Synchrotron-Based Techniques for the Quantification, Imaging, Speciation, and Structure Characterization of Metals in Environmental and Biological Samples

2019 ◽  
pp. 57-71
Author(s):  
Yu-Feng Li ◽  
Chunying Chen
Keyword(s):  
Biological Samples ◽  
Structure Characterization ◽  
Environmental And Biological Samples

Structure Characterization of Low Cost Fabricated Soft Material Built Microchannel

2016 ◽  
Vol 857 ◽  
pp. 578-582 ◽  
Author(s):  
Q. Humayun ◽  
Uda Hashim ◽  
Che Mohd Ruzaidi
Keyword(s):  
Biological Samples ◽  
Low Cost ◽  
Soft Material ◽  
Fabrication Process ◽  
Structure Characterization ◽  
Current Paper ◽  
Micro Channel ◽  
Inoculation Technique ◽  
Laboratory Activities

To perform the entire laboratory activities on a centimeter limit scale electronic chip, the most important aspect is to fabricate a device which persist sensitive and selective for the delivery of fluids flow and have the ability to execute a fast mixing of distinctive chemicals and bio samples. To resolve this issues the current paper is one of the good struggle, therefore the objective was arranged in according to the scope of research such as; to design and fabricate a polydimethylsiloxane (PDMS) material made, micro channel and its structure characterization for the investigation of internal subterranean area. By using an AutoCAD software the channel was first designed, however for the fabrication process the design was transferred to mask. Starting from SU-8 resist the pattern was transferred, and then by using the polydimethylsiloxane (PDMS) the mold was fabricated by adopting a low cost photolithography technique. Finally by employing Hawk 3 D surface nanoprofiler the structure was characterized. In our forthcoming research the device will be tested for real biological samples using a simple hand-operated inoculation technique.

Characterization of carbon nanotubes and analytical methods for their determination in environmental and biological samples: A review

2015 ◽  
Vol 853 ◽  
pp. 77-94 ◽  
Author(s):  
C. Herrero-Latorre ◽  
J. Álvarez-Méndez ◽  
J. Barciela-García ◽  
S. García-Martín ◽  
R.M. Peña-Crecente
Keyword(s):  
Carbon Nanotubes ◽  
Biological Samples ◽  
Analytical Methods ◽  
Environmental And Biological Samples

Development of nanomaterials-fabricated paper-based sensors for the analysis of environmental and biological samples: A Review

2021 ◽  
Vol 17 ◽  
Author(s):  
Monisha ◽  
Kamlesh Shrivas ◽  
Tarun Kumar Patle ◽  
Reena Jamunkar ◽  
Vikas Kumar Jain ◽  
...  
Keyword(s):  
Metal Ions ◽  
Biological Samples ◽  
Low Cost ◽  
Conductive Polymer ◽  
Toxic Metal ◽  
Clinical Samples ◽  
Toxic Substances ◽  
Environmental And Biological Samples ◽  
Printing Techniques

Background: Currently, the environmental and biological samples such as water, soil, vegetables, etc. are highly contaminated with metal ions, anions and pesticides. For analysis of these toxic substances from the environmental and biological samples, sophisticated and expensive instruments are being used. The present work deals with the developmentof a simple, faster, sensitive and economicalmethod forthe analysis of toxic substances present in the different samples. Methods: The general methods for synthesis and characterization of metallic (Ag, Au, Cu and graphene) nanoparticles and conductive polymer for its the development of conductive nano-ink, and fabrication of paper substrate by direct deposition and laser, wax, or inkjet printing techniques is reported. Results: Paper-based sensors fabricated with different nanomaterials used as colorimetric, electrochemical and fluorescence-based chemical sensors for the quantitative determinationof pesticides, toxic metal ions in various biological and clinical samples have been comprehensively discussed in this review. Conclusion: The low-cost, rapid, eco-friendly, flexible, portable, paper-based sensors using nanoparticles (NPs) is on-demand for on-site detection of differentchemical constituents present in various environmental, biological and clinical samples.

Characterization of microwave-sintered ceramic composites

1993 ◽  
Vol 51 ◽  
pp. 1136-1137
Author(s):  
X. Zhang ◽  
Y. Pan ◽  
T.T. Meek
Keyword(s):  
Matrix Material ◽  
Maximum Output Power ◽  
Ceramic Matrix Composite ◽  
Ceramic Composites ◽  
Processing Technique ◽  
Structure Characterization ◽  
Alumina Powder ◽  
Maximum Output ◽  
Sintered Ceramic

Industrial microwave heating technology has emerged as a new ceramic processing technique. The unique advantages of fast sintering, high density, and improved materials properties makes it superior in certain respects to other processing methods. This work presents the structure characterization of a microwave sintered ceramic matrix composite.Commercial α-alumina powder A-16 (Alcoa) is chosen as the matrix material, β-silicon carbide whiskers (Third Millennium Technologies, Inc.) are used as the reinforcing element. The green samples consisted of 90 vol% Al2O3 powder and 10 vol% ultrasonically-dispersed SiC whiskers. The powder mixture is blended together, and then uniaxially pressed into a cylindrical pellet under a pressure of 230 MPa, which yields a 52% green density. The sintering experiments are carried out using an industry microwave system (Gober, Model S6F) which generates microwave radiation at 2.45 GHz with a maximum output power of 6 kW. The composites are sintered at two different temperatures (1550°C and 1650°C) with various isothermal processing time intervals ranging from 10 to 20 min.

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