Effect of Thicknesses on the Optical and Electrical Properties of Ag Films on PET Substrates

2009 ◽  
Vol 79-82 ◽  
pp. 655-658 ◽  
Author(s):  
Jing Lv ◽  
Sheng Ni Zhang
Keyword(s):  
Atomic Force Microscopy ◽  
Electrical Properties ◽  
Critical Thickness ◽  
Thermal Evaporation ◽  
Optical And Electrical Properties ◽  
Force Microscopy ◽  
Glass Substrates ◽  
Atomic Force ◽  
Bulk Silver ◽  
Ag Film

A series of Ag films with different thicknesses were prepared on polyethylene terephthalate (PET) substrates under identical conditions by thermal evaporation. The effect of the thickness on the optical and electrical properties of the films was studied. The morphology of the samples was investigated by atomic force microscopy (AFM). The optical and electrical properties were measured by spectrophotometer and four-point probe method, respectively. The experimental results show that the reflectance increases, while transmittance and resistivity decrease with the increase of the thickness. There exists a critical thickness of the film and it is 75 nm in this experiment. The optical and electrical properties of Ag films on PET substrates with thickness larger than critical thickness, are close to those of the conventional bulk silver. The resistivity of the 150-nm film is 3.0±0.2 μΩ•cm, which is lower than that of the 250-nm Ag film grown on BK-7 glass substrates.

ATOMIC FORCE MICROSCOPY AND XRD ANALYSIS OF SILVER FILMS DEPOSITED BY THERMAL EVAPORATION

2006 ◽  
Vol 20 (02) ◽  
pp. 217-231 ◽  
Author(s):  
MUHAMMAD MAQBOOL ◽  
TAHIRZEB KHAN
Keyword(s):  
Atomic Force Microscopy ◽  
Grain Size ◽  
Surface Characterization ◽  
Room Temperature ◽  
Thermal Evaporation ◽  
Xrd Analysis ◽  
Force Microscopy ◽  
Atomic Force ◽  
Average Grain Size ◽  
20 Nm

Thin films of pure silver were deposited on glass substrate by thermal evaporation process at room temperature. Surface characterization of the films was performed using X-ray diffraction (XRD) and atomic force microscopy (AFM). Thickness of the films varied between 20 nm and 72.8 nm. XRD analysis provided a sharp peak at 38.75° from silver. These results indicated that the films deposited on glass substrates at room temperature are crystalline. Three-dimension and top view pictures of the films were obtained by AFM to study the grain size and its dependency on various factors. Average grain size increased with the thickness of the deposited films. A minimum grain size of 8 nm was obtained for 20 nm thick films, reaching 41.9 nm when the film size reaches 60 nm. Grain size was calculated from the information provided by the XRD spectrum and averaging method. We could not find any sequential variation in the grain size with the growth rate.

Characterization of the Electrical Properties of Nickel-Based CMSX-4 Super-alloys Using Atomic Force Microscopy (AFM)

2004 ◽  
Vol 10 (S02) ◽  
pp. 1102-1103
Author(s):  
Guangchun Cui ◽  
Rosario A Gerhardt
Keyword(s):  
Atomic Force Microscopy ◽  
Electrical Properties ◽  
Force Microscopy ◽  
Atomic Force

Extended abstract of a paper presented at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, August 1–5, 2004.

Nanoscale surface electrical properties of zinc oxide films investigated by conducting atomic force microscopy

2007 ◽  
Vol 71 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Chang-Feng Yu ◽  
Sy-Hann Chen ◽  
Wen-Jia Xie ◽  
Yung-Shao Lin ◽  
Cheng-Yu Shen ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Zinc Oxide ◽  
Electrical Properties ◽  
Oxide Films ◽  
Force Microscopy ◽  
Zinc Oxide Films ◽  
Atomic Force

scholarly journals Modulation of the contractility of micropatterned myocardial cells with nanoscale forces using atomic force microscopy

2016 ◽  
Vol 3 ◽  
pp. 184954351667534 ◽  
Author(s):  
Neerajha Nagarajan ◽  
Varun Vyas ◽  
Bryan D Huey ◽  
Pinar Zorlutuna
Keyword(s):  
Atomic Force Microscopy ◽  
Single Cells ◽  
Neonatal Rat ◽  
Contraction Rate ◽  
Rat Cardiomyocytes ◽  
Force Microscopy ◽  
Glass Substrates ◽  
Atomic Force ◽  
Lower Magnitude ◽  
Cyclic Stimulation

The ability to modulate cardiomyocyte contractility is important for bioengineering applications ranging from heart disease treatments to biorobotics. In this study, we examined the changes in contraction frequency of neonatal rat cardiomyocytes upon single-cell-level nanoscale mechanical stimulation using atomic force microscopy. To measure the response of same density of cells, they were micropatterned into micropatches of fixed geometry. To examine the effect of the substrate stiffness on the behavior of cells, they were cultured on a stiffer and a softer surface, glass and poly (dimethylsiloxane), respectively. Upon periodic cyclic stimulation of 300 nN at 5 Hz, a significant reduction in the rate of synchronous contraction of the cell patches on poly(dimethylsiloxane) substrates was observed with respect to their spontaneous beat rate, while the cell patches on glass substrates maintained or increased their contraction rate after the stimulation. On the other hand, single cells mostly maintained their contraction rate and could only withstand a lower magnitude of forces compared to micropatterned cell patches. This study reveals that the contraction behavior of cardiomyocytes can be modulated mechanically through cyclic nanomechanical stimulation, and the degree and mode of this modulation depend on the cell connectivity and substrate mechanical properties.

Quantitative Evaluation of SERS-Active Ag Film Nanostructure by Atomic Force Microscopy

1996 ◽  
Vol 68 (3) ◽  
pp. 473-480 ◽  
Author(s):  
Shane E. Roark ◽  
David J. Semin ◽  
Kathy L. Rowlen
Keyword(s):  
Atomic Force Microscopy ◽  
Quantitative Evaluation ◽  
Force Microscopy ◽  
Atomic Force ◽  
Ag Film
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