A calibration algorithm based on one-port vector network analyzer (VNA) calibration for scanning microwave microscopes (SMMs) is presented and used to extract quantitative carrier densities from a semiconducting n-doped GaAs multilayer sample. This robust and versatile algorithm is instrument and frequency independent, as we demonstrate by analyzing experimental data from two different, cantilever- and tuning fork-based, microscope setups operating in a wide frequency range up to 27.5 GHz. To benchmark the SMM results, comparison with secondary ion mass spectrometry is undertaken. Furthermore, we show SMM data on a GaAs p-n junction distinguishing p- and n-doped layers.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1063/1.5015966 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Benefits of Microwave-Assisted Heat Treatment for Sintered Diopside Glass-Ceramics.
Materials (Basel)
January 2025
Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, Via P. Vivarelli 10, 41125 Modena, Italy.
Sinter-crystallization is a specific method of producing glass-ceramics that allows the manufacture of complexly shaped products, composites and solder. However, it usually is limited when the glass powders used are characterized by a high crystallization trend. This study proposes a new opportunity to improve the sinter-crystallization and demonstrates the benefits of microwave processing using diopside (CaMg(SiO)) glass-ceramics with an enhanced crystallinity of ~70%.
View Article and Find Full Text PDFAdvanced flame-retardant biocomposites: Polylactic acid reinforced with green gallic acid‑iron‑phosphorus coated flax fibers.
Int J Biol Macromol
January 2025
Department of Chemical Engineering Materials Environment, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy.
This study introduces a sustainable approach for enhancing the fire retardancy and smoke suppression of poly(lactic acid) (PLA) composites, contributing to addressing one of the major challenges in biocomposites that limits their application in various engineering fields, as automotive and construction sectors. Flax fibers (FF) were surface functionalized with a novel organic-inorganic hybrid flame retardant (FR), offering a sustainable bioinspired approach that mitigates potential mechanical properties impairment and FR leaching, which can cause environmental concerns and reduced composite durability. The process involves a three-step coating procedure.
View Article and Find Full Text PDFComparison of CT-Guided Microwave Ablation of Liver Malignancies with and Without Intra-Arterial Catheter Placement for Contrast Administration.
Curr Oncol
January 2025
Department of Diagnostic and Interventional Radiology, University Hospital Leipzig, 04103 Leipzig, Germany.
Background: The aim of this study was to compare microwave ablation (MWA) with and without prior placement of an intra-arterial catheter for the purpose of application of contrast medium (CM).
Methods: 148 patients (45 female, 65.1 ± 14.
Microwave-assisted extraction of dandelion root polysaccharides: Extraction process optimization, purification, structural characterization, and analysis of antioxidant activity.
Int J Biol Macromol
January 2025
College of Food and Bioengineering, Qiqihar University, Qiqihar 161006, PR China; Engineering Research Center of Plant Food Processing Technology, Ministry of Education, Qiqihar 161006, PR China. Electronic address:
This study aimed to establish a microwave-assisted method (MAE) for the efficient extraction of polysaccharides from dandelion roots. This study investigated the molecular structure and bioactivity of the polysaccharides from dandelion roots. Extraction conditions were optimized using response surface methodology (RSM).
View Article and Find Full Text PDFImproved synthesis and characterization of bile acid esters: Organogelation and supramolecular properties.
Steroids
January 2025
Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Mérida. Km 6 Antigua Carretera a Progreso. Apdo. Postal 73, Cordemex, 97310 Mérida, Yuc, México. Electronic address:
Article Synopsis
- Bile acid esters and their derivatives are important in supramolecular chemistry, biomedicine, and nanomaterials.
- This study focuses on synthesizing esters from cholic, deoxycholic, and lithocholic acids using microwave-assisted heating, which enhances the efficiency of the process.
- The research evaluates the gel-forming potential of these esters, using techniques like DSC and SEM to reveal their unique structural and thermal characteristics, suggesting their usefulness in creating new functional materials.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!