A combinatorial sample-preparation robot system using the volumetric-weighing method

Suehara, Shigeru; Konishi, Teruko; Fujimoto, Kenjiro; Takeda, Takashi; Fukuda, Masaru; Koike, Minoru; Inoue, Satoru; Watanabe, Mamoru

doi:10.1016/j.apsusc.2005.05.082

Cited by 8 publications

(5 citation statements)

References 12 publications

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“…ZrO 2 :Ti, Y samples were prepared according to the combinatorial chemistry technique using a combinatorial sample-preparation robot system (Combit), 19 where the amount of dopant (Ti and Y) varied between 0 and 0.15 mol %. The metal aqueous solutions were mixed and transferred to an alumina plate with 36 reaction pockets.…”

Section: ■ Experimental Methodsmentioning

confidence: 99%

Afterglow Properties and Trap-Depth Control in ZrO₂:Ti, M (M = Ca²⁺, Y³⁺, Nb⁵⁺, W⁶⁺)

Aimi¹,

Takahashi²,

Fujimoto³

2020

Inorg. Chem.

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Ti-doped ZrO 2 is a chemically stable and persistent luminescence material. Doping and co-doping is an effective approach for improving the afterglow properties of phosphors, but few studies have investigated the co-doping of ZrO 2 :Ti systems. This study aimed to synthesize ZrO 2 :Ti, M (M = Ca 2+ , Y 3+ , Ti single-doped, Nb 5+ , W 6+ ) and evaluate the luminescent properties of the resulting materials, with a specific focus on the relationship between trap depth and the valence state of the co-doped cation. The ratio of the luminescent center to co-doped ion was optimized using the combinatorial approach, where 0.09 mol % Ti led to the best afterglow duration. The emission decay curves of each codoped sample differed significantly, where a change in curvature was observed in the Ti single-doped and W 6+ co-doped samples due to the presence of multiple traps. From the thermoluminescence glow curves, the trap originating in an oxygen vacancy with a peak at around 270 K was observed. The trap depth was dependent on electrostatic interactions between the trapped electrons and their surrounding cations, and thus related to the valence of the codopant. Overall, co-doping with high-valent cations led to improved afterglow duration.

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Section: ■ Experimental Methodsmentioning

confidence: 99%

Afterglow Properties and Trap-Depth Control in ZrO₂:Ti, M (M = Ca²⁺, Y³⁺, Nb⁵⁺, W⁶⁺)

Aimi¹,

Takahashi²,

Fujimoto³

2020

Inorg. Chem.

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“…The high-throughput powder preparation system based on combinatorial techniques developed by Fujimoto et al , and Suehara et al is expected to synthesize more than 100 samples per day. It is not ideal to require 1–2 days of work to fill the capillary with a powder library of 100 samples daily.…”

mentioning

confidence: 99%

“…Figure shows a group of photographs showing the tool and library setting flow of the prototype we are currently using, after repeated prototyping with a 3D printer. The combinatorial high-throughput material preparation system previously reported − can automatically place 36 different libraries at equal intervals on a reaction substrate of 35 × 35 × 5 mmt in size. When these systems are not used, a well-grounded powder can be simply placed on this substrate.…”

mentioning

confidence: 99%

Development of Measurement Tools for High-Throughput Experiments of Synchrotron Radiation XRD and XAFS on Powder Libraries

2020

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We propose to minimize the sampling time for high-throughput measurements of powder X-ray diffraction (XRD) and X-ray absorption fine structure (XAFS) in synchrotron radiation. The conventional synchrotron radiation powder X-ray diffraction method requires filling of a capillary tube, but a structure-refining diffraction pattern could be obtained by transferring the crushed powder to a tape and rotating the cassette-tape tool by ±5°around the sample position. XAFS spectra could also be measured with the sample attached to the tape. The time required for sample preparation was greatly reduced, which made high-throughput experiments with powders in synchrotron radiation experiments more accessible.

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“…Fluid-handling robots have been developed and used for automated solution-preparation [1,2,3]. However, these robots suffer from many drawbacks.…”

Section: Introductionmentioning

confidence: 99%

“…However, these robots suffer from many drawbacks. First, they rely on high-accuracy microtubes and microtips, which are expensive and fragile [1,2]. Moreover, most fluid-handling robots can only process solutions whose volumes are in the range of microliter or higher.…”

Section: Introductionmentioning

confidence: 99%

Automated, accurate, and inexpensive solution-preparation on a digital microfluidic biochip

Pamula

Chakrabarty

2008

2008 IEEE Biomedical Circuits and Systems Conference

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Abstract-Solution-preparation is a basic and repetitive step for many biological and chemical experiments in the laboratory. It uses stock solutions of sample, reagents, and diluents to derive various mixed solutions with the required concentration levels. Manual solution-preparation methods are time-consuming, imprecise, and they require large volumes of liquid. We propose an electrowetting-based "digital" microfluidic biochip design for automated solution-preparation. An efficient solutionpreparation algorithm is also presented to generate a preparation plan that lists the intermediate mixing steps needed to generate the target solutions with the required concentrations. It determines the type, concentration, and the number of dispensed droplets of stock solutions. The proposed automated solutionpreparation algorithm and biochip platform are evaluated using a protein-crystallization application.

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A combinatorial sample-preparation robot system using the volumetric-weighing method

Cited by 8 publications

References 12 publications

Afterglow Properties and Trap-Depth Control in ZrO₂:Ti, M (M = Ca²⁺, Y³⁺, Nb⁵⁺, W⁶⁺)

Afterglow Properties and Trap-Depth Control in ZrO₂:Ti, M (M = Ca²⁺, Y³⁺, Nb⁵⁺, W⁶⁺)

Development of Measurement Tools for High-Throughput Experiments of Synchrotron Radiation XRD and XAFS on Powder Libraries

Automated, accurate, and inexpensive solution-preparation on a digital microfluidic biochip

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A combinatorial sample-preparation robot system using the volumetric-weighing method

Cited by 8 publications

References 12 publications

Afterglow Properties and Trap-Depth Control in ZrO2:Ti, M (M = Ca2+, Y3+, Nb5+, W6+)

Afterglow Properties and Trap-Depth Control in ZrO2:Ti, M (M = Ca2+, Y3+, Nb5+, W6+)

Development of Measurement Tools for High-Throughput Experiments of Synchrotron Radiation XRD and XAFS on Powder Libraries

Automated, accurate, and inexpensive solution-preparation on a digital microfluidic biochip

Contact Info

Product

Resources

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Afterglow Properties and Trap-Depth Control in ZrO₂:Ti, M (M = Ca²⁺, Y³⁺, Nb⁵⁺, W⁶⁺)

Afterglow Properties and Trap-Depth Control in ZrO₂:Ti, M (M = Ca²⁺, Y³⁺, Nb⁵⁺, W⁶⁺)