Gallium Arsenide
Gallium Arsenide - Related Videos
09:00
An In Vitro Enzymatic Assay to Measure Transcription Inhibition by Gallium(III) and H3 5,10,15-tris(pentafluorophenyl)corroles
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Cited by 1 •
2015
Gallium(III) 5,10,15-(tris)pentafluorophenylcorrole and its freebase analogue exhibit low micromolar cell cytotoxicity. This manuscript describes an RNA transcription reaction, imaging RNA with an ethidium bromide-stained gel, and quantifying RNA with UV-Vis spectroscopy, in order to assess transcription inhibition by corroles and demonstrates a straightforward method of evaluating anticancer candidate properties.
15:58
Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
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Cited by 3 •
2013
The technique of femtosecond four-wave mixing is described, including spectrally-resolved and time-resolved configurations. We illustrate the utility of this technique for the investigation of crucial physical properties in the III-V diluted magnetic semiconductors, afforded by its nonlinearity and high temporal resolution.
15:47
Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots
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Cited by 3 •
2013
This paper presents a detailed fabrication protocol for gate-defined semiconductor lateral quantum dots on gallium arsenide heterostructures. These nanoscale devices are used to trap few electrons for use as quantum bits in quantum information processing or for other mesoscopic experiments such as coherent conductance measurements.
09:06
Development of a 68Gallium-Labeled D-Peptide PET Tracer for Imaging Programmed Death-Ligand 1 Expression
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Cited by 6 •
2023
This study developed a noninvasive and real-time method to evaluate the distribution of programmed death-ligand 1 in the whole body, based on positron emission tomographic imaging of [68Ga] D-dodecapeptide antagonist. This technique has advantages over conventional immunohistochemistry and improves the efficiency of identifying appropriate patients who will benefit from immune checkpoint blockade therapy.
10:53
Scanning-probe Single-electron Capacitance Spectroscopy
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2013
Scanning-probe single-electron capacitance spectroscopy facilitates the study of single-electron motion in localized subsurface regions. A sensitive charge-detection circuit is incorporated into a cryogenic scanning probe microscope to investigate small systems of dopant atoms beneath the surface of semiconductor samples.
FAQs
A direct bandgap allows electrons and holes to interact with light efficiently, supporting both absorption and emission within a device. This property is especially important when engineering components that must convert electrical energy to light or light to electrical energy. It explains the material’s relevance to solar cells, light-emitting diodes, and laser diodes.
High electron mobility means electrons can move rapidly through the GaAs crystal. In engineering terms, that behavior supports devices intended for high-frequency operation, where rapid carrier motion is important to performance. Consequently, GaAs can be selected for demanding radio-frequency designs when the desired operating behavior outweighs the material’s manufacturing and cost disadvantages.
Compared with silicon, GaAs can offer stronger performance in demanding radio-frequency and optoelectronic applications because its direct bandgap and high electron mobility address both electrical and optical requirements. The comparison is therefore application-dependent rather than absolute: engineers must balance performance advantages against brittle wafers, higher cost, and more complex processing.
Manufacturing choices must accommodate brittle wafers, higher cost, and more complex processing. These factors affect how components are produced and can influence the overall system design, not merely the material choice. A design that benefits from GaAs properties therefore requires engineering tradeoffs between targeted performance and practical fabrication demands.
GaAs is suited to several device categories with different performance goals. Radio-frequency electronics benefit from rapid electron transport, while solar cells, light-emitting diodes, and laser diodes benefit from efficient interaction with light. This range makes the material relevant across electronic and optoelectronic engineering rather than limiting it to one device class.
Start by identifying whether the application is primarily high-frequency, optical, or both, then determine whether GaAs’s electron mobility or direct-bandgap behavior addresses that need. Next, include wafer brittleness, cost, and processing complexity in the design assessment. This approach connects material properties to expected device performance and manufacturing feasibility.