Prof. Dibakar Das
Research Group
Laboratory of Functional Ceramic Materials
Exploring the Wonders of Science
RESEARCH FUNDS GRANTED
Project Title:
Development of Lead-free Piezoceramics for Sensor and Actuator Applications
Funding Agency:
University Grant Commission (UGC) under Universities with Potential of Excellence Phase - II (UPE-Phase II), Govt. of India (Sanction No.: UH/UPE-2/31/2016
Duration: March 2016- 2017
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Project Title:
Development of Lead-free Piezoceramics for Sensor and Actuator Applications
Funding Agency:
University Grant Commission (UGC) under Universities with Potential of Excellence Phase - II (UPE-Phase II), Govt. of India (Sanction No.: UH/UPE-2/31/2016
Duration: March 2016- 2017
Add a News Article with a short summary and a link. You can also add a video for extra engagement. Be detailed and thorough to interest your readers, and include links to the original story online.
Project Title:
Development of Lead-free Piezoceramics for Sensor and Actuator Applications
Funding Agency:
University Grant Commission (UGC) under Universities with Potential of Excellence Phase - II (UPE-Phase II), Govt. of India (Sanction No.: UH/UPE-2/31/2016
Duration: March 2016- 2017
Add a News Article with a short summary and a link. You can also add a video for extra engagement. Be detailed and thorough to interest your readers, and include links to the original story online.
Project Title:
Development of Lead-free Piezoceramics for Sensor and Actuator Applications
Funding Agency:
University Grant Commission (UGC) under Universities with Potential of Excellence Phase - II (UPE-Phase II), Govt. of India (Sanction No.: UH/UPE-2/31/2016
Duration: March 2016- 2017
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Project Title:
Development of an Ultrasoft Chemical Mechanical Planarization (USCMP) Technology for Single Crystal CdZnTe/HgCdTe (CZT/MCT) Polishing for IR Sensor
Funding Agency:
Solid State Physics Laboratory (SSPL) Delhi, Defense Research and Development Organization (DRDO), Government of India (Sanction No.: 1115/CARS-59/TS/SPL/17)
Budget: Grant: Rs. 9,50,820
Duration: July 2017- 2020
The current proposal aims to develop a novel and cost effective ultra-soft (low pressure) Chemical Mechanical Planarization (USCMP) technology for single crystal CdZnTe (CZT) and HgCdTe (MCT) polishing with ~ 10Å rms surface roughness over 10µm×10µm area.
Project Title:
Development of Chemical Mechanical Planarization (CMP) Technology for Single Crystal Silicon Carbide (SiC) Bulk Substrate
Funding Agency:
Solid State Physics Laboratory (SSPL) Delhi, Defense Research and Development Organization (DRDO), Government of India (Sanction No.: 1115/CARS-50/TS/SPL/16)
Budget: Grant: Rs. 38,50,000
Duration: March 2016- 2019
The proposal aims to develop a novel and cost effective Chemical Mechanical Planarization (CMP) technology for single crystal SiC bulk substrate with 1 micrometer/hr material removal rate and <10 Å rms surface roughness over 10 µm × 10 µm for growing high quality SiC surface for further expitaxial growth of the same materials.
Project Title:
Development of Lead-free Piezoceramics for Sensor and Actuator Applications
Funding Agency:
University Grant Commission (UGC) under Universities with Potential of Excellence Phase - II (UPE-Phase II), Govt. of India (Sanction No.: UH/UPE-2/31/2016)
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Budget: Grant: Rs. 11,80,000
Duration: March 2016- May 2017
This project mainly aims to investigate the synthesis and characterization of lead free piezoelectric ceramics, BCZT by solid state synthesis and to study the aging behavior of BCZT on piezoelectric and structural properties.
Project Title:
Surface preparation of semi-polar (11-22) and non-polar (11-20) III-V nitride epilayers by chemical mechanical planarization (CMP) process
Funding Agency:
Board of Research in Nuclear Sciences (BRNS), Department of Atomic Energy (DAE), Government of India (Sanction No.: 34/14/43/2014-BRNS with ATC)
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Budget: Grant: Rs. 18,20,300
Duration: January 2015- March 2017
The proposal aims to develop cost effective Abrasive Free Chemical Mechanical Planarization (AFCMP) technology for semi-polar and non-polar GaN/AlN/AlGaN epilayer with atomically flat defect free surfaces ( ~5Å rms surface roughness over a scan area of 5 µm × 5 µm). This planarized surface will be used a substrate for further overgrowth of device epilayer of GaN.
Project Title:
Development of Microwave Window Sections for Fusion System (Phase II)
Funding Agency:
Board of Research in Fusion Science and Technology (BRFST), Department of Atomic Energy (DAE), Govt. of India (Sanction No.: BRFST/NFP/2012/AUG/N/11)
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Budget: Grant: Rs. 44,40,000
Duration: August 2012- September 2015
Radio frequency (RF) windows, used in the transmission line of the Tokamak reactor, are one of the critical components limiting the amount of power that can be coupled with the plasma current into the reactor. The window failures are mostly caused by the material imperfections. Therefore the use of high quality hermetic metallized ceramics is an important and essential prerequisite for the high power Tokamak reactor. The most common material used for RF windows is high purity polycrystalline alumina; however, its dielectric constant is less, which adversely affects the high power RF transmission. The aim of this project was to develop an alternate MW dielectric ceramics with high dielectric constant ~ 30, quality factor (QXf) ~ 1,50,000, low loss, and high thermal conductivity. The brazing of this MW ceramics with Ti metal has also been investigated.
Project Title:
Development of a Novel Multiferroic for Ultrasensitive Magnetic Field Sensor
Funding Agency:
Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Govt. of India (Sanction No.: SR/S3/ME/0012/2011)
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Budget: Grant: Rs. 41,12,596
Duration: June 2012- July 2015
The proposal aims to develop a suitable magnetic and piezoelectric phase with very high magnetostriction (λ) and piezoelectric charge coefficient (d 33 ) respectively to fabricate a multiferroic magnetoelectric (ME) bulk composite with very high magnetoelectric voltage coefficient (α) for ultrasensitive magnetic field sensor application. Appropriate wet chemical techniques will be employed to synthesize the ferroic phases. The ferroic phases will be optimized for their magnetostrictive and electrostrictive properties. ME bulk composites will be made using the phase pure ferroic materials and proper synthetic strategy to create core-shell structure. Microstructural engineering will be investigated using proper heat treatment schedule of the compacted ME bulk composite. Different advanced sintering techniques will be adopted to develop fine grained microstructure of the bulk ME composite. The sintered pellets of the composites with varying piezoelectric and magnetic phases will be characterized for different piezoelectric and magnetic properties including dynamic magnetoelectric voltage coefficient (α).
Project Title:
Development of a Nanoparticle Assisted Novel Chemical Mechanical Planarization (CMP) Technology for Single Crystal Gallium Nitride (GaN) Substrate
Funding Agency:
Science and Engineering Research Council (SERC), Department of Science and Technology (DST), Govt. of India (Sanction No.: SR/S2/CMP-0009/2011)
Budget: Grant: Rs. 52,70,000
Duration: February 2012- March 2015
The proposal aims to develop a nanoparticle assisted novel single step and cost effective Chemical Mechanical Planarization (CMP) technology for single crystal GaN wafer with 1 µm /hr material removal rate and ~5Å rms surface roughness. The project mainly aims to develop a strategy for achieving high material removal rate from the c-plane of GaN and smooth surface finish. This project aims to use the conventional CMP process, where the CMP slurry contains abrasive particle in it.
Project Title:
Study of Functional Piezoelectric Ceramics
Funding Agency:
University Grant Commission (UGC) under Universities with Potential of Excellence Phase - II (UPE-Phase II), Govt. of India (Sanction No.: UH/UGC/UPE PHASE-2/INTERFACE STUDIES/ RESEARCH PROJECTS/R-4)
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Budget: Grant: Rs. 3,00,000
Duration: April 2012- March 2013
This project mainly aims to investigate the synthesis and characterization of lead free piezoelectric ceramics, BCT-BZT. The project aims to synthesize the piezoelectric ceramics using suitable wet chemical methods and to develop processing protocol to achieve high density sintered ceramics. The sintered ceramics have been characterized for its crystal structure, physical and piezoelectric properties.
Project Title:
Development of Microwave Window Sections for Fusion System
Funding Agency:
Board of Research in Fusion Science and Technology (BRFST), Department of Atomic Energy (DAE), Govt. of India (Sanction No.: IPR/NFP/2011/AUG/N/05)
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Budget: Grant: Rs. 21,60,000
Duration: September 2011- August 2012
See thee Development of Microwave Window Sections for Fusion System (Phase II) project mentioned above.