PolyK Technologies
-------Specialized in high voltage dielectric, ferroelectric, and smart materials and applications 
  • High voltage dielectric, ferroelectric, and smart materials and devices.
  • High energy density film capacitors with energy density > 3 J/cc (packaged).
  • High temperature film capacitors with operation temperature > 150 deg C (packaged).
  • High voltage dielectric/ferroelectric test instruments with low cost.
  • Provide test services on high voltage dielectric and ferroelectric materials, including routine high voltage test, dielectric test, and polymer morphology and property test.
  • Provide various dielectric materials and ultrathin dielectric films for R&D: capacitors, printed electronics, flexible electronics, wearable electronics, loudspeaker and microphone membrane, etc.
Representative Publications on polymer dielectric and ferroelectric ......



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                        Ultrathin Free-Standing Dielectric and Ferroelectric Film
                             Piezoelectric PVDF Film with High d33 for R&D
                        PVDF, P(VDF-HFP), P(VDF-CTFE), P(TFE-VDF) Polymers > 20 different grades (compositions & molecular weight)
                        Electroactive Polymers (EAP) P(VDF-TrFE) and Electromechanical Polymers
                        Refurbished High Voltage Trek Amplifiers                    
                        Refurbished Emitech Sputtering Machine
                       Refurbished Temperature & Environment Chambers

Low-Cost Test Instrument and Equipment for High Voltage Dielectric and Ferroelectric
                             Polarization Loop, Ferroelectric, and High Voltage Dielectric Breakdown Test System 
 
                        Capacitor Charge-Discharge   

                        High-Temperature High-Voltage Leakage Current, Resistivity & TSDC & Pyroelectric Test System

                        PolyK $20k Turnkey Dielectric-Temperature-Frequency System
                      
                       High Voltage Low Temperature Test Fixture (Liquid Nitrogen Cooling) 
 
                       Uniaxial Film Stretching Machines for Semicrystalline Polymers (small piece or roll-to-roll)

           M.I.T. Folding Endurance Tester  ASTM D2176 Standard Test Method for Folding Endurance of Paper and Plastics Film
 
   
         
PolyK now offers EAP and EMP polymers based on PVDF (Polyvinylidene fluoride), PVDF copolymers (HFP: hexafluoropropylene, CTFE: cholorotrifluoroethylene; and TrFE VF3: trifluoroethylene, and terpolymers (PVDF-TrFE-CFE, PVDF-TrFE-CTFE, PVDF-TFE-HFP): PolyK is working with global fluoropolymer manufacturers to provide EAP polymer resins, films, stretched films, poled films, metallized films, and devices based on these materials. The PolyK team has more than ten-year expertise in the chemistry/physics/morphology of these specialty polymers, the film production process, and applications in sensors, actuators, capacitors, ferroelectric memory, energy harvesting, pyroelectric, piezoelectric, etc. PolyK can provide you the best material and film selection based on your applications by considering not only the performance of lab-scale samples, but also the cost of future large-scale manufacturing.

        Our test equipment was developed during the past several years and we specialized in high voltage dielectric/ferroelectric test of polymer materials. Our test equipment has been used in several universities around the world and led to high-profile publications:


Flexible high-temperature dielectric materials from polymer nanocomposites, Nature  523, 576–579 (30 July 2015) doi:10.1038/nature14647

http://www.nature.com/nature/journal/v523/n7562/full/nature14647.html

 

Sandwich-structured polymer nanocomposites with high energy density and great charge–discharge efficiency at elevated temperatures, Proceedings of the National Academy of Sciences, 2016; 201603792 DOI: 10.1073/pnas.1603792113

http://www.pnas.org/content/113/36/9995.abstract

 

Toward Wearable Cooling Devices: Highly Flexible Electrocaloric Ba0.67Sr0.33TiO3 Nanowire Arrays, Advanced Materials, 28: 4811–4816. doi:10.1002/adma.201506118

http://onlinelibrary.wiley.com/doi/10.1002/adma.201506118/abstract

 

Bilayer Structure with Ultrahigh Energy/Power Density Using Hybrid Sol–Gel Dielectric and Charge-Blocking Monolayer, Advanced Energy Materials,  2015, 5, 1500767

http://onlinelibrary.wiley.com/doi/10.1002/aenm.201500767/abstract

 

Lead-Free Metamaterials with Enormous Apparent Piezoelectric Response, Advanced Materials, Volume 27, Issue 41, November 4, 2015, Pages 6349–6355

http://onlinelibrary.wiley.com/doi/10.1002/adma.201502562/full

 

Strong Electromechanical Response in Lead Zirconate Titanate Metamaterials, Journal of the American Ceramic Society, Volume 99, Issue 10, October 2016, Pages 3317–3324

http://onlinelibrary.wiley.com/doi/10.1111/jace.14353/full

PolyK Technologies is a high tech company specialized in high voltage dielectric, ferroelectric, smart materials, applications, and related test equipment.

 

13,000 sf chemical lab, film/ capacitor test facilities, pilot production facilities from thin capacitor films to prototype capacitors.

Film Extrusion and Orientation
Our Expertise

Polymers with high dielectric constant for high energy density film capacitors.

Electroactive, electromechanical polymers with strong response to electric field (EAP actuator).

Ferroelectric polymers that respond to pressure (sensor and energy harvesting) or temperature (pyroelectric and IR sensor).

High-temperature capacitor film and film capacitors for power electronics with wide band gap switches (SiC and GaN).

Design of special high voltage and dielectric test equipment controlled by LabView program.

iCAC (industry Center of Advanced Capacitors): Vertically integrated film capacitor industry: polymer compositions, film production, and prototype capacitor fabrication and test.
We are one of very few teams in the world that can truly bridge the gap between material chemistry and capacitor performance using Integrated Computational Material Engineering modeling.


Capacitor Winding
 Our Capabilities

In-house comprehensive characterization tools of polymer compositions and morphologies (DMA, DSC, FTIR).

High voltage test facilities up to 125 kV.

Dielectric test setup from pF to mF and from -150 deg C to >1,000 deg C.

Capacitor test systems for charge-discharge and lifetime under high voltage and various temperatures enabled by high power fast switches.

Pilot scale capacitor film production from 150 mm wide film to 450 mm film with in-line automatic thickness control and temperature > 450 deg C.

Roll-to-roll film stretching machine with width of 650 mm and temperature of 250 deg C. Specially designed for thin film <10 um.
High power 100W CO2 laser (600 mm x 900 mm stage, computer controlled), lathe, saw, drill, roll-n-shear, welding machine, and other tools for fabricating various test fixtures and tools.

High Voltage Dielectric Test Facilities