Led by Editor-in-Chief Ji-Xin Cheng, a pioneer in coherent Raman scattering microscopy, the editorial team has brought together various experts on each aspect of SRS imaging from around the world to provide an authoritative guide to this increasingly important imaging technique. This book is a comprehensive reference for researchers, faculty, postdoctoral researchers, and engineers.
Includes every aspect from theoretic reviews of SRS spectroscopy to innovations in instrumentation and current applications of SRS microscopy Provides copious visual elements that illustrate key information, such as SRS images of various biological samples and instrument diagrams and schematics Edited by leading experts of SRS microscopy, with each chapter written by experts in their given topics.
Ji-Xin Cheng Dr. For his pioneering contributions to the chemical imaging field, Cheng received the Pittsburg Spectroscopy Award, the Ellis R. Lippincott Award, and the Craver Award. Wei Min Dr. Wei Min graduated from Peking University in He received his Ph. Get BOOK. This book covers the key concepts from the fundamentals, materials, experimental aspects, and applications of SERS in clinical diagnostics.
Applications of Raman Spectroscopy to Biology. The current state-of-the-art in 3D printing focuses on material manufacturability and engineering applications. However, there still exists the bottleneck of low printing resoln. An interesting phenomenon is the preferential alignment of nanoparticles that enhance material properties.
Therefore, this review emphasizes the landscape of nanoparticle alignment in the context of 3D printing. Herein, a brief overview of 3D printing is provided, followed by a comprehensive summary of the 3D printing-enabled nanoparticle alignment in well-established and inhouse customized 3D printing mechanisms that can lead to selective deposition and preferential orientation of nanoparticles.
Subsequently, it is listed that typical applications that utilized the properties of ordered nanoparticles e. This review emphasizes on the particle alignment methodol. In the end, significant limitations of current 3D printing techniques are identified together with future perspectives. Flowers, Patrick F. This work examines the use of dual-material fused filament fabrication for 3D printing electronic components and circuits with conductive thermoplastic filaments.
The resistivity of traces printed from conductive thermoplastic filaments made with carbon-black, graphene, and copper as conductive fillers was found to be 12, 0. The carbon black and graphene filaments were brittle and fractured easily, but the copper-based filament could be bent at least times with little change in its resistance.
Impedance measurements made on the thermoplastic filaments demonstrate that the copper-based filament had an impedance similar to a copper PCB trace at frequencies greater than 1 MHz. Dual material 3D printing was used to fabricate a variety of inductors and capacitors with properties that could be predictably tuned by modifying either the geometry of the components, or the materials used to fabricate the components.
These resistors, capacitors, and inductors were combined to create a fully 3D printed high-pass filter with properties comparable to its conventional counterparts. The relatively low impedance of the copper-based filament enabled its use for 3D printing of a receiver coil for wireless power transfer.
This work thus demonstrates the potential for FFF 3D printing to create complex, three-dimensional circuits composed of either embedded or fully-printed electronic components. Sochol, Ryan D. Submillimeter-scale domains offer wide-ranging benefits for chem. Historically, microfluidic device construction has predominantly relied on micromachining technologies that are rooted in the semiconductor and microelectromech.
These methodologies have enabled microfluidic platforms to be fabricated with fully integrated microelectronics - a crit. EWOD phenomena , and on-chip electrochem. Despite the distinguishing capabilities afforded by conventional microfabrication protocols, a no.
Here we review recent progress in the development of both 3D printed microfluidics and 3D printed microelectronics. We evaluate the distinctive benefits and constraints assocd. Lastly, we examine the potential use of 3D printing-based approaches for manufg. Hwang, Seyeon; Reyes, Edgar I.
The acrylonitrile butadiene styrene ABS thermoplastic was mixed with copper and iron particles. The percent loading of the metal powder was varied to confirm the effects of metal particles on the thermo-mech. The printing parameters such as temp. As a result of this study, it was confirmed that the tensile strength of the composites is decreased by increasing the loading of metal particles.
The material could also be used in 3D printed circuits and electromagnetic structures for shielding and other applications. Selective electroplating of 3D printed parts. Angel, Kristin; Tsang, Harvey H.
Fused filament fabrication FFF 3D printers have been largely limited to thermoplastics in the past but with new composite materials available on the market there are new possibilities for what these machines can produce. Using a conductive composite filament, electronic components can be manufd. Selective electroplating on these parts is one approach to incorporate materials with high cond.
In this paper, non-conductive and conductive filaments printed in the same part are used to enable selective electroplating directly on regions defined by the conductive filament to create metallic parts through 3D printing. This technique is demonstrated for the creation of multiple distinct conductive segments and to electroplate the same part with multiple metals to, for instance, allow a magnetic metal such as nickel and a highly conductive one such as copper to be incorporated in the same part.
Following the characterization of the process, a representative 3D printed elec. This is a five order of magnitude redn. Electroless Deposition of Metals and Alloys. In Modern Aspects of Electrochemistry , 35 th ed. Morphological transitions from dendrites to nanowires in the electroless deposition of silver.
Growth Des. Avizienis, Audrius V. A morphol. The transition to dendritic growth is interpreted as arising from local reaction anisotropies interacting with the global solute concn. Reactions were performed on substrates bearing lithog. The resulting concave growth fronts produce branched, dendritic structures. For Cu posts smaller than 3. Silver-based surface enhanced Raman scattering SERS substrate fabrication using nanolithography and site selective electroless deposition.
In this work active SERS surface enhanced Raman scattering substrates are obtained by electron beam lithog. The combination of these two techniques allows to obtain well-defined metal structures, with a considerable advantage in Raman signal enhancement and in device reproducibility.
The active-substrates are composed of silver, gold or a combination of the two metals, with different nanoparticles characteristics, obtained by varying metal deposition time. Rhodamine 6G was used as probe mols. Objective assessment of SERS thin films: comparison of silver on copper via galvanic displacement with commercially available fabricated substrates. Methods , 9 , — , DOI: However, the assessment of these surfaces in terms of their reproducibility for SERS is often subjective and while many spectra could and indeed should be reported, very few repeat measurements are typically used.
Here, the performance of three SERS thin film substrates is assessed objectively using both univariate and novel multivariate methods. The reproducibility of these substrates was assessed using rhodamine 6G R6G as a probe analyte and seven common vibrational bands that were obsd.
In order to be as objective as possible a total of seven different data anal. Finally, through the collection of large datasets contg. Electroless deposition via galvanic displacement as a simple way for the preparation of silver, gold, and copper SERS-active substrates. Colloids Surf. Plasmonic substrates can provide efficient enhancement of the local elec.
Commonly used techniques for prepg. The tested approach involves electroless deposition via galvanic displacement. The produced substrates were examd. For SERS anal. Principal component anal. It was confirmed that tested deposition solns. Data statistical processing showed that the intensity of measured FT-SERS spectra is less affected by a deposition time and more affected by the pH and compn.
Anisotropic material properties of fused deposition modeling ABS. Rapid Prototyping J. Manipulating magnetic anisotropy in fused filament fabricated parts via macroscopic shape, mesoscopic infill orientation, and infill percentage. Patton, Michael V. The application space for three-dimensional 3D printing, such as fused filament fabrication FFF , has grown significantly through the use of high-performance composite materials. While the mech. AM polymer composites are being actively studied, the magnetic properties of AM parts have seen much less attention.
Prior research has shown that the structural print settings for FFF influence the magnetic properties of the printed part Bollig et al. However, the structural hierarchy present in the FFF process complicates a simple anal. Here, a magnetic filament consisting of polylactic acid PLA polymer and 40 wt. The array of samples systematically covered different aspect ratios length:width , edge contours rectangular vs. The key results show that the highest magnetic susceptibility was seen for magnetic fields applied parallel to the infill orientation.
The macroscopic geometry increased the magnetic susceptibility parallel to the long axis of the sample. Lastly, certain factors, such as edge contours and infill percentage, only affected the magnetic susceptibility when the magnetic field was applied transverse to the infill orientation, but had no effect when field was applied along the infill direction.
Elucidating how the part shape, infill orientation, and infill percentage affects the magnetic properties of AM parts will help the community better understand how an FFF process can be utilized to make optimal magnetic components, such as transformer cores, elec. Measurement of anisotropic thermal conductivity and inter-layer thermal contact resistance in polymer fused deposition modeling FDM.
Additive manufg. Specifically, in polymer-based additive manufg. Due to the directional nature of this process, it is of interest to det. Such an understanding is crit.
This paper reports measurement of thermal cond. Samples are designed and built in order to force heat flow only in one direction during thermal property measurement. Both thermal conductivities are found to depend strongly on the air gap between adjacent filaments. A theor. These measurements are also used to det. Cross section images of samples confirm the strong effect of the gap on the microstructure, and hence on thermal properties.
Results from this paper provide a key insight into the anisotropic nature of thermal conduction in additively manufd. These results may be helpful in the fundamental understanding of heat transfer in 3D-printed components, as well as in accurate design and fabrication of heat transfer components through 3D printing. The rapid printing of 3D parts with desired elec. Fused deposition modeling FDM using conductive thermoplastic composites has been a valuable approach for such fabrication.
The parts produced by FDM possess various controllable structural features, but the effects of the structural features on the elec. This study investigated the effects of these features on the elec. The effects of the process parameters of FDM, including the layer thickness, raster width, and air gap, on the resistivity in both the vertical and horizontal directions for cubic samples were studied because the internal structure of the printed parts depended on those process parameters.
The resistivities of printed parts in different parameter combinations were measured by an impedance analyzer and finite element models were created to investigate the relationship between the resistivity and the internal structure. The results indicated that the parameters remarkably affected the resistivity due to the influence of voids and the bonding condition between adjacent fibers.
The resistivity in the vertical direction ranged from Moreover, by adjusting the resistivities in different directions, the resistivity anisotropy of the printed parts can be manipulated from 1.
This research may serve as a ref. Anisotropic metal nanoparticles for surface enhanced Raman scattering. The optimization of the enhancement of Raman scattering by plasmonic effects is largely detd. The main parameters behind this effect are related to the morphol.
We focus this tutorial review on the effects of nanoparticle morphol. Anisotropy in silver and gold nanoparticles offers the possibility to tailor their plasmonic properties and intrinsic electromagnetic "hotspots". Especial emphasis is made on existing comparative studies that shed light on the effect of nanoparticle anisotropy on their enhancement capabilities. We aim at providing a general perspective toward understanding the general key factors and highlighting the difficulty in quant.
SERS performance. Oxidation effects on the SERS response of silver nanoprism arrays. RSC Adv. Silver nanostructures are widely employed for Surface Enhanced Raman Scattering SERS characterizations owing to their excellent properties of field confinement in plasmonic resonances. However, the strong tendency to oxidn. In the present work, we investigated in detail the effects of oxidn.
Particularly, wavelength-scanned SERS measurements were performed on Ag nanoprism arrays with a different level of oxidn. With this approach, we were able to decouple the effects of spectral shift and decrease of the max. The results could be interpreted taking into account the inhomogeneities of the electromagnetic field distribution around the Ag nanostructures, as demonstrated by the simulations. SERS sensing of sulfide based on the sulfidation of silver nanoparticles.
Methods , 5 , — , DOI: Demonstrate is a simple SERS sensing system, based on the sulfidation of silver nanoparticles, for highly selective sulfide detection in environmental and biol. Anisotropic surface-enhanced Raman scattering in shape-controlled Ag microcoils.
Ag nanostructure-based surface-enhanced Raman scattering SERS substrates tend to be oxidized and corroded by sulfides owing to their large sp. Contrastingly, micrometer-sized Ag structures are more chem. Nevertheless, no reports exist on the utilization of Ag microstructures as SERS substrates, as they lack hot spots. Herein, for the first time, SERS is obsd.
The geometry-dominated anisotropic SERS effect is investigated by controlling the shape of Ag microcoils. A new model is proposed to elucidate the mechanism of hot spot formation in Ag microcoils. The results of this study should aid efforts to develop improved SERS substrates. Electrochemical synthesis and deposition of surface-enhanced Raman scattering-active silver microstructures on a screen-printed carbon electrode.
C , , — , DOI: The authors demonstrated Ag microstructures with controlled morphologies directly deposited on a screen-printed C electrode by using electrochem. X-ray diffractometry were used for characterizing as-prepd. Ag substrates. Thereafter, the potential of the flower-like Ag microstructures for use in surface-enhanced Raman scattering SERS applications was studied. The flower-like Ag microstructures provided a more intense SERS signal because of extremely intense local electromagnetic fields.
The percentage of relative std. Also, the thermal stability and aging behavior of the microstructures were improved. No SPIE account? Create an account Institutional Access:. The alert successfully saved. The alert did not successfully save. Please try again later. Zhe Chuan Feng, W. Evans, Martin Kuball, Ken P.
0コメント