Surface Morphology of Acrylate/Carbon Nanotubes Nanocomposites on Mild Steel

2015 ◽  
Vol 1109 ◽  
pp. 451-455
Author(s):  
Muhammad Rashid Mahmud ◽  
M.S. Shamsudin ◽  
Muzammil Mat Akhir ◽  
Mohamad Kamal Harun ◽  
Mohamad Rusop ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Morphology ◽  
Mild Steel ◽  
Field Emission ◽  
Steel Surface ◽  
Sol Gel ◽  
Mild Steel Surface ◽  
Scanning Electron

Acrylate/carbon nanotubes nanocomposites were prepared using sol-gel method. Carbon nanotubes with different percentage (0.2%, 0.4%, 0.6%, 0.8% and 1.0%) incorporated into acrylate and deposited on mild steel. Surface of acrylate/carbon nanotubes composites were characterized using by field emission scanning electron microscope (FESEM). Carbon nanotubes uniformly distributed in acrylate observed by FESEM shows increase in percentage of carbon nanotubes blend with acrylate the peak distribution become decreases.

UV-Blocking Properties of Silica/Titania Hybrid Nanocomposites

2007 ◽  
Vol 334-335 ◽  
pp. 1065-1068 ◽  
Author(s):  
Yi He Zhang ◽  
J.H. Xin ◽  
W.A. Daoud ◽  
Xiang Yang Hao
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Silica Nanoparticles ◽  
Field Emission ◽  
Cotton Fabric ◽  
Sol Gel ◽  
Hybrid Nanocomposites ◽  
High Magnification ◽  
Uv Blocking ◽  
Scanning Electron

Silica nanoparticles and silica/titania hybrid nanocomposites were synthesized by sol-gel processes, and padded on cotton fabric. The sizes of these particles ranged from tens to hundreds of nanometers. The morphologies of nanoparticles and hybrid nanocomposites were characterized by high magnification field-emission scanning electron microscope (FESEM). The UV-blocking properties of untreated and treated fabrics with silica/titania nanocomposites were studied and discussed.

scholarly journals Analisis Struktur Kristal dan Sifat Kemagnetan Material Komposit Perovskite Manganit Nd0,6Sr0,4MnO3/ZnO

2020 ◽  
Vol 3 (1) ◽  
pp. 1-8
Author(s):  
Muhammad Umar Faruqi ◽  
Arif Tjahjono ◽  
Sitti Ahmiatri Saptari
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Field Emission ◽  
Sol Gel ◽  
Vibrating Sample Magnetometer ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Characterization Test ◽  
Scanning Electron

AbstrakPerovskite manganit merupakan salah satu rekayasa material yang dapat menghasilkan perubahan fenomena fisika. Telah berhasil dibuat material berbasis perovskite manganit Nd0,6Sr0,4MnO3 menggunakan metode sol-gel¬ dan dikompositkan dengan ZnO (Nd0,6Sr0,4MnO3)1-x/(ZnO)x (x = 0; 0,3; 0,5; 0,7). Hasil pengujian X-Ray Diffraction menunjukkan sampel Nd0,6Sr0,4MnO3 berstruktur tunggal ortorombik dan sampel ZnO pada (Nd0,6Sr0,4MnO3)0,5/(ZnO)0,5 berstruktur heksagonal tunggal. Hasil pengujian Field Emission Scanning Electron Microscope menunjukkan sampel telah homogen dengan rata-rata ukuran butir 0,188 μm. Hasil pengujian Vibrating Sample Magnetometer menunjukkan sampel (Nd0,6Sr0,4MnO3)0,5/(ZnO)0,5 bersifat paramagnetik dan mengalami penurunan sifat magnetik juga suseptibilitas seiring dengan penambahan konsentrasi material ZnO. AbstractPerovskite manganite is one of the manipulation materials that can produce changes in physical phenomena. Perovskite material Nd0,6Sr0,4MnO3 has been made with the sol-gel method and then composites with ZnO (Nd0.6Sr0.4MnO3)1-x/(ZnO)x (x = 0; 0.3; 0.5, 0, 7). The results of the X-Ray Diffraction characterization test showed samples of Nd0,6Sr0,4MnO3 and ZnO each with a single orthorhombic phase with a Pnma space group and a single hexagonal with a P63mc space group. The results of the Field Emission Scanning Electron Microscope characterization test showed that the samples were homogeneous with an average grain size of 0,188 μm. Vibrating Sample Magnetometer characterization test results show composite material (Nd0,6Sr0,4MnO3)1-x/(ZnO)x are paramagnetic and the increasing composition of ZnO material decreases the magnetization and susceptibility value of sample 

scholarly journals Analisis Fasa, Struktur Kristal dan Sifat Kemagnetan Material Komposit Berbasis Nd0,6Sr0,4MnO3 / Fe2O3

2020 ◽  
Vol 3 (2) ◽  
pp. 114-122
Author(s):  
Mujadid Al-Rabi ◽  
Arif Tjahjono ◽  
Sitti Ahmiatri Saptari
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Field Emission ◽  
Sol Gel ◽  
Vibrating Sample Magnetometer ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Scanning Electron

Pada penelitian ini dipelajari rekayasa struktur material komposit berbasis neodymium manganit, yang dimulai dengan mensintesis material Nd0,6Sr0,4MnO3 (NSMO) dengan menggunakan metode sol-gel, lalu dilanjutkan dengan sintesis material komposit (Nd0,6Sr0,4MnO3)1-x/(Fe2O3)x (x= 0; 0,3; 0,5 dan 0,7). Sampel dikarakterisasi dengan menggunakan XRD (X-Ray Diffraction) menunjukkan bahwa sampel NSMO memiliki struktur kristal orthorombik dengan space group P n m a, pengkompositan dengan Fe2O3 tidak menyebabkan perubahan struktur tetapi muncul fasa lain yang ditandai dengan adanya puncak difraksi milik Fe2O3. Karakterisasi FESEM (Field Emission Scanning Electron Microscope) menunjukkan persebaran butir yang merata dengan ukuran butir rata-rata 0.186 μm. Karakterisasi VSM (Vibrating Sample Magnetometer) pada temperatur ruang (298 K) dengan medan magnet 5 T, menunjukkan material komposit NSMO / Fe2O3 bersifat paramagnetik dan nilai magnetisasi serta susceptibilitas sampel semakin menurun seiring dengan penambahan konsentrasi Fe2O3.

Field Emission of Individual Carbon Nanotubes in the Scanning Electron Microscope

2002 ◽  
Vol 89 (19) ◽  
Author(s):  
Jean-Marc Bonard ◽  
Kenneth A. Dean ◽  
Bernard F. Coll ◽  
Christian Klinke
Keyword(s):  
Carbon Nanotubes ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Field Emission ◽  
Scanning Electron

Field Emission SEM Equipped With Noise Compensator

1973 ◽  
Vol 31 ◽  
pp. 302-303
Author(s):  
S. Saito ◽  
H. Todokoro ◽  
S. Nomura ◽  
T. Komoda
Keyword(s):  
Electron Microscope ◽  
High Resolution ◽  
Scanning Electron Microscope ◽  
Field Emission ◽  
Low Contrast ◽  
Probe Current ◽  
High Resolution Images ◽  
Scanning Electron

Field emission scanning electron microscope (FESEM) features extremely high resolution images, and offers many valuable information. But, for a specimen which gives low contrast images, lateral stripes appear in images. These stripes are resulted from signal fluctuations caused by probe current noises. In order to obtain good images without stripes, the fluctuations should be less than 1%, especially for low contrast images. For this purpose, the authors realized a noise compensator, and applied this to the FESEM.Fig. 1 shows an outline of FESEM equipped with a noise compensator. Two apertures are provided gust under the field emission gun.

Comparison of freeze-fractured yeast replicas using conventional TEM and low-voltage field-emission SEM

1989 ◽  
Vol 47 ◽  
pp. 74-75
Author(s):  
William P. Wergin ◽  
Eric F. Erbe ◽  
Terrence W. Reilly
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Field Emission ◽  
Low Voltage ◽  
Objective Lens ◽  
Specimen Preparation ◽  
Lens System ◽  
Air Drying ◽  
Preparation Techniques ◽  
Scanning Electron

Although the first commercial scanning electron microscope (SEM) was introduced in 1965, the limited resolution and the lack of preparation techniques initially confined biological observations to relatively low magnification images showing anatomical surface features of samples that withstood the artifacts associated with air drying. As the design of instrumentation improved and the techniques for specimen preparation developed, the SEM allowed biologists to gain additional insights not only on the external features of samples but on the internal structure of tissues as well. By 1985, the resolution of the conventional SEM had reached 3 - 5 nm; however most biological samples still required a conductive coating of 20 - 30 nm that prevented investigators from approaching the level of information that was available with various TEM techniques. Recently, a new SEM design combined a condenser-objective lens system with a field emission electron source.

PENGGUNAAN TiO2 PARTIKEL NANO HASIL SINTESIS BERBASIS AIR MENGGUNAKAN METODA SOL-GEL PADA BAHAN KAPAS SEBAGAI APLIKASI UNTUK TEKSTIL ANTI UV

Arena Tekstil ◽  
2013 ◽  
Vol 28 (1) ◽  
Author(s):  
Maya Komalasari ◽  
Bambang Sunendar
Keyword(s):  
Fourier Transform ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Sol Gel ◽  
Crosslinking Agent ◽  
X Ray Diffraction ◽  
Nano Tio2 ◽  
X Ray ◽  
Infra Red ◽  
Scanning Electron

Partikel nano TiO2 berbasis air dengan pH basa telah berhasil disintesis dengan menggunakan metode sol-gel dan diimobilisasi pada kain kapas dengan menggunakan kitosan sebagai zat pengikat silang. Sintesis dilakukan  dengan prekursor TiCl4 pada konsentrasi 0,3 M, 0,5 M dan 1 M, dan menggunakan templat kanji dengan proses kalsinasi pada suhu 500˚C selama 2 jam. Partikel nano TiO2 diaplikasikan ke kain kapas dengan metoda pad-dry-cure dan menggunakan kitosan sebagai crosslinking agent. Berdasarkan hasil Scanning Electron Microscope (SEM),diketahui bahwa morfologi partikel TiO2 berbentuk spherical dengan ukuran nano (kurang dari 100 nm). Karakterisasi X-Ray Diffraction (XRD) menunjukkan adanya tiga tipe struktur kristal utama, yaitu (100), (101) dan (102) dengan fasa kristal yang terbentuk adalah anatase dan rutile. Pada karakterisasi menggunakan SEM terhadap serbuk dari TiO2 yang telah diaplikasikan ke permukaan kain kapas, terlihat adanya imobilisasi partikel nano TiO2 melalui ikatan hidrogen silang dengan kitosan pada kain kapas. Hasil analisa tersebut kemudian dikonfirmasi dengan FTIR (Fourier Transform Infra Red) yang hasilnya memperlihatkan puncak serapan pada bilangan gelombang 3495 cm-1, 2546 cm-1, dan 511 cm-1,  yang masing-masing diasumsikan sebagai adanya vibrasi gugus fungsi O-H, N-H dan Ti-O-Ti. Hasil SEM menunjukkan pula bahwa kristal nano yang terbentuk diantaranya adalah fasa rutile , yang berdasarkan literatur terbukti dapatberfungsi sebagai anti UV.

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