|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Atomic and Close-to-Atomic Scale Manufacturing:A Review on Atomic Layer Removal Methods Using Atomic Force Microscopy显示文摘Manufacturing at the atomic scale is the next generation of the industrial revolution.Atomic and close-to-atomic scalemanufacturing(ACSM)helps to achieve this.Atomic force microscopy(AFM)is a promising method for this purposesince an instrument to machine at this small scale has not yet been developed.As the need for increasing the number ofelectronic components inside an integrated circuit chip is emerging in the present-day scenario,methods should be adoptedto reduce the size of connections inside the chip.This can be achieved using molecules.However,connecting moleculeswith the electrodes and then to the external world is challenging.Foundations must be laid to make this possible for thefuture.Atomic layer removal,down to one atom,can be employed for this purpose.Presently,theoretical works are beingperformed extensively to study the interactions happening at the molecule-electrode junction,and how electronic transportis affected by the functionality and robustness of the system.These theoretical studies can be verified experimentally only if nano electrodes are fabricated.Silicon is widely used in the semiconductor industry to fabricate electronic components.Likewise,carbon-based materials such as highly oriented pyrolytic graphite,gold,and silicon carbide find applications inthe electronic device manufacturing sector.Hence,ACSM of these materials should be developed intensively.This paperpresents a review on the state-of-the-art research performed on material removal at the atomic scale by electrochemical andmechanical methods of the mentioned materials using AFM and provides a roadmap to achieve effective mass productionof these devices. | Paven Thomas Mathew Brian J.Rodriguez Fengzhou Fang | 2020 | Nanomanufacturing and Metrology2020，3，3： | 9 |
| 2 | Liquid-phase 3D bioprinting of gelatin alginate hydrogels:influence of printing parameters on hydrogel line width and layer height显示文摘Extrusion-based 3D bioprinting is a direct deposition approach used to create three-dimensional(3D)tissue scaffolds typically comprising hydrogels.Hydrogels are hydrated polymer networks that are chemically or physically cross-linked.Often,3D bioprinting is performed in air,despite the hydrated nature of hydrogels and the potential advantage of using a liquid phase to provide cross-linking and otherwise functionalize the hydrogel.In this work,we print gelatin alginate hydrogels directly into a cross-linking solution of calcium chloride and investigate the influence of nozzle diameter,distance between nozzle and surface,calcium chloride concentration,and extrusion rate on the dimensions of the printed hydrogel.The hydrogel layer height was generally found to increase with increasing extrusion rate and nozzle distance,according to the increased volume extruded and the available space,respectively.In addition,the hydrogel width was generally found to increase with decreasing nozzle distance and cross-linking concentration corresponding to confinement-induced spreading and low crosslinking regimes,respectively.Width/height ratios of^1 were generally achieved when the nozzle diameter and distance were comparable above a certain cross-linking concentration.Using these relationships,biocompatible 3D multilayer structures were successfully printed directly into calcium chloride cross-linking solution. | Maha Alruwaili Jose A.Lopez Kevin McCarthy Emmanuel G.Reynaud Brian J.Rodriguez | 2019 | Bio-Design and Manufacturing2019，2，3： | 1 |
| 3 | Toward Single-Atomic-Layer Lithography on Highly Oriented Pyrolytic Graphite Surfaces Using AFM-Based Electrochemical Etching显示文摘Atomic force microscopy(AFM)-based electrochemical etching of a highly oriented pyrolytic graphite(HOPG)surface is studied toward the single-atomic-layer lithography of intricate patterns.Electrochemical etching is performed in the water meniscus formed between the AFM tip apex and HOPG surface due to a capillary effect under controlled high relative humid-ity(~75%)at otherwise ambient conditions.The conditions to etch nano-holes,nano-lines,and other intricate patterns are investigated.The clectrochemical reactions of HOPG etching should not generatc debris duc to the conversion of graphite to gaseous CO and CO_(2)based on etching reactions.However,debris is observed on the etched HOPG surface,and incom-plete gasification of carbon occurs during the etching process,resulting in the generation of solid intermediates.Moreover,the applied potential is of critical importance for precise etching,and the precision is also significantly influenced by the AFM tip wear.This study shows that the AFM-based electrochemical etching has the potential to remove the material in a single-atomic-layer precision.This result is likely because the etching process is based on anodic dissolution,resulting in the material removal atom by atom. | Wei Han Paven Thomas Mathew Srikanth Kolagatla Brian J.Rodriguez Fengzhou Fang | 2022 | Nanomanufacturing and Metrology2022，5，1： | 1 |
| 4 | Foreword to the Special Issue on SPM-Based Nanofabrication:Machining,Electrochemistry,and Lithography显示文摘Scanning probe microscopy(SPM)and atomic force microscopy(AFM)are widely used for surface imaging and characterization,combining nano-to atomic-scale precision with highly sensitive force measurements.Thus,AFM is considered an enabling technology,impacting many scientific fields,including life and materials sciences.In addition to mapping interaction forces,AFM can be used for the precise application of forces(controlling both location and magnitude),in combination with the application of electrical bias and controlled environments.Moreover,when combined with advances in nanoscale probe technology,SPM-based nanofabrication enables state-of-the-art nanomanufacturing at interfaces. | Brian J.Rodriguez Jason I.Kilpatrick | 2022 | Nanomanufacturing and Metrology2022，5，1： | 0 |
| 5 | Deterministic Dual Control of Phase Competition in Strained BiFeO_(3):A Multiparametric Structural Lithography Approach显示文摘The realization of a mixed-phase microstructure in strained BiFeO_(3)(BFO)thin films has led to numerous novel effects derived from the coexistence of the tetragonal-like monoclinic phase(T phase)and rhombohedral-like monoclinic phase(R phase).Strong strain and polarization diiferences between the phases should result in a high level of transformation plasticity,which enables the continuous alteration of the relative proportion of R and T states in response to external forces.Although the potential for utilizing such plasticity to control mixed-phase populations under external stimuli is evident,direct experi・mental evidence backed by equilibrium predictions has not yet been fully demonstrated.Here we demonstrate deterministic control of mixed-phase populations in an epitaxially strained BFO thin film through the application of localized stresses and electric fields in a reversible manne匚The results illustrate and rationalize deterministic control of mixed phases in strained BFO films,which could be crucial in tuning their functional properties.The findings also highlight a new multiparametric technique in the scanning probe lithography toolbox based on tip-assisted electric and strain field manipulation of functional properties that might find application beyond the ferroelectric domain and structural phase lithography. | Nathan Black David Edwards Niall Browne Joseph G.M.Guy Niyorjyoti Sharma Kristina M・Holsgrove Aaron B.Naden Raymond G.P.McQuaid Brian J.Rodriguez Amit Kumar | 2022 | Nanomanufacturing and Metrology2022，5，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员