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3D Printing Innovations in Polymeric Porous and Patterned Architecture

Advanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil, Sri Vaishnavi Thummalapalli, Clarissa Westover, Arunachalam Ramanathan, M. Taylor Sobzcak, Roumika Patil, Qixuan Xiang, Tiantian Li, Sui Yang, Timothy E. Long, Hongyue Sun, Xianqiao Wang, Yang Liu, Kenan Song   +13 more
wiley   +1 more source

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Space charge measurement techniques and space charge in polyethylene

IEEE Transactions on Dielectrics and Electrical Insulation, 1994
Recently, several new techniques such as LIPP, PIPS, PEA and TP methods have been developed to measure directly the space charge distributions in insulating polymers. Many papers have been published on space charge in insulating materials. In this paper, the space charge measurement techniques and space charge in polyethylene are reviewed.
exaly   +2 more sources

Space charge effects in a kinestatic charge detector

Physics in Medicine and Biology, 1991
The effects of space charge in a kinestatic charge detector (KCD) were examined using computer solutions to Poisson's equation. The KCD is a strip-beam parallel-plate drift chamber used for digital radiography. It was assumed that there is negligible electron attachment, i.e. there are no negative ions formed.
D J, Wagenaar, F A, DiBianca, C R, Tenney, D, Fritsch   +3 more
openaire   +2 more sources

The charge‐tube method for space‐charge simulations

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 1999
The charge‐tube method is an accurate way of assigning the space‐charge of a beam in computational simulations of charged particle systems. The method is described and is compared with the traditional charge‐cell method.
Read, F. H., Chalupka, A., Bowring, N. J.   +2 more
openaire   +1 more source

LOCALIZED SPACE-CHARGE WAVES IN SPACE-CHARGE DOMINATED BEAMS

International Journal of Modern Physics B, 1995
The physics of space-charge waves in space-charge dominated beams is presented. This includes the generation and propagation of such waves in coasting beams, and the end effect on space-charge waves in bunched beams. It is shown for the first time in experiments that a single space-charge wave can be generated, that the geometry factor g can be ...
J.G. WANG, M. REISER
openaire   +1 more source

Space-charge relaxation in perovskites

Physical Review B, 1994
We report a dielectric anomaly in several perovskites at intermediate frequencies 10\ensuremath{\le}f\ensuremath{\le}${10}^{7}$ Hz in the temperature range 400 \ifmmode^\circ\else\textdegree\fi{}C \ensuremath{\le}T\ensuremath{\le}800 \ifmmode^\circ\else\textdegree\fi{}C.
, Bidault, , Goux, , Kchikech, , Belkaoumi, , Maglione   +4 more
openaire   +2 more sources

Space Charge and Charge Transport in Polypropylene

2005 12th International Symposium on Electrets, 2006
Space charge distributions in various polypropylene (PP) films were measured with the PEA method. Specimens were 100 /spl mu/m-thick films of homo-PP and PP-copolymers including -3 wt% ethylene which were polymerized using metallocene or Ziegler catalysts.
T. Mizutani, E. Nakane, K. Kaneko, M. Ishioka, H. Takino   +4 more
openaire   +1 more source

Charge decay and space charge in corona-charged LDPE

Proceedings. 11th International Symposium on Electrets, 2003
The surface charge decay and space charge distribution in corona-charged low-density polyethylene (LDPE) were investigated. The space charge distribution was measured at 30/spl deg/C with the pulsed electro-acoustic (PEA) method, where a corona charged specimen was set between a semiconductive electrode and an Al electrode.
T. Mizutani, Y. Taniguchi, M. Ishioka
openaire   +1 more source

Space Charge Compensation with DCI

1980
Extensive tests of space charge compensation, at the energy of.8 GeV, in similar conditions to those of the e+e− configuration are reported. Stability regions, smaller in size than those observed in that configuration, are found to decrease rapidly with current. Up to the limit, the beam cross-section stays constant.
Le Duff, J., Level, M.P., Marin, P.C., Sommer, E.M., Zyngier, H.   +4 more
openaire   +2 more sources