scispace - formally typeset
Search or ask a question

Where to find germanium transistors in old electronics? 

Answers from top 10 papers

More filters
Papers (10)Insight
Our work may pave a way to develop low field magnetoresistance devices from germanium and silicon.
It is suitable for processing germanium devices.
Thus, the proposed bandgap-engineered silicon-germanium biristor is preferable for low-voltage operations.
These are valuable precursors for the synthesis of germanium nanostructures and organo-germanium compounds.
We show that compact germanium emitters can be obtained by processing germanium into tensile-strained microdisks.
Germanium has emerged as an exciting alternative material for high-performance scaled CMOS, however not without difficulties.
Open accessJournal ArticleDOI
01 Nov 1977-Physics Today
38 Citations
The present invention provides a low-cost, high-performance, and highly reliable cooling system for germanium detectors.
Therefore, careful optimization of p+/n junctions is needed for decananometer germanium transistors.
Our work may be attractive to the magnetic-field sensing industry and make germanium-based magnetoelectronics further developed.
We present the factors behind the favorable features of low-valent germanium compounds, which may help to design new low-valent germanium compounds with enhanced properties in the future.

See what other people are reading

What are the most effective electrical shock prevention methods for industrial workers?
4 answers
The most effective electrical shock prevention methods for industrial workers include the use of advanced devices like electric shock prevention systems with electric field absorption shielding units and protection triggers. Additionally, implementing high-voltage DC systems with control circuits and determining units to monitor and control current flow can significantly reduce the risk of electric shocks. Moreover, the development of dual-arm collaborative robotic systems for high-voltage live work, equipped with human-computer interfaces and teleoperation functions, enhances worker safety by allowing remote operation and automation of tasks, thereby reducing labor intensity and ensuring safety during operations. Understanding electrical safety risks, the effects of electric current on the human body, and implementing appropriate protection measures are crucial for maintaining safe working conditions in industrial settings.
What are the research gaps in interleaved PFC Boost converters?
4 answers
Research gaps in interleaved PFC Boost converters include the complexity of existing modeling and controller designs, which often necessitate multiple sensors for control. Additionally, integrating interleaved structures with active power filters can introduce disturbances that affect both PFC and APF operations, highlighting a need for solutions to mitigate these issues. Furthermore, conventional PFC rectifiers face challenges in achieving high efficiency, reliability, and cost-effectiveness, especially in low line conditions, indicating a gap in the development of more efficient and reliable PFC solutions for various applications, such as electric vehicle charging systems. Lastly, while closed-loop control strategies for interleaved boost converters have been explored, there is ongoing research on optimizing the control algorithms, such as comparing the performance of PI and PID controllers to enhance the time domain response and efficiency of the converters.
What are the recent advancements in the green synthesis methods for ZnO nanoparticles?
5 answers
Recent advancements in green synthesis methods for ZnO nanoparticles involve utilizing various biological substrates like plant extracts. These methods offer eco-friendly, cost-effective, and scalable approaches, reducing environmental risks associated with traditional chemical synthesis. Plant-mediated synthesis, in particular, has gained attention for its ease of use and influence on the size and shape of the nanoparticles. The synthesized ZnO nanoparticles exhibit unique properties such as photocatalytic activity for dye degradation and antibacterial effects, making them suitable for environmental remediation and biomedical applications. Overall, the advancements in green synthesis techniques using biological sources highlight the potential of ZnO nanoparticles in various fields while promoting sustainability and safety.
What is the effect of Co substitutional doping in a FeSe2 monolayer?
5 answers
The effect of Co substitutional doping in a FeSe2 monolayer results in the system exhibiting metallic properties with relatively low light absorption and good transparency, along with an increase in the absorption coefficient to visible light and a redshift in the peak value. The magnetic moment after Co doping is measured to be 2.71 μB. Additionally, the introduction of Co in the FeSe2 monolayer induces a magnetic moment in an otherwise non-magnetic system, enhancing the magnetic properties and optical absorption coefficient significantly in the visible and infrared regions, which could benefit next-generation electronic, optoelectronic, and spintronic devices. The doped FeSe2 monolayer with Co substitution demonstrates potential for applications in spintronics, optoelectronics, and magnetic storage devices due to its favorable electronic and magnetic properties.
What is nano optoelectronics?
5 answers
Nano optoelectronics refers to the field that focuses on utilizing nanoscale materials and structures for optoelectronic devices. This area explores the integration of light and electricity at the nanoscale, enabling advancements in various applications such as photodetectors, solar cells, light-emitting diodes, and lasers. Researchers have been investigating the physical phenomena and laws involved in single-molecule optoelectronic materials and devices, including charge effects, spin effects, exciton effects, vibronic effects, and structural and orbital effects. Additionally, the development of nanostructures like Bi2S3 and metal halide perovskite has shown promise in enhancing optical properties and functionalities in optoelectronic devices. Nano optoelectronics offer opportunities for miniaturization, improved performance, and novel functionalities in a wide range of optoelectronic technologies.
How does Nano SAR compare to traditional SAR systems in terms of cost, size, and performance?
5 answers
Nano SAR systems offer a cost-effective and compact alternative to traditional SAR systems while maintaining high performance levels. Nano SAR utilizes a low-cost Nano calibration satellite for antenna pattern determination, enhancing frequency and feasibility. In contrast, traditional SAR systems rely on complex and expensive setups, posing financial challenges. The Nano SAR's small size and lightweight design make it suitable for various applications, including military reconnaissance and geological exploration. Additionally, fast SAR measuring systems show potential for more accurate estimations compared to traditional methods, although further research is needed for conclusive superiority assessments. Overall, Nano SAR systems excel in cost-efficiency, compactness, and promising performance, offering a viable solution for SAR missions with reduced financial and technological barriers.
What are the current limitations in the growth of AlN using magnetron sputtering techniques?
5 answers
Current limitations in the growth of AlN using magnetron sputtering techniques include challenges in predicting thin film structures with varying sputter parameters, the need for tight control of crystallinity, thickness uniformity, and stress for high-volume production, and the sensitivity of the formation of transparent AlN phases to N2 flow rates in different sputtering processes. Additionally, achieving high-quality AlN films requires specific processing conditions such as an optimal N2/Ar ratio and low pressure for growth. Furthermore, the deposition of AlN on different substrates can lead to varying stress states within the film, impacting its properties. These limitations highlight the importance of precise control over deposition parameters and substrate conditions to enhance the quality and uniformity of AlN thin films grown via magnetron sputtering techniques.
What is the typical range of range of efficiency, Jsc, Voc and FF of TiO2 ETL, MAPbI3 PSC?
4 answers
The efficiency of TiO2 ETL in perovskite solar cells (PSCs) can vary based on different modifications. Al-doped TiO2 showed efficiency improvements ranging from 12.5% to 14.1% with different doping concentrations. TiO2 nanorods (NRs) with lengths of 70-200 nm exhibited superior performance, with a maximum efficiency of 23.18%. Additionally, etched TiO2 with a split structure achieved efficiencies of 15.87% and 17.55% for different mixed-halide PSCs. For MAPbI3 PSCs, the reported efficiency ranged from 15.87% to 17.55%. The short-circuit current density (Jsc) for TiO2 ETL varied from 20.75 to 24.60 mA·cm-2, while the open-circuit voltage (Voc) ranged from 1.034 to 1.137 V. The fill factor (FF) for these PSCs was around 0.74 to 0.76.
What are the primary types of interactions between drugs and excipients in SEDDS?
5 answers
The primary types of interactions between drugs and excipients in Self-Emulsifying Drug Delivery Systems (SEDDS) include physical and chemical interactions. Chemical interactions can lead to degradation products, impacting formulation stability, while physical interactions can hinder complete drug extraction during sample preparation. These interactions can affect the stability of the product and the therapeutic role of the drug component, especially in the presence of excipients that actively participate in drug-excipient interactions. Understanding these interactions is crucial for optimizing formulation development to ensure prime drug bioavailability without compromising release and dissolution characteristics. Special analytical techniques are recommended to identify and address these interactions, emphasizing the importance of regulatory implications in achieving optimal drug delivery outcomes.
How does plasma treatment affect the field emission properties of vertically aligned tellurium nanorods?
5 answers
Plasma treatment significantly impacts the field emission properties of vertically aligned tellurium nanorods. The treatment alters the morphology and structure of the nanorods, leading to improved emission characteristics. Specifically, the plasma treatment enhances the field emission properties by reducing the turn-on electric field, increasing the emission current density, and improving the field enhancement factor. Additionally, the treatment can induce the formation of defects in the nanorods, which further enhances their field emission performance. The controlled growth of tellurium nanowire arrays without catalysts also demonstrates notable field emission properties, with a low turn-on field and high field enhancement factor, showcasing the potential for diverse electronic applications.
Can C60-Si be used as an effective adsorbent for carbon monoxide ?
5 answers
Yes, C60-Si can be utilized as an effective adsorbent for carbon monoxide (CO). Research indicates that C60 fullerene assemblies on surfaces, particularly when deposited on specific substrates like a TBB monolayer on a Si(111)-boron surface, can create stable structures suitable for adsorption. Additionally, the adsorption of CO can be achieved using a carbon monoxide adsorbent composed of a carrier like a silicoaluminophosphate molecular sieve, demonstrating high adsorption capacity and industrial application potential. Furthermore, the use of functionalized silica adsorbents has shown promising results in rapidly adsorbing CO even at low concentrations, making them effective for scenarios like protective equipment for emergency services. These findings collectively suggest that C60-Si, in combination with appropriate substrates or carriers, can indeed serve as an efficient adsorbent for carbon monoxide.