Polymer-coated synthetic fibers designed for miniaturized sample preparation process

Abstract Trends in the packaging of semiconductors are towards miniaturization and high functionality. The package-on-package(PoP) with increasing demands is beneficial in cost and space saving. The main failure mechanisms associated with PoP technology, including open joints and warpage, have created a lot of challenges for Assembly and Failure Analysis (FA). This paper outlines the sample preparation process steps to overcome the challenges to enable successful failure analysis and optical probing.

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Analysis of Synthetic Fibers by Diamond Cell and Sapphire Cell Infrared Spectrophotometry

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/61.3.526 ◽

1978 ◽

Vol 61 (3) ◽

pp. 526-532

Author(s):

Leonard K Read ◽

Robert J Kopec

Keyword(s):

Sample Preparation ◽

Analytical Methods ◽

Nondestructive Method ◽

Spectrophotometric Analysis ◽

Infrared Spectrophotometry ◽

Generic Type ◽

Synthetic Fibers ◽

Fiber Sample

Abstract A rapid, simple, and nondestructive method of sample preparation and analysis is described for the infrared spectrophotometric analysis of synthetic fibers. This method uses a combined diamond cell and sapphire cell technique that yields highly resolved spectra with microgramsize fiber samples. From these highly resolved spectra, the generic type of fiber can be readily determined. Although the fiber sample has been physically crushed, it is not destroyed during the analysis and can be further examined by other analytical methods.

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The Influence of Sample Preparation on the Strength Results ofa Pan-based Carbon Fiber

Chemistry & Chemical Technology ◽

10.23939/chcht04.04.329 ◽

2010 ◽

Vol 4 (4) ◽

pp. 329-337

Author(s):

Fabio Pereira ◽

◽

Fabiana Vieira ◽

Luiz de Castro ◽

Ricardo Michel ◽

...

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Carbon Fiber ◽

Sample Preparation ◽

Young’S Modulus ◽

Carbon Fibers ◽

Weibull Modulus ◽

Strong Influence ◽

Mechanical Tests ◽

Preparation Process

In this work the influence of different configurations in the sample preparation process on commercial polyacrylonitrile-based carbon fibers mechanical tests were studied. Mechanical properties, such as tensile strength, Young’s modulus, elongation and Weibull modulus, were evaluated. The results showed that all sample preparation steps may have strong influence on the results.

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Influence of sample preparation process on basic properties of biofuels

Paliva ◽

10.35933/paliva.2021.04.05 ◽

2021 ◽

pp. 141-148

Author(s):

Hana Lisá ◽

Martin Lisý ◽

Patrik Elbl ◽

Marek Baláš ◽

Tereza Zlevorová ◽

...

Keyword(s):

Sample Preparation ◽

Water Content ◽

Volatile Matter ◽

Moisture Loss ◽

Grinding Process ◽

Preparation Process ◽

Wood Biomass ◽

Crambe Abyssinica ◽

Adjustment Method ◽

Combustion Processes

The characteristic properties of non-wood biomass used in combustion processes are monitored, such as water content, ash, volatile matter. Biomass is usually not homogenous and of suitable dimensions for these determinations. This is the reason for the necessary adjustment of samples for analysis. But modifying the samples may change their properties. In this publication, the influence of the grinding process in a rotor mill on the content of water, volatile matter and ash in non-wood biomass samples was studied. Samples of flax, Crambe abyssinica, amaranth and rye were analyzed. All analyses showed moisture loss from the sample during grinding and in the case of flax, the loss of volatile matter was observed. It means the rotor mill is suitable for sample preparation prior to analysis. But for oil plants it is necessary to choose another mill or adjustment method.

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TEM sample preparation of transparent polycrystalline alumina: Correlation between optical microscopy and TEM images

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100122423 ◽

1992 ◽

Vol 50 (1) ◽

pp. 404-405

Author(s):

K.J. Ostreicher ◽

C.M. Sung

Keyword(s):

Sample Preparation ◽

Optical Microscopy ◽

Grain Orientation ◽

Research Effort ◽

Good Method ◽

Preparation Process ◽

Orientation Relationships ◽

Polycrystalline Alumina ◽

Pull Out ◽

Grain Size And Shape

Since the discovery of the Lucalox process, a considerable amount of research effort has been devoted to locating both impurities and additives in transparent polycrystalline alumina (PCA). The control of grain growth and porosity by introducing dopants such as MgO and Y2O3 has been shown to directly affect the strength and transmittance properties of the material. The presence of impurities or dopants in excess of their solubility limits leads to precipitation in the bulk and along grain boundaries. It is essential that TEM sample preparation be controlled so as not to introduce damage or pull-out of sec materials it becomes a good method to obtain information concerning grain size and shape, grain orientation relationships, and porosity. The purpose of this study is to describe such a sample preparation process and demonstrate its usefulness in allowing effective correlation of optical microscopy and TEM results.

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A sample preparation process for LC–MS/MS analysis of total protein drug concentrations in monkey plasma samples with antibody

Journal of Chromatography B ◽

10.1016/j.jchromb.2006.09.039 ◽

2007 ◽

Vol 847 (2) ◽

pp. 133-141 ◽

Cited By ~ 19

Author(s):

Qin C. Ji ◽

Ramona Rodila ◽

Tawakol A. El-Shourbagy

Keyword(s):

Sample Preparation ◽

Total Protein ◽

Protein Drug ◽

Preparation Process ◽

Plasma Samples ◽

Ms Analysis ◽

Drug Concentrations ◽

Monkey Plasma

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Temperature Measurements using Thermal Sensitive Paint

Transactions on Aerospace Research ◽

10.2478/tar-2018-0021 ◽

2018 ◽

Vol 2018 (3) ◽

pp. 37-48

Author(s):

Łukasz Jeziorek ◽

Patryk Widera

Keyword(s):

Transfer Function ◽

Sample Preparation ◽

Surface Temperature ◽

Red Light ◽

Computational Procedure ◽

Short Description ◽

Temperature Measurements ◽

Preparation Process ◽

Advantages And Disadvantages ◽

Light Excitation

Abstract Article highlights practical issues concerning temperature measurements using thermal sensitive paint (abbrev. TSP). TSP paint after blue light excitation emits red light with intensity dependent on its temperature. Temperature measurements are preceded with paint calibration, according to exact experiment conditions. Purpose of calibration is to find transfer function between intensity of emitted radiation and surface temperature. To achieve this goal, special computational procedure is implemented. Devices and methodology used for paint calibration are briefly described as well as measuring sample preparation process. Short description is devoted to the procedure for calculation temperature using recorded intensity. Results obtained during calibration are presented. Final conclusions about perspective of using thermal sensitive paint in laboratory are presented, as well as advantages and disadvantages of TSP method versus other methods currently used in temperature measurements.

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Simultaneous Quantitative Determination of Different Ceramide and Diacylglycerol Species in Cultured Cells by Using Liquid Chromatography–Electrospray Tandem Mass Spectrometry

Periodica Polytechnica Chemical Engineering ◽

10.3311/ppch.15357 ◽

2020 ◽

Vol 64 (4) ◽

pp. 421-429

Author(s):

Anna Somogyi ◽

Mária Berinkeiné Donkó ◽

Farkas Sarnyai ◽

Gergely Becskereki ◽

Miklós Csala ◽

...

Keyword(s):

Mass Spectrometry ◽

Liquid Chromatography ◽

Sample Preparation ◽

Tandem Mass Spectrometry ◽

Cultured Cells ◽

Tandem Mass ◽

Preparation Process ◽

Electrospray Tandem Mass Spectrometry ◽

Wide Range

A sensitive, reproducible reverse-phased high performance liquid chromatography electrospray tandem mass spectrometry (HPLC-ESI-MS/MS) method with simple sample preparation was developed for the simultaneous determination of a wide range of ceramides, diacylglycerols (DAGs) in cultured cells. Chromatographic separation of the compounds was achieved in a 14-minute run using a C8 column with a gradient elution by methanol and 10 mM ammonium acetate buffer as mobile phase at a flow rate of 0.5 ml/min. Various ceramides, DAGs were detected with a triple quadrupol system in multiple reaction monitoring mode, which is based on a soft positive electrospray ionization. The usual sample preparation process was shortened by the application of pure methanol for the extraction instead of the widely used methanol/chloroform mixture. C17:0 ceramide which does not occur in the cell samples, was used as an internal standard. The sample preparation process was optimized and the methodology was tested on a human hepatocarcinoma cell culture. Our results clearly showed accumulation of some ceramides and DAGs in the cells treated with BSA-conjugated palmitate for 8 hours. Since both ceramides and DAGs are important lipid intermediates and signal messengers, alteration in their cellular levels have major impact on cell functions, and thus our novel analytic method can be widely used in lipotoxicity research. The presented technique can be further developed to measure other intermediates of ceramide synthesis and other derivatives of DAGs as well.

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A beginner’s guide to mass spectrometry–based proteomics

The Biochemist ◽

10.1042/bio20200057 ◽

2020 ◽

Vol 42 (5) ◽

pp. 64-69

Author(s):

Ankit Sinha ◽

Matthias Mann

Keyword(s):

Analytical Chemistry ◽

Mass Spectrometry ◽

Data Analysis ◽

Sample Preparation ◽

Single Cell Analysis ◽

Clinical Applications ◽

Preparation Process ◽

Cell Analysis ◽

Analysis Strategies ◽

Quantitative Profiling

Mass spectrometry (MS)-based proteomics is the most comprehensive approach for the quantitative profiling of proteins, their interactions and modifications. It is a challenging topic as a firm grasp requires expertise in biochemistry for sample preparation, analytical chemistry for instrumentation and computational biology for data analysis. In this short guide, we highlight the various components of a mass spectrometer, the sample preparation process for conversion of proteins into peptides, and quantification and analysis strategies. The advancing technology of MS-based proteomics now opens up opportunities in clinical applications and single-cell analysis.

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