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259 full-text articles. Page 1 of 11.

Spin Curves For Microchem S1800 (1805, 1813, 1818) Series Positive Resist, Mohsen Azadi, Gerald G. Lopez 2016 Singh Center for Nanotechnology

Spin Curves For Microchem S1800 (1805, 1813, 1818) Series Positive Resist, Mohsen Azadi, Gerald G. Lopez

Tool Data

Spin curves for MicroChem's S1805, S1813, and S1818 were generated and mapped using the Filmetrics F50. Statistical measurements were performed (N=85) and are reported here.


Design And Implementation Of An Integrated Biosensor Platform For Lab-On-A-Chip Diabetic Care Systems, Khandaker Abdullah Al Mamun 2016 University of Tennessee - Knoxville

Design And Implementation Of An Integrated Biosensor Platform For Lab-On-A-Chip Diabetic Care Systems, Khandaker Abdullah Al Mamun

Doctoral Dissertations

Recent advances in semiconductor processing and microfabrication techniques allow the implementation of complex microstructures in a single platform or lab on chip. These devices require fewer samples, allow lightweight implementation, and offer high sensitivities. However, the use of these microstructures place stringent performance constraints on sensor readout architecture. In glucose sensing for diabetic patients, portable handheld devices are common, and have demonstrated significant performance improvement over the last decade. Fluctuations in glucose levels with patient physiological conditions are highly unpredictable and glucose monitors often require complex control algorithms along with dynamic physiological data. Recent research has focused on long term ...


High Contrast 50kv E-Beam Lithography For Hsq Atop Diamond Using Espacer For Spin-On Charge Dissipation, Richard R. Grote, Lee C. Bassett, Gerald G. Lopez 2016 University of Pennsylvania

High Contrast 50kv E-Beam Lithography For Hsq Atop Diamond Using Espacer For Spin-On Charge Dissipation, Richard R. Grote, Lee C. Bassett, Gerald G. Lopez

Protocols and Reports

A high contrast HSQ process atop diamond is presented. A water soluable spin-on conductive layer called ESPACER is used as a charge dissipation layer in lieu of a metal thin film.


Suss Microtec Ma6 Gen3 - S1818 Contrast Curve Data, Jonathan Bryan, Steven Wood, GERALD G. LOPEZ 2016 University of Pennsylvania

Suss Microtec Ma6 Gen3 - S1818 Contrast Curve Data, Jonathan Bryan, Steven Wood, Gerald G. Lopez

Protocols and Reports

No abstract provided.


Suss Microtec Ma6 Gen3 - S1813 Contrast Curve Data, Jonathan Bryan, Steven Wood, Gerald G. Lopez 2016 University of Pennsylvania

Suss Microtec Ma6 Gen3 - S1813 Contrast Curve Data, Jonathan Bryan, Steven Wood, Gerald G. Lopez

Protocols and Reports

No abstract provided.


Heidelberg Dwl66+ S1813 Contrast Curves, Steven Wood, GERALD G. LOPEZ 2016 University of Pennsylvania

Heidelberg Dwl66+ S1813 Contrast Curves, Steven Wood, Gerald G. Lopez

Protocols and Reports

Accurately gauge the optimal machine setting for MicroChem S1813 using the Heidelberg DWL 66+ and plot the contrast curves for the 2mm and 10mm writeheads.


Heidelberg Dwl66+ S1818 Contrast Curves, Steven Wood, GERALD G. LOPEZ 2016 University of Pennsylvania

Heidelberg Dwl66+ S1818 Contrast Curves, Steven Wood, Gerald G. Lopez

Protocols and Reports

Accurately gauge the optimal machine setting for MicroChem S1818 using the Heidelberg DWL 66+ and plot the contrast curves for the 2mm and 10mm writeheads.


Heidelberg Dwl66+ S1805 Contrast Curves, Steven Wood, Gerald G. Lopez 2016 University of Pennsylvania

Heidelberg Dwl66+ S1805 Contrast Curves, Steven Wood, Gerald G. Lopez

Protocols and Reports

Accurately gauge the optimal machine setting for MicroChem S1805 using the Heidelberg DWL 66+ and obtain contrast curves based on the 2mm and 10mm writehead.


Hybrid Straintronics-Spintronics: Energy-Efficient Non-Volatile Devices For Boolean And Non-Boolean Computation, Ayan K. Biswas 2016 Virginia Commonwealth University

Hybrid Straintronics-Spintronics: Energy-Efficient Non-Volatile Devices For Boolean And Non-Boolean Computation, Ayan K. Biswas

Theses and Dissertations

Research in future generation computing is focused on reducing energy dissipation while maintaining the switching speed in a binary operation to continue the current trend of increasing transistor-density according to Moore’s law. Unlike charge-based CMOS technology, spin-based nanomagnetic technology, based on switching bistable magnetization of single domain shape-anisotropic nanomagnets, has the potential to achieve ultralow energy dissipation due to the fact that no charge motion is directly involved in switching. However, switching of magnetization has not been any less dissipative than switching transistors because most magnet switching schemes involve generating a current to produce a magnetic field, or spin ...


Beyond Conventional C-Plane Gan-Based Light Emitting Diodes: A Systematic Exploration Of Leds On Semi-Polar Orientations, Morteza Monavarian 2016 Virginia Commonwealth University

Beyond Conventional C-Plane Gan-Based Light Emitting Diodes: A Systematic Exploration Of Leds On Semi-Polar Orientations, Morteza Monavarian

Theses and Dissertations

Despite enormous efforts and investments, the efficiency of InGaN-based green and yellow-green light emitters remains relatively low, and that limits progress in developing full color display, laser diodes, and bright light sources for general lighting. The low efficiency of light emitting devices in the green-to-yellow spectral range, also known as the “Green Gap”, is considered a global concern in the LED industry. The polar c-plane orientation of GaN, which is the mainstay in the LED industry, suffers from polarization-induced separation of electrons and hole wavefunctions (also known as the “quantum confined Stark effect”) and low indium incorporation efficiency that ...


Optical Investigations Of Ingan Heterostructures And Gesn Nanocrystals For Photonic And Phononic Applications: Light Emitting Diodes And Phonon Cavities, Shopan d. Hafiz 2016 hafizsd

Optical Investigations Of Ingan Heterostructures And Gesn Nanocrystals For Photonic And Phononic Applications: Light Emitting Diodes And Phonon Cavities, Shopan D. Hafiz

Theses and Dissertations

InGaN heterostructures are at the core of blue light emitting diodes (LEDs) which are the basic building blocks for energy efficient and environment friendly modern white light generating sources. Through quantum confinement and electronic band structure tuning on the opposite end of the spectrum, Ge1−xSnx alloys have recently attracted significant interest due to its potential role as a silicon compatible infra-red (IR) optical material for photodetectors and LEDs owing to transition to direct bandgap with increasing Sn. This thesis is dedicated to establishing an understanding of the optical processes and carrier dynamics in InGaN heterostructures for ...


Cobalt Ferrite Nanoparticles Fabricated Via Co-Precipitation In Air: Overview Of Size Control And Magnetic Properties, Dennis Toledo 2015 Florida International University

Cobalt Ferrite Nanoparticles Fabricated Via Co-Precipitation In Air: Overview Of Size Control And Magnetic Properties, Dennis Toledo

FIU Electronic Theses and Dissertations

Cobalt Ferrite has important, size-dependent magnetic properties. Consequently, an overview of particle size is important. Co-precipitation in air was the fabrication method used because it is comparatively simple and safe. The effects of three different reaction times including 1, 2, 3 hour(s) on particle size were compared. Also, the effectiveness of three different capping agents (Oleic Acid, Polyvinylpyrollidone (PVP), and Trisodium Citrate) in reducing aggregation and correspondingly particle size were examined. Using Welch’s analysis of variance (ANOVA) and the relevant post hoc tests, there was no significant difference (p=0.05) between reaction times of 1 hour and ...


Simplified Generation Of The Input Models Of Object Oriented Micromagnetic Framework (Oommf), Jinyang Yu, Rafatul Faria, Supriyo Datta, Tanya A. Faltens 2015 Bucknell University

Simplified Generation Of The Input Models Of Object Oriented Micromagnetic Framework (Oommf), Jinyang Yu, Rafatul Faria, Supriyo Datta, Tanya A. Faltens

The Summer Undergraduate Research Fellowship (SURF) Symposium

Object Oriented MicroMagnetic Framework (OOMMF) is a micromagnetic simulation tool. It takes a memory initialization file (MIF) as the input and outputs various forms of data such as data table, graph and magnetic configuration plots. It is accurate and fast compared to other existing tools such as MATLAB. Few experimentalists used it in the past, however, due to two main reasons. First, OOMMF requires a specific version of programming environment on the local computer which is difficult to be installed. Second, MIF file is very complicated to code and it also requires users to read a lengthy guidelines. Our solution ...


Mass-Positioning Of Nanodiamonds Using Squeegee Technique, Ran Cui, Mikhail Y. Shalaginov, Vladimir M. Shalaev 2015 Purdue University

Mass-Positioning Of Nanodiamonds Using Squeegee Technique, Ran Cui, Mikhail Y. Shalaginov, Vladimir M. Shalaev

The Summer Undergraduate Research Fellowship (SURF) Symposium

Fluorescent color centers in diamond nanocrystals have recently become the focus of researchers because of their potential applications in quantum information processing, nano-sensing, biomarking, and bioimaging. One of the biggest challenges in working with nanodiamonds is how to position them precisely and efficiently to create strong interaction with nanoscale photonic structures. The most popular methods to position nanodiamonds are spin-coating and transporting via scanning probe microscope tip. On the one hand, spin-coating, where nanodiamonds are randomly located, is not precise; on the other hand, the tip-based technique, where a single nanodiamond is picked and dropped, is tedious and time-consuming. Hence ...


Simulating Nanowires And Ultra-Thin Body Transistors Using Nemo5 On Nanohub.Org, Liang Yuan Dai, James E. Fonseca, Chu Yuan Chen, Gerhard Klimeck 2015 New Jersey Institute of Technology

Simulating Nanowires And Ultra-Thin Body Transistors Using Nemo5 On Nanohub.Org, Liang Yuan Dai, James E. Fonseca, Chu Yuan Chen, Gerhard Klimeck

The Summer Undergraduate Research Fellowship (SURF) Symposium

During the past twenty years, the most important aspects of semiconductor electronics have advanced into the nanometer range, resulting in exponential increases of microprocessor computing performance. As the size of electrical components continues to shrink, the cost of experimental research and industrial fabrication in this field has increased dramatically. Thus, the development of accurate nanoscale model simulations becomes necessary as a measure to decrease the high financial expenses of advancing semiconductor technology. This simulator supports atomistic modeling in order to provide an accurate description of the nanoscale devices, as current electrical components operate in the quantum regime and are affected ...


Optical Anisotropy Of Porous Polymer Film With Inverse Slanted Nanocolumnar Structure Revealed Via Generalized Spectroscopic Ellipsometry, Dan Liang, Derek Sekora, Charles Rice, Eva Schubert, Mathias Schubert 2015 University of Nebraska-Lincoln

Optical Anisotropy Of Porous Polymer Film With Inverse Slanted Nanocolumnar Structure Revealed Via Generalized Spectroscopic Ellipsometry, Dan Liang, Derek Sekora, Charles Rice, Eva Schubert, Mathias Schubert

Faculty Publications from the Department of Electrical and Computer Engineering

We use generalized spectroscopic ellipsometry to characterize the biaxial optical properties of porous polymer and slanted nanocolumnar template thin films. The porous polymer with inverse columnar structure was prepared via infiltrating polymer into the voids of the slanted nanocolumnar film and selectively removing the column material (cobalt). The anisotropic Bruggeman effective medium approximation was employed to analyze the ellipsometry data of the porous polymer film and nanocolumnar template. The classification and structure of optical anisotropy are found to be identical for both samples. The interchangeable optical behaviors between two complementary structures are attributed to the equivalency in their anisotropic polarizabilities.


Coherent Spin Transport In Nanowire Spin Valves And Novel Spintronic Device Possibilities, Md Iftekhar Hossain, Supriyo Bandyopadhyay, Jayasimha Atulasimha, Saumil Bandyopadhyay 2015 Virginia Commonwealth University

Coherent Spin Transport In Nanowire Spin Valves And Novel Spintronic Device Possibilities, Md Iftekhar Hossain, Supriyo Bandyopadhyay, Jayasimha Atulasimha, Saumil Bandyopadhyay

Supriyo Bandyopadhyay

We have proposed a spintronic infrared photodetector backed by experimental evidence and matched with theoretical prediction obtained in our labs. Unlike conventional photodetectors, it can work at room temperature with ideally infinite light-to-dark contrast ratio, infinite detectivity and zero dark current. The proposed idea is based on smart implementation of spin polarized transport. Electrons while travelling through one-dimensional channel show long spin relaxation length if they can be confined to a single conduction subband because of the elimination of major spin relaxation mechanism, namely the D’yakonov-Perel’ mechanism. With infrared light, electrons can be excited to higher subbands, resulting in ...


Strain Controlled Ultra-Low-Energy Magnetic Tunneling Junction, Hasnain Ahmad, Supriyo Bandyopadhyay, Jayasimha Atulasimha 2015 Virginia Commonwealth University

Strain Controlled Ultra-Low-Energy Magnetic Tunneling Junction, Hasnain Ahmad, Supriyo Bandyopadhyay, Jayasimha Atulasimha

Supriyo Bandyopadhyay

We are experimenting on designing a voltage-controlled ultra-low-energy Magnetic Tunneling Junction (MTJ) device using a soft single domain magnetostrictive layer (i.e. Galfenol: Fe1-xGax , x = 20 At%) coupled to a piezoelectric layer (i.e. PMN-PT). Special metal pads have been designed using photolithography to generate stress in the PMN-PT layer by applying electric field. The patterns of different shape anisotropic nano-magnets are designed using e-beam lithography and we have successfully fabricate FeGa nanomagnets with only 12 to 13 nanometer thickness by sputter deposition. These nanomagnets have been characterized by magnetic force microscopy for observing their switching capabilities. Several nano-magnets have ...


Ultrafast Electronic Relaxation Dynamics In Pbi2 Semiconductor Colloidal Nanoparticles:  A Femtosecond Transient Absorption Study, A. Sengupta, B. Jiang, K. Mandal, J. Zhang 2015 University of South Carolina - Columbia

Ultrafast Electronic Relaxation Dynamics In Pbi2 Semiconductor Colloidal Nanoparticles:  A Femtosecond Transient Absorption Study, A. Sengupta, B. Jiang, K. Mandal, J. Zhang

Krishna C. Mandal

No abstract provided.


Low-Cost, Large-Area Nanocrystalline Tio2-Polymer Solar Cells On Flexible Plastics, K. Mandal, A. Smirnov, D. Peramunage, R. Rauh 2015 University of South Carolina - Columbia

Low-Cost, Large-Area Nanocrystalline Tio2-Polymer Solar Cells On Flexible Plastics, K. Mandal, A. Smirnov, D. Peramunage, R. Rauh

Krishna C. Mandal

No abstract provided.


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