A5065529545- Graphene research and applications
- 2D Materials and Applications
- Additive Manufacturing and 3D Printing Technologies
- MXene and MAX Phase Materials
- Carbon Nanotubes in Composites
- Force Microscopy Techniques and Applications
- Integrated Circuits and Semiconductor Failure Analysis
- 3D Printing in Biomedical Research
- Nanofabrication and Lithography Techniques
- Bone Tissue Engineering Materials
- Mechanical and Optical Resonators
- Boron and Carbon Nanomaterials Research
- Nanotechnology research and applications
- Advanced Cellulose Research Studies
- Thermal properties of materials
- Petroleum Processing and Analysis
- Clay minerals and soil interactions
- High-Temperature Coating Behaviors
- Enhanced Oil Recovery Techniques
- Pickering emulsions and particle stabilization
- Advanced Sensor and Energy Harvesting Materials
- High Entropy Alloys Studies
- Polymer Nanocomposite Synthesis and Irradiation
- Polymer Surface Interaction Studies
- Fire effects on concrete materials
Rice University
2020-2024
George Washington University
2018-2021
Bangladesh University of Engineering and Technology
2018
Natural wood has served as a foundational material for buildings, furniture, and architectural structures millennia, typically shaped through subtractive manufacturing techniques. However, this process often generates substantial waste, leading to inefficiency increased production costs. A potential opportunity arises if complex can be created additive processes. Here, we demonstrate an additive-free, water-based ink made of lignin cellulose, the primary building blocks natural wood, that...
Two-dimensional materials such as graphene and molybdenum disulfide are often subject to out-of-plane deformation, but its influence on electronic nanomechanical properties remains poorly understood. These physical distortions modulate important which can be studied by atomic force microscopy Raman spectroscopic mapping. Herein, we have identified investigated different geometries of line defects in standing collapsed wrinkles, folded grain boundaries that exhibit distinct strain doping. In...
The refining process of petroleum crude oil generates asphaltenes, which poses complicated problems during the production cleaner fuels. Following refining, asphaltenes are typically combusted for reuse as fuel or discarded into tailing ponds and landfills, leading to economic environmental disruption. Here, we show that low-value can be converted a high-value carbon allotrope, asphaltene-derived flash graphene (AFG), via joule heating (FJH) process. After successful conversion, develop...
Abstract Extrusion-based additive manufacturing (AM) enables the fabrication of three-dimensional structures with intricate cellular architectures where material is selectively dispensed through a nozzle or orifice in layer-by-layer fashion at macro-, meso-, and micro-scale. Polymers their composites are one most widely used materials great interest field AM due to vast potential for various applications, especially medical, military, aerospace, automotive industries. Because architected...
Despite decades of research, metallic corrosion remains a long-standing challenge in many engineering applications. Specifically, designing material that can resist both abiotic as well biotic environments elusive. Here lightweight sulfur-selenium (S-Se) alloy is designed with high stiffness and ductility serve an excellent corrosion-resistant coating protection efficiency ≈99.9% for steel wide range diverse environments. S-Se coated mild shows rate 6-7 orders magnitude lower than bare metal...
Hexagonal boron nitride (h-BN) nanosheets are grown at room temperature by pulsed laser deposition that exhibits remarkable functional properties, creating a scenario for “h-BN on demand” under frugal thermal budget, essential nanotechnology.
Carbon nanotube (CNT)-reinforced polymer nanocomposites are promising candidates for a myriad of applications. Ad hoc CNT-polymer nanocomposite fabrication techniques inherently pose roadblocks to optimized processing, resulting in microstructural defects, i.e., void formation, poor interfacial adhesion, wettability, and agglomeration CNTs inside the matrix. Here, we show that 3D printing technique offers improved processing nanocomposites. During printing, shear-induced flow an engineered...
Atomic force microscopy (AFM) techniques have provided and continue to provide increasingly important insights into surface morphology, mechanics, other critical material characteristics at the nanoscale. One attractive implementation involves extracting meaningful properties, which demands physically accurate models specifically designed for AFM experimentation simulation. The community has pursued precise quantification extraction of rate-dependent in particular, a significant period time,...
Abstract Probe-induced soft sample damage in atomic force microscopy (AFM), as well the resulting alteration of local mechanical and electrical properties material are explored, specifically comparing contact-mode intermittent-contact-mode imaging methods. In our experiments, performed on conductive polymer films, induced changes present while they negligible or absent tapping-mode imaging. To understand this result, a viscoelastic parameter extraction is performed, which suggests that...
Here, the synthesis of Molybdenum Disulphide (MoS2) flakes by means anodic atmospheric arc discharge is reported for first time. The vertical electrode configuration consisted a compound anode (hollow graphite filled with MoS2 powder) and solid cathode placed just above anode. Arc processes were operated in pulsed mode to preferentially evaporate powder component from minimize Carbon ablation. Pulsed discharges conducted at 2 Hz 10% duty cycle 300 Torr Helium peak current 250–300 A voltage...
We demonstrate development of structural monolithic supercapacitors (MSCs) <italic>via</italic> vacuum-assisted layering composite strata using graphene nanosheets (GE), polyaramid nanofibers (PANF), and boron nitride (BNNS).
The surging demand for electronics is causing detrimental environmental consequences through massive electronic waste production. Urgently shifting toward renewable and eco-friendly materials crucial fostering a green circular economy. Herein, we develop multifunctional bionanocomposite using an algae-derived carbohydrate biopolymer (alginate) boron nitride nanosheet (BNNS) that can be readily employed as dielectric material. adopted rational design principle includes spatial locking of...
Nowadays, development of environment friendly (green), high efficiency and low cost engineering materials is the main focus researchers, where composite at central point. In this regard, natural fiber reinforced polymer composites have gained much attention because their light weight, ease fabrication, biodegradability, etc. A large amount sand/clay mineral also widely used as fillers for composites. This paper deals with effects jute river based sand particle on tensile strength...
Room temperature growth of two-dimensional van der Waals (2D-vdW) materials is indispensable for state-of-the-art nanotechnology. The low supersedes the requirement elevated accompanied with high thermal budgets. Moreover, electronic applications, or room reduces possibility intrinsic film-substrate interfacial diffusion related deterioration functional properties and consequent device performance. Here, we demonstrated ultrawide-bandgap boron nitride (BN) at by using pulsed laser deposition...
Keywords: atomic force microscopy (AFM); creep; mapping; indentation; Kelvin–Voigt; static spectroscopy (SFS); viscoelasticity
Carbon Nanotubes (CNTs)-polymer composites are promising candidates for a myriad of applications. Ad-hoc CNTs-polymer composite fabrication techniques inherently pose roadblock to optimized processing resulting in microstructural defects i.e., void formation, poor interfacial adhesion, wettability, and agglomeration CNTs inside the polymer matrix. Although improvement microstructures can be achieved via additional steps such as-mechanical methods and/or chemical functionalization, somewhat...
Plain concrete is very brittle and weak. It cannot withstand sudden shock, cyclic load high level of tensile stress. So, reinforced by various types structural steels. To reduce the overall weight RCC structures, worldwide practice to use strength steels along with concrete. In this research work low ductility (300 grade) moderate (500 locally produced steel bars 20mm diameter were used. They then characterized means chemical composition, microstructure, size distribution inclusion...
Here, the synthesis of Molybdenum Disulphide (MoS2) flakes by means anodic atmospheric arc discharge is reported for first time. The vertical electrode configuration consisted a compound anode (hollow graphite filled with MoS2 powder) and solid cathode placed just above anode. Arc processes were operated in pulsed mode to preferentially evaporate powder component from minimize Carbon ablation. Pulsed discharges conducted at 2 Hz 10% duty cycle 300 Torr Helium peak current 250-300 A voltage...