Omer Caylan

• Doctor of Philosophy
• PostDoc Position at Massachusetts Institute of Technology

Two-dimensional transition metal carbides, particularly chemical vapor deposition (CVD)-grown molybdenum carbide (Mo2C), are promising for next-generation electronic applications. However, achieving large-area, high-quality single crystals with controlled thickness remains challenging due to the non-self-limiting nature of conventional CVD. Moreove...

This study explores the compressive mechanical properties of copper composites reinforced with graphene. Graphene was synthesized on copper powders via plasma-enhanced chemical vapor deposition. Multilayer graphene formation has been substantiated by Raman analysis. Graphene-coated copper (G/Cu) powders were then subjected to pressing and sintering...

Moisture-capturing materials can enable potentially game-changing energy-water technologies such as atmospheric water production, heat storage, and passive cooling. Hydrogel composites recently emerged as outstanding moisture-capturing materials due to their low cost, high affinity for humidity, and design versatility. Despite extensive efforts to...

In recent years, there has been extensive research on the memristor, a non-volatile memory device that demonstrates effective emulation of biological synapses. The implementation of graphene as a top electrode in memristive switching systems presents an intriguing alternative to conventional materials such as Platinum. Graphene, as a carbon-derived...

Graphene-reinforced copper composites have gained significant attention due to their exceptional properties and potential applications across various industries. This study presents a novel approach to synthesize 3D graphene–copper heterostructures using a plasma-enhanced chemical vapor deposition (PECVD) technique. The method involves encapsulatin...

In this work, the chemical vapor deposition synthesis of the Mo2C/graphene heterostructure above the melting temperature of Cu bias (1356 K) is studied. Two sets of Mo2C growth experiments at high CH4 flow rates (5 SCCM ≥ 3 SCCM) are performed, either using prior-graphene synthesis or having in situ graphitization, for three different Cu bias thick...

We investigated the growth mechanism of 2D Mo2C crystals by chemical vapor deposition (CVD) under various time and temperature conditions. The growth kinetics and mechanism of Mo2C on Cu via chemical vapor deposition (CVD) were investigated using a modified Johnson-Mehl-Avrami-Kolmogorov (JMAK) model. To analyze the surface coverage, we employed sc...

Thin transition metal carbides (TMCs) garnered significant attention in recent years due to their attractive combination of mechanical and electrical properties with chemical and thermal stability. On the other hand, a complete picture of how defects affect the physical properties and application potential of this emerging class of materials is lac...

This study investigates the growth of Mo 2 C crystals via chemical vapor deposition (CVD) in the presence of a carbon (H 2 /CH 4 gas)-containing environment. The study employs both theoretical and experimental approaches to investigate the vertical and lateral (in-plane) growth of Mo 2 C crystals. A physico-mathematical consideration is applied to...

In the present study, the capabilities of different chip materials for acoustic particle manipulation have been assessed with the same microfluidic device architecture, under the same actuator and flow conditions. Silicon, glass, epoxy with fiberglass filling (FR4), polydimethylsiloxane (PDMS) and polymethyl methacrylate (PMMA) are considered as ch...

Observation of thermally activated delayed fluorescence (TADF) in conjugated systems redefined the molecular design approach to realize highly efficient organic light emitting diodes (OLEDs) in the early 2010s. Enabling effective reverse intersystem crossing (RISC) by minimizing the difference between singlet and triplet excited state energies (ΔES...

The secondary operations of composite parts are performed following thermal cure processes, which generate the final dimensions with desired tolerance and quality specifications. High-strength composites, on the other hand, especially aramid fiber-reinforced polymers (AFRP), are not suitable for conventional machining operations due in part to high...

We investigated the chemical vapor deposition synthesis of Mo2C/graphene heterostructures on a partially wetted liquid copper surface, studied the morphology of resulting phases using electron and optical microscopy, and determined the rate‐limiting step for the growth of Mo2C on graphene. The morphology of the Mo2C crystals varied from the center...

No PDF available ABSTRACT Ultrasonic particle manipulation in microchannels is a rapidly growing research field with significant potential applications in biological studies. Several factors are essential in achieving effective manipulation, such as obtaining resonance conditions in the actuator, chip, and/or the microchannel. The choice of chip ma...

Chemical vapor deposition is a promising technique to produce Mo2C crystals with large area, controlled thickness, and reduced defect density. Typically, liquid Cu is used as a catalyst substrate; however, its high melting temperature (1085 °C) prompted research groups to search for alternatives. In this study, we report the synthesis of large-area...

CVD method is a promising technique to produce Mo 2 C crystals with large-area, controlled thickness, and reduced defect density. Typically, liquid Cu is used as a catalyst substrate; however, its high melting temperature (1085 C) prompted a research for alternatives. In this study, we report the synthesis of large-area thin Mo 2 C crystals on liq...

In this study, we present an investigation on the growth of thin Mo2C crystals via chemical vapor deposition using CH4. Optical microscopy (OM), scanning electron microscopy (SEM), atomic force microscopy(AFM), and Raman spectroscopy studies show that the morphology and the thickness of Mo2C crystals are strongly affected by the impurities in the s...