Modulation Doped Fets

Morkoç̌, H.

doi:10.1002/047134608x.w3149

Cited by 2 publications

(2 citation statements)

References 89 publications

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“…Among this complex reaction space, the ZnO nanoshells represent the most interesting observed product based on the technological value of this material and the difficulty of forming it under near-neutral aqueous conditions, as has been achieved here. In addition to the above TEM and DLS data, poly deoxythymidine-based DNA templating of ZnO crystallization is also supported by the closely matched spacing that occurs between adjacent DNA bases in a given oligomer (0.34 nm) and the a lattice constant (corresponding to the Zn–Zn spacing) in the basal plane of wurzite ZnO (0.325 nm) . Additionally, the positioning of nucleobase ligands has been shown important toward achieving ordered DNA–metal complexes .…”

Section: Resultsmentioning

confidence: 72%

Efficient Selection of Biomineralizing DNA Aptamers Using Deep Sequencing and Population Clustering

Bawazer

Newman

et al. 2013

ACS Nano

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DNA-based information systems drive the combinatorial optimization processes of natural evolution, including the evolution of biominerals. Advances in high-throughput DNA sequencing expand the power of DNA as a potential information platform for combinatorial engineering, but many applications remain to be developed due in part to the challenge of handling large amounts of sequence data. Here we employ high-throughput sequencing and a recently developed clustering method (AutoSOME) to identify single-stranded DNA sequence families that bind specifically to ZnO semiconductor mineral surfaces. These sequences were enriched from a diverse DNA library after a single round of screening, whereas previous screening approaches typically require 5-15 rounds of enrichment for effective sequence identification. The consensus sequence of the largest cluster was poly d(T)30. This consensus sequence exhibited clear aptamer behavior and was shown to promote the synthesis of crystalline ZnO from aqueous solution at near-neutral pH. This activity is significant, as the crystalline form of this wide-bandgap semiconductor is not typically amenable to solution synthesis in this pH range. High-resolution TEM revealed that this DNA synthesis route yields ZnO nanoparticles with an amorphous-crystalline core-shell structure, suggesting that the mechanism of mineralization involves nanoscale coacervation around the DNA template. We thus demonstrate that our new method, termed Single round Enrichment of Ligands by deep Sequencing (SEL-Seq), can facilitate biomimetic synthesis of technological nanomaterials by accelerating combinatorial selection of biomolecular-mineral interactions. Moreover, by enabling direct characterization of sequence family demographics, we anticipate that SEL-Seq will enhance aptamer discovery in applications employing additional rounds of screening.

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Section: Resultsmentioning

confidence: 72%

Efficient Selection of Biomineralizing DNA Aptamers Using Deep Sequencing and Population Clustering

Bawazer

Newman

et al. 2013

ACS Nano

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“…Much less is known about group IV nitride semiconductor applications, where most research to date has been directed to group IIIA compounds (i.e., AlN, InN, GaN) for solid-state lighting and high-power electronics . Among the few rare examples, (Sn,Ge,Si) 3 N 4 alloys with experimentally determined spinel crystal structures , have been theoretically proposed for the use in light-emitting diodes based on the tunable band gap values .…”

Section: Introductionmentioning

confidence: 99%

Design of Metastable Tin Titanium Nitride Semiconductor Alloys

Bikowski

Siol

et al. 2017

Chem. Mater.

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We report on design of optoelectronic properties in previously unreported metastable tin titanium nitride alloys with spinel crystal structure. Theoretical calculations predict that Ti alloying in metastable Sn 3 N 4 compound should improve hole effective mass by up to 1 order of magnitude, while other optical bandgaps remains in the 1−2 eV range up to x ∼ 0.35 Ti composition. Experimental synthesis of these metastable alloys is predicted to be challenging due to high required nitrogen chemical potential (Δμ N ≥ +1.0 eV) but proven to be possible using combinatorial cosputtering from metal targets in the presence of nitrogen plasma. Characterization experiments confirm that thin films of such (Sn 1−x Ti x ) 3 N 4 alloys can be synthesized up to x = 0.45 composition, with suitable optical band gaps (1.5−2.0 eV), moderate electron densities (10 17 to 10 18 cm −3 ), and improved photogenerated hole transport (by 5×). Overall, this study shows that it is possible to design the metastable nitride materials with properties suitable for potential use in solar energy conversion applications.

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Modulation Doped Fets

Abstract: The sections in this article are Analytical Description of Modulation Doped Field Effect Transistors Power Modeling Processing Channel Design Modfet Performance AIGaN/GaN Modfets Si 1− x Ge … Show more

Cited by 2 publications

References 89 publications

Efficient Selection of Biomineralizing DNA Aptamers Using Deep Sequencing and Population Clustering

Efficient Selection of Biomineralizing DNA Aptamers Using Deep Sequencing and Population Clustering

Design of Metastable Tin Titanium Nitride Semiconductor Alloys

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