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Tektronix inc 6221 programmable current source
6221 Programmable Current Source, supplied by Tektronix inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/source+current/6221+programmable+current+source/pmc09861322-67-27-31
Average 90 stars, based on 1 article reviews
6221 programmable current source - by Bioz Stars, 2026-11
90/100 stars

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Article Title: Comprehensive understanding of charge and mass transport in BaZr0.1Ce0.7Y0.1Yb0.1O3−δ
Article Snippet: This work reports transport properties of BaZr0.1Ce0.7Y0.1Yb0.1O3− δ (BZCYYb1711), studied during oxidation/ reduction and hydration/dehydration using electrical conductivity relaxation (ECR) measurements.. The oxidation/reduction displayed typical monotonic conductivity relaxation behavior, attributed to the ambipolar diffusion of oxygen vacancies (V o ) and electron-holes (h), and oxygen surface exchange coefficient (k) were >1 order of magnitude higher than bulk diffusivities (D̃), indicating a diffusion-controlled process.. Whereas, hydration/dehydration displayed a temperature-dependent gradual transition from monotonic to non-monotonic relaxation profile.

Article Title: A Highly Versatile X-ray and Electron Beam Diamond Dosimeter for Radiation Therapy and Protection
Article Snippet: Before taking the measurements, a proper calibration procedure of the front-end electronics was carried out by emulating the photocurrent pulsed response of the detector with a Keithley 6221 programmable current source (Keithley Instruments, Solon, OH, USA), thus evaluating the transfer function (i.e., the analog-to-digital output code as a function of the input charge) of the instrument.

Article Title: Flexible Electrochemical Transducer Platform for Neurotransmitters
Article Snippet: Electrical conductivity measurements of the pellets/films (1 mm thickness) were performed with a standard four-probe conductivity meter using a Keithley 6221 programmable current source and a 2128A nanovoltmeter.

Article Title: Role of p -Benzoquinone in the Synthesis of a Conducting Polymer, Polyaniline
Article Snippet: The corresponding experimental setup used a Keithley 6220 programmable current source, a Keithley 6485 picoammeter, a Keithley 2000 multimeter, a Keithley 706 scanner equipped with a Keithley 7152l low-current matrix card, and two Keithley 6517B electrometers as high impedance voltmeters.

Article Title: Macroscopically oriented (3-pentadecyl phenol) dangled fluorene based conductive polymer through side chain engineering for microelectronics
Article Snippet: Four-probe conductivity meter was used for electrical conductivity measurements, which consist of a Keithley 6221 programmable current source and a 2128A Nano voltmeter.

Article Title: Improving the Performance of HPHT-Diamond Detectors for Pulsed X-Ray Dosimetry Using the Synchronous Detection Technique
Article Snippet: A single-crystal diamond sample grown by high-pressure high-temperature (HPHT) technique was used for the fabrication of a metal–semiconductor–metal (MSM) photoconductor.. The sample quality was evaluated by means of spectral photocurrent measurements highlighting the presence of a significant density of defect states within the diamond bandgap, responsible for trapmediated conduction mechanisms.. The photoconductor was fully characterized under 6 MeV pulsed X-rays, sourced by a medical linear accelerator (LINAC), in the 0.05–20 Gy and 0.017–0.100 Gy/s dose (D) and dose-rate (DR) ranges, respectively.

Article Title: Nanowires of polyaniline festooned silver coated paper electrodes for efficient solid-state symmetrical supercapacitors
Article Snippet: Electrical conductivity measurements of the paper electrodes were performed with a standard four-probe conductivity meter using a Keithley 6221 programmable current source and a 2128A nanovoltmeter.

Article Title: Polyaniline-cobalt oxide nano shrubs based electrodes for supercapacitors with enhanced electrochemical performance
Article Snippet: The present work focuses on the design and development of highly oriented well aligned nano shrubs of polyaniline decorated Co3O4 (COP) and demonstration as an efficient electrode for the fabrication of supercapacitors.. Morphological results suggest that COPs are composed of PANI nano shrubs grown from the pores of Co3O4 to form a three-dimensional nanostructure.. Further, supercapacitor with the configurations of [(indium tin oxide)ITO-COP/1M Na2SO4/COP-ITO] was fabricated and its performance evaluated leading to high specific capacitance value (1151 F g 1 @ 3 A g 1), high rate performance of 70% at the current density ranging from 3 to 20 A g 1, and excellent cycling stability (92% after 5000 cycles @ 10 A g 1).



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