scholarly journals Fabrication and evaluation of controllable deposition distance for aligned pattern by multi-nozzle near-field electrospinning

AIP Advances ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 075111 ◽  
Author(s):  
Zhifeng Wang ◽  
Xindu Chen ◽  
Jiarong Zhang ◽  
Ya-Ju Lin ◽  
Kuan Li ◽  
...  
Keyword(s):  
Near Field ◽  
Deposition Distance

scholarly journals Research on Multinozzle Near-Field Electrospinning Patterned Deposition

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Han Wang ◽  
Shenneng Huang ◽  
Feng Liang ◽  
Peixuan Wu ◽  
Minhao Li ◽  
...  
Keyword(s):  
Near Field ◽  
Theoretical Derivation ◽  
Coulomb’S Law ◽  
Increase Productivity ◽  
Working Distance ◽  
Coulomb's Law ◽  
Deposition Distance

Multinozzle electrospinning systems are designed to increase productivity, while near-field electrospinning (NFES) systems are designed to deposit solid nanofibers in a direct, continuous, and controllable manner. In this paper, several multinozzle NFES setups are tested. The experiment reveals that the deposition distance becomes larger when working distance and needle spacing increase, and the influence of voltage is relatively weaker. The deposition of double nozzle NFES has been studied with Coulomb’s law and theoretical derivation has been verified by the experimental conclusion. The experiment result and theoretical derivation are helpful to get different distance of direct-written fibers by adjusting working distance or needle spacing to change distance of fibers largely and adjusting voltage to change distance slowly. Through these efforts, it is convenient to adjust the distance of straight fibers in multinozzle system.

Research on Deposition Characteristics of the Double-Nozzle in Near-Field Electrospinning

2016 ◽  
Vol 679 ◽  
pp. 59-62 ◽  
Author(s):  
Zhi Feng Wang ◽  
Xin Du Chen ◽  
Shen Neng Huang ◽  
Fei Yu Fang ◽  
Han Wang
Keyword(s):  
Electric Field ◽  
Field Intensity ◽  
Manufacturing Process ◽  
Electric Field Intensity ◽  
Near Field ◽  
Force Distribution ◽  
Needle Length ◽  
Nozzle Length ◽  
Deposition Distance

With the double-nozzle NFES process, the uncertainty is more suitable to investigate than the multi-nozzle NFES and also meet higher liquid throughput requirement than conventional electrospinning. Moreover, the key point is to control the deposition characteristics of double-nozzle NFES under the interaction of the nozzles. This paper simulates the change in electric field intensity with the change of nozzle length and voltage. The experiment shows that the deposition distance becomes smaller when needle length increases, however, the influence of voltage is opposite in certain range. According to the study above, the results could be the guidance of the multi-nozzles NEFS in manufacturing process, and also can illustrate the force distribution of the jet with further modification.

scholarly journals Controllable deposition distance of aligned pattern via dual-nozzle near-field electrospinning

AIP Advances ◽  
2017 ◽  
Vol 7 (3) ◽  
pp. 035310 ◽  
Author(s):  
Zhifeng Wang ◽  
Xindu Chen ◽  
Jun Zeng ◽  
Feng Liang ◽  
Peixuan Wu ◽  
...  
Keyword(s):  
Near Field ◽  
Deposition Distance

Near-field scanning optical microscopy

1986 ◽  
Vol 44 ◽  
pp. 642-643
Author(s):  
E. Betzig ◽  
A. Harootunian ◽  
M. Isaacson ◽  
A. Lewis
Keyword(s):  
Near Field ◽  
Optical Microscope ◽  
Visible Radiation ◽  
Field Methods ◽  
Optical Elements ◽  
Optical Region ◽  
Order Of Magnitude ◽  
Nondestructive Imaging ◽  
Scanning Optical Microscopy ◽  
Near Field Scanning

In general, conventional methods of optical imaging are limited in spatial resolution by either the wavelength of the radiation used or by the aberrations of the optical elements. This is true whether one uses a scanning probe or a fixed beam method. The reason for the wavelength limit of resolution is due to the far field methods of producing or detecting the radiation. If one resorts to restricting our probes to the near field optical region, then the possibility exists of obtaining spatial resolutions more than an order of magnitude smaller than the optical wavelength of the radiation used. In this paper, we will describe the principles underlying such "near field" imaging and present some preliminary results from a near field scanning optical microscope (NS0M) that uses visible radiation and is capable of resolutions comparable to an SEM. The advantage of such a technique is the possibility of completely nondestructive imaging in air at spatial resolutions of about 50nm.

Principles of Planar Near-Field Antenna Measurements

2007 ◽  
Author(s):  
Stuart Gregson ◽  
John McCormick ◽  
Clive Parini
Keyword(s):  
Near Field ◽  
Antenna Measurements

Immobilization of Radionuclides on Iron Canister Material at Simulated Near-field Conditions

2008 ◽  
Author(s):  
Daqing Cui ◽  
Ylva Ranebo ◽  
Jeanett Low ◽  
Vincenzo Rondinella ◽  
Jinshan Pan ◽  
...  
Keyword(s):  
Near Field ◽  
Field Conditions

Magnetic Tag Antenna for UHF Near-field and Far-Field RFID Applications

2015 ◽  
Vol 5 (2) ◽  
pp. 119
Author(s):  
Mondher Dhaouadi ◽  
M. Mabrouk ◽  
T. Vuong ◽  
A. Ghazel
Keyword(s):  
Near Field ◽  
Far Field ◽  
Rfid Applications
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