerizable groups affect the photopolymerization behaviour. Here the molecular weights were kept constant around 5000 g/mol by …
-
Dynamics of Cellular Rigidity Sensing on the Micron and Sub-micron Scale
… system for this study is based on fabrication of micron and submicron pillar substrates and their surface functionalization and finally measurement of forces that cells exert to these substrates. In chapter 2, the interplay between the rigidity of the substrate and the cell's force response was …
-
Towards personal fabrications : tabletop tools for micron and sub-micron scale functional rapid prototyping
Three tools for the rapid prototyping of micron and sub-micron scale devices are presented. These tools represent methods for the manufacture of PEMS, or Printed micro Electro Mechanical Systems, and are enabled because they exploit the novel properties of nanocrystalline materials and their …
-
Generation and Characterization of Micron and Sub-micron Sized Particulate using Electrothermal Plasma Source SIRENS
The Surface Interaction Research Experiment at North Carolina State (SIRENS) is an electrothermal plasma facility which was recently used to generate particulate for the enhancement and modification of surfaces. The modification of fabrics by surface coating or particle implantation was a specific …
-
Non-invasive characterization of bone tissue and modeling of bone at micron and sub-micron levels
… bone at two structural length scales, namely a micron level and a sub-micron level, and perform a feasibility study of using ultrasound to detect bone growth in a limb regeneration project. At the sub-micron level, bone consists of a single lamella which is formed by a collagen fiber network …
-
Gaseous flow in micron-sized channels
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1994.
-
1.2-micron multi-section quantum dot superluminescent diodes
Superluminescent diodes (SLD) with a center wavelength of 1.2μm are of interest for use in medical imaging of skin tissue especially in the field of optical coherence tomography (OCT). In this thesis a ridge-waveguide multi-section quantum dot SLD that emits at 1.2μm with a bandwidth greater than …
-
OPISA optoelectronics packaging interfaces for sub-micron alignment
For optoelectronic devices submicron precision is required to optimally couple the laser source with the optical fibre. Laser welding is used because of its inherent attributes of accuracy, strength, cleanliness and minimised heat affected zone and structural changes. Due to the rapid …
-
Micron-scale liquid engineering for porous polymer patterning
… the same bottom-up self-assembly processes at micron-scale by ordering drops and encapsulating materials in drops to load functional materials into the porous structure directly. This research aims firstly at controlling and simplifying the system to understand the force balances and …
-
Cell-based array for deep sub-micron technologies
In this thesis I explore transistor topologies for high density cell-based arrays that allows for dense computation blocks, small memory cells, and strong signal drivers. This involves simulating different circuit types with HSPICE to determine ideal transistor sizes. Using Magic and the results of …
-
Fabrication and assembly of micron-scale ceramic components
The micron-scale manufacturing industry has grown to hundreds of billions of dollars since the advent of the transistor in 1947. Increasing demands for integration of surface mount components, greater use of portable electronic devices, and miniaturized medical diagnostic devices have given rise to …
-
Sub-micron Patterning of ZnO-PMMA Hybrid Films
Sub-micron patterning is fundamental to the fabrication of numerous devices Traditional commercial manufacturing methods either lack the resolution needed to attain the appropriate size or are prohibitively expensive due to low throughput or the necessity of expensive equipment. Imprint lithography …
-
Dynamics and Statics of Liquid-Liquid and Gas-Liquid interfaces on Non-Uniform Substrates at the Micron and Sub-Micron Scales
… subject to constraints. However, even for sub-micron bubbles and droplets free of hydrodynamic and hydrostatic stresses (small Capillary, Weber, and Bond numbers), non-equilibrium at the contact line of sessile bubbles and droplets can influence geometries and dynamics. First, the wetting of …
-
Gas Jet Process for Production of Sub-micron Fibers
A new, simple, and effective method was developed for production of fibers from polymer solutions with diameters ranging from a few tens of nanometers to a few micrometers. The process, termed gas jet nanofibers (GJF), bears several similarities and contrasts with electrospinning and melt-blowing …
-
Two micron Tm doped ZBLAN double clad fibre laser.
Tm:ZBLAN fibre lasers have potential applications in many research areas, such as eye safe range detection, medical science and materials processing. In this thesis we investigate improving the laser performance of a thulium doped fluoride fibre (specifically ZBLAN) to generate laser output with …
-
A Sub-0.1-Micron PtSi Schottky Source/drain MOSFET
The devices are fabricated with lightly doped silicon substrates, 19-A to 34-A gate oxide, $\sim$0.05-$\mu$um gate lithography, 100-A sidewall oxides, self-aligned PtSi, and no intentional doping. The thin gate and sidewall oxides enable high field emission currents at low voltages. These devices …
-
Advances in biophysical characterisation through micron scale flow engineering
… I achieved this objective by fabricating micron scale structures, where, in contrast to macroscale systems, chaotic mixing of fluids and the molecules therein was suppressed. In this manner, I was able to dispense with the support structures that prevent mixing in conventional protein …
-
Sub-micron gate lithography in an MMIC production environment
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1990, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1990.
-
Micron-scale thermistors for rapid transients in interfacial temperature
The shape of freezing droplets is controlled by the motion of the molten interface, or contact line, between the liquid droplet and the solid target. The solution for the heat transfer between the liquid and solid has an analytical singularity at the contact line. We therefore wish to closely …
Page 1 of 50