arXiv subjects

I-Nan Lin

Publications and source records attributed to I-Nan Lin.

8 recordsLinked to original sources

arXiv2018

Tribological Properties of Ultrananocrystalline Diamond Nanowire Thin Film: Influence of Sliding Ball Counterbodies

Ultrananocrystalline Diamond Nanowire (UNCD NW) thin film was deposited on mirror polished silicon substrate (100) using Microwave Plasma Enhanced Chemical Vapor Deposition (MPECVD) System with optimized deposition parameters in CH4 (6%)/N2 plasma media. The film exhibited wire like morphology with randomly oriented and homogeneously distributed ultranano diamond grains separated by an interphase boundary of graphitic and amorphous carbon (a-C) phases. Micro-tribological studies of film were carried out against Al2O3, SiC and steel balls in ambient atmospheric conditions. Initially, the friction coefficient was found to be high for UNCD NW/SiC and UNCD NW/Steel sliding pairs which gradually decreased to low value. While, in UNCD NW/Al2O3 sliding combination, the ultralow value of friction coefficient was maintained throughout the whole sliding process. High wear resistant properties of the film were observed in UNCD NW/SiC and UNCD NW/Steel pairs. In UNCD NW/Al2O3 case, ball counterbody showed negligible wear dimension. Such kind of tribological behavior was attributed to the different type of mechanical and chemical interactions of ball counterbodies with UNCD NW thin film.

physics.app-ph↗

arXiv2018

Ultrananocrystalline Diamond Film: Tribological Studies Against Metal and Ceramic Balls

In this present work, friction and wear behavior of UNCD thin film has been studied against three different sliding counterbodies i.e. Al2O3, SiC and steel balls. UNCD/steel sliding pair showed high friction coefficient in the beginning of the sliding process which decreased to the lower value after longer sliding passes. This behavior might be explained by oxidation mechanism. However, high friction value was observed in the case of UNCD/SiC and this was attributed to strong adhesive force acting across the sliding interfaces. Stable and low friction value was measured in UNCD/Al2O3 sliding combination. This was governed by chemically inert interfaces and graphite tribolayer formation.

cond-mat.mtrl-sci↗

arXiv2016

Formation of tiny particles and their extended shapes-Origin of physics and chemistry of materials

Tiny-sized particles under the scheme of monolayer assembly, comprising gold atoms, developed at a different processing time in a pulse-based process. For a different processing time, atoms bind into different tiny particles under the placing packets of nanoshape energy where they elongate as per arrangement and when in one-dimensional arrays, they convert into structures of smooth elements. For different processing time and where tiny particles possess triangular-shape, they pack to develop extended shapes where development rate of an anisotropic particle is not more than millisecond time. Increasing the processing time of solution upto certain duration increases the number of developing tiny particles in a triangular-shape, so, their extended shapes also. Uniformly adjacent-orientation of electrons in atoms of tiny-shaped particle is because of exerting uniform surface force along their opposite poles as per gained potential energy where stretching of their clamped energy knots is remained orientational-based. At a different processing time, inter-spacing distance of spotted intensity spots in selective area photons reflection patterns of particles is remained the same as for the case of their structures of smooth elements visualized through transmission microscope high-resolution images. When the forceful coinciding of two parallel structures of smooth elements is occurred, they bind into single element structure of smooth element by a bit overlying inner sides, thus, giving its double width where certain filled state electrons and unfilled energy knots belonging to sides of elongated atoms of parallel structures of smooth elements coordinate to adhere. This study discusses the formation of tiny particles following by their extended shapes at different processing time of gold solution while employing a pulse-based electron-photon solution-interface process where they become the origin

cond-mat.mtrl-sci↗

arXiv2016

Controlling Morphology-Structure of Gold Tiny Particles, Nanoparticles and Particles at Different Pulse Rates and Pulse Polarity

Controlling the shape and structure of metallic colloids is an important topic. Here, different morphology-structures of colloidal gold particles are investigated with different process parameters in a pulse-based electron-photon and solution interface process. Different tiny-shaped particles of gold developed for different packets of supplied nano-energy as per set pulse OFF to ON time. Depending on the set ratios of pulse OFF to ON times and pulse polarity, packets of nano-energy bind transitional state gold atoms resting at electronically-flat solution surface that is controlled in their own shapes. Tiny particles of joined triangular shape in each case developed under set tuned ratio of bipolar pulses OFF to ON time. At unipolar pulse, tiny particles in triangular shape developed directly. When the ratio of bipolar pulse OFF to ON time was large, distorted shapes of the particles developed. Geometrical shapes of particles developed under significant ratios of pulse OFF to ON times. When the ratio of bipolar pulse OFF to ON time was 3, particles developed in low aspect ratio. But under the fraction of this ratio, particles tend to develop in high aspect ratio. For longer pulse ON time, structures of smooth elements get developed in width less than inter-spacing distance and forcing energy of travelling photons along the interface to flatten them further. Morphology and structure of tiny particles, nanoparticles and particles are discussed for different process parameters opening multiple routes for materials research and their counterparts. This is the overall attained orientation of electrons in elongated atoms forming colloidal particles of different size and shape maintaining the certain color of their solution under sunlight.

cond-mat.mtrl-sci↗

arXiv2016

Tapping opportunity of tiny shaped particles and role of precursor in developing shaped particles

Metallic colloids are frequently used in industry and provide understanding of science at microns to nanometers scales along with their applicability for various technologically important applications. Present investigations deal morphology-structure of gold, silver and their binary composition while processing the certain amount of their solutions in a newly designed process and tap opportunities of developing tiny shaped particles. At tuned ratio of pulse OFF to ON time and when gold solution was processed, several tiny shaped particles developed at solution surface. Such tiny particles deal force at the tip of each converted structure of smooth element under the steady-state immersing behavior pointing toward common centre to pack for developing different geometric anisotropic shaped particles. Under identical parameters along with pulse time, processing solutions of silver nitrate and binary composition of chloroauric acid-silver nitrate result into develop tiny particles having no specific shape where their packing deal mixed behavior of force resulting into develop distorted particles. Elongation and deformation of gold and silver atoms while in different structures is because of the plastically-driven behavior of electrons as per stretching of their clamped energy knots. In structure of three-dimensional where electrons of atoms do not deal transition require for elongation they retain the structure as it is known in hcp structure or two-dimensional structure. Different nature of precursors along with morphology-structure of particles is discussed in this paper opening abundant avenues of research.

cond-mat.mtrl-sci↗

arXiv2016

Development of Gold Tiny Particles and Particles in Different Sizes at Varying Precursor Concentration

Coalescence (or Growth) of tiny particles to larger particles has been an exciting and practical research topic in nanotechnology. This study deals with development of gold particles at varying precursor concentration in a custom-built setup. Under the tuned ratio of bipolar pulse OFF to ON time, tiny particles of different sizes and shapes develop depending on the amount of gold precursor. When compact monolayer assembly is formed on solution surface, nano energy in packet shapes bind gold atoms in own shape. Between 0.07 mM to 0.90 mM precursor concentration, tiny particles develop in both triangular and non-triangular shapes. Tiny particles of triangular shape develop in a large number at precursor concentration 0.30 mM and 0.60 mM. Hence, nanoparticles and particles also developed in different geometrical shapes. Such tiny particles pack due to the exerted force in immersing format, where made structures of smooth elements assemble to develop nanoparticles and particles of different shapes. Tiny particles of non-geometrical shapes do not assemble at a common point and their assembling develops a nanoparticle or particle of distorted or spherical shape. This occurs mainly when precursor concentration is 0.05 mM and 1.20 mM. At 50 sccm Argon flow rate, nanoparticles and particles develop in the same shapes as in case of 100 sccm. For different precursor concentrations, different colors of solutions indicate different features of nanoparticles and particles. This study clarifies the necessary concentration of precursor to develop colloids of different sizes.

cond-mat.mtrl-sci↗

arXiv2016

Effects of the Electronic Structure, Phase Transition, and Localized Dynamics of Atoms in the Formation of Tiny Particles of Gold

In addition to the self-governing properties, tiny metallic colloids are the building blocks of larger particles. This topic has been the subject of many studies. This work discusses the results of three different experiments. Attained dynamics of the atoms also play a role in developing tiny particles. Atoms at the solution surface can also bind by the nano energy packets. Arrays of atoms convert into structures of smooth elements. When electron streams impinge on gold atoms at a fixed angle, atoms can elongate further. Traveling photons along the interface affect the atomic arrays. Gold atoms can also develop different tiny particles in solution. Various factors to their development contribute. The present work also considers the analyses of some tiny-sized particles. In the processing of tiny-metallic colloids at different parameters, major leveled modifications of atoms took place. The study also discusses the influence of traveling photons along the matter-solution interface. This study highlights the fundamental process of developing a variety of tiny particles. Several possibilities may open through the pulse-based process to develop engineered materials.

cond-mat.mtrl-sci↗

arXiv2016

Phase transitions and critical phenomena of tiny grains carbon films synthesized in microwave-based vapor deposition system

Different peak trends of tiny grains carbon film have been observed under the investigations of Raman spectroscopy and energy loss spectroscopy. Carbon films known in nanocrystalline and ultra-nanocrystalline diamond films are synthesized by employing microwave-based vapor deposition system. Carbon atoms exhibit several state behaviors depending on the incurred positions of their electrons. Different morphology of tiny grains under different chamber pressure is related to different rate of arriving typical energies at/near substrate surface. Those tiny grains of carbon film which evolved in graphitic state atoms are converted to structure of smooth elements where elongation of atoms of one-dimensional arrays is as per exerting surface format forces along opposite poles from their centers. Such tiny grains in the film are the cause of v1 peak under the investigation of the Raman spectrum because of the enhanced propagation of input laser signals through channelized inter-state electron gaps of elongated graphitic state atoms. Those tiny grains of carbon film which evolved in fullerene state are the cause of v2 peak. The tiny grains related to v1 peak possess a low intensity as compared to the ones which comprised atoms having state behaviors known in their exceptional hardness. Tiny grains representing v1 peak in the Raman spectrum are also the cause of field emission characteristic of a carbon film. Different peak recordings were made for the Raman at defined positions indicating a different state of carbon atoms for a different phase of deposited tiny grains, which is in line to their energy loss spectroscopy.

cond-mat.mtrl-sci↗