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LHM chracterization (Field Average method)
MMM(Metamaterial)construct with an periodical unit cell has an individual local field (microscopic field)generated in response to an incident field. The microscopic field can be transformed into macroscopic field that response to the triggered field, with an used of the field summation method. The macroscopic field description then allow the appropriate effective permittivity and permeability to be assigned.

The method first organize the spatial boundary of an unit cell, say into 2d length side cubic. The unti cell boundary is chosen no to crosse any abrupt field change section (the effect of crossing and explanation is no well-explaned yet), and the Maxwell's curl solution is solved at each cubic faces. (Note : Maxwell's curl equation gives an closed loop line integral, has the curl field in rigth-hand rules direction). Two cubic are constructred with the inner most corner at (-b,-b,-b)for the curl E while (0,0,0) for the curl H cubic, which mean both cubic is shifted by dimension(d,d,d).Then the "avarage field" appear as an point at face centre and at line cross the points.

Next an constitutive relationhsip between the average field is defined. An plane wave now is assumed to propagating and has the field summation macroscopic field defined, thus allow an correction factor to be defined to give the correct permittivity and permeability value, which appear as an sinc2 term. (To be continue)

References:
Homogenization of metamaterials by field averaging
Jorunal of Optics, vol 23, N0 3

The interested studying area varies from time to time according to what has been working on. Research in integrated circuit on the SOI modelling is my undergraduate thesis subject. Love circuit theory, control system, signal processing. While the interest has been included an vaccum tube analysis during the phd studying, however more knownledge can be learn from the subject. After graduation from the phd studying, then join lancaster university as an research associate, with an current research everything on Metamaterial studying, which is one of my new interesting now. A large branch of sciences on LHM for sure would booste my knownledge future. More analysis is involving an investigation with an used of Maxwell's equation directly. A lot of software will be learned, including HFSS, COMSOL, Vorpal, Microwave studio, mafia, Magic and so one. Lancaster is an very high standard of the microwave research institution in cooperation with crockcroft institute in development of accelerator.

Alot of sciences is involved in the accelerator design as well. I believe after the three years contract in lancaster I will be an expectise I, alot of area.

Summary of knownledge that maybe gained within this three years including

-Analytical Maxwell's solution
-Vaccum tube design both in low and high power
-Left-handed material
-Accelerator
-klystron
-Photonic bandgap structure

Software
-HFSS
-COMSOL
-Microwave Studio with particle studio
-MAGIC
-Vorpal
-Concerto

Assit package
-Mathcad
-Matlab
-Matematical
-Simulink

Eduacation qualification reward and working experiences

Research Associate (University of Lancaster)

PhD in electrical and electronics engineering (University of Liverpool)
ORS award

Pickup University Undergraduate scholarship

BEng (1st honous) in electronics and electrical Engineering (University of Liverpool-UK)

INTI college Bursary Scheme

Equipment and QC technician (G-Orient)
Equipment and facility technician (Dyna Plastics)
Maintanance Technician (Western Digital)

Diploma in electronics and electrical engineering (INTI-MALAYSIA)