Films Of Various Thicknesses Research Articles

Performance of novel air foil thrust bearings with taper-groove on surface of top foil

To improve the load capacity of air foil thrust bearing, the micro taper-grooves on the surface of top foil was introduced and studied. A modified Reynolds equation considering the gas rarefaction effect was established, in which the Knudsen number was affected by the film thickness and pressure. A new bump stiffness model was built with the consideration of bump rounding, friction, and bending stiffness of foil. By considering the variation of gas film thickness, the load capacity, friction torque, and power loss of novel bearing with grooves were calculated by the finite difference method. Moreover, the effect law of groove parameters, groove shape and grooves number on the novel bearing performance was studied systematically. The results show that the predicted axial load capacity considering gas rarefaction effect is decreased slightly in smaller clearance and more consistent with the actual test data. The novel air foil thrust bearing with taper-groove can weaken the air end leakage and enhance the local dynamic pressure efficiently in the parallel portion of top foil, thus improving the static characteristics of bearing. For the novel air foil thrust bearing with taper-groove depth of 10 µm, the load capacity can be increased by about 13.33%, compared with traditional bearing. With the increments of taper-groove depth and length on top foil, the load capacity can be increased. However, the friction torque is decreased when there is a longer taper-groove in the circumferential direction. Meanwhile, the optimal groove width ratio is about 0.5, and the structure of multi-grooves is beneficial to the decreased friction torque. The validity of presented theoretical model has been verified by the literature data, and the results are expected to be helpful to bearing designers, researchers, and academicians concerned.

Tiled Monolayer Films of 2D Molybdenum Disulfide Nanoflakes Assembled at Liquid/Liquid Interfaces.

Thin films of MoS2 bilayer nanoflakes, which are predominantly a single flake thick and with flakes in edge-to-edge contact, have been produced via self-assembled tiling at the planar interface between two immiscible liquids. Films of several square centimeters extent can be produced with a total covered area approaching 90% and over 70% of the film covered by single flakes without overlap. Films produced through liquid/liquid assembly are shown to produce a lower uncovered area fraction and more uniform thickness when compared with films of similar areal coverage produced by the “top-down” techniques of spin coating and spray coating. Statistical analysis of flake coverage data, measured by atomic force microscopy (AFM), shows that liquid/liquid assembly produces a distinctly different variation in film thickness than conventional top-down deposition. This supports the hypothesis that the two-dimensional (2D) confinement of liquid/liquid assembly produces more uniform films. Demonstrator field-effect transistors (FETs) manufactured from the films exhibit mobility and on/off current ratios of 0.73 cm2 V–1 s–1 and 105, respectively, comparable to FETs of similar layout and chemical vapor deposition (CVD)-grown or mechanically cleaved single-crystal MoS2 channel material. This work demonstrates the use of liquid/liquid interfaces as a useful tool for the self-assembly of high-performance thin-film devices made from dispersions of 2D materials.

Conductivity extraction of thin Ti3C2Tx MXene films over 1–10 GHz using capacitively coupled test-fixture

Thin films of two-dimensional MXene (Ti3C2Tx) are evaluated in terms of their conductivity over the radio frequency (RF) range of 1–10 GHz using a custom designed test fixture. A contactless method is developed for extracting the conductivity of MXene films of various thickness (1.0–4.3 μm) at RF frequencies. Open ended MXene transmission lines with various thicknesses are spray-coated on polyethylene terephthalate substrates capacitively coupled to a copper transmission line test fixture realized on a RT/duroid (filled polytetrafluoroethylene composite laminate) substrate to provide solderless repeatable RF connection. The extraction process is based on the least squares error method of curve fitting to minimize the difference between the full wave numerically simulated scattering parameters and the measured values of the test circuit for various samples. RF characterization was performed for three MXene samples, with thicknesses of about 1.0, 1.5, and 4.3 μm to extract the corresponding conductivity. Moreover, MXene performance was compared against copper and graphite films. The highest conductivity of 1.2 × 106 S/m was extracted for the 4.3 μm thick Ti3C2Tx film. The extracted MXene conductivity is used to predict the quality factor and efficiency of antennas. This study suggests that MXene films are attractive for RF applications and can be used as conductive layers on 3D-printed RF circuits.

Quantifying the Biomagnification Capability of Arctic Wolf and Domestic Dog by Equilibrium Sampling.

The mechanism underlying contaminant biomagnification is a decrease in the volume (V) and the fugacity capacity (Z) of food during digestion in the gastrointestinal tract. Traditionally, biomagnification is quantified by measuring contaminant concentrations in animal tissues. Here, we present a proof-of-concept study to noninvasively derive the thermodynamic limit to an organism's biomagnification capability (biomagnification limit -BMFlim) by determining the ratio of the V·Z-products of undigested and digested food. We quantify Z-values by equilibrating food and feces samples, which have been homogenized and spiked with polychlorinated biphenyls (PCBs), with silicone films of variable thickness coated on the inside of glass vials. We demonstrate the feasibility of this method for wolf (Canis lupus hudsonicus) and domestic dog (Canis lupus familiaris). For an adult wolf eating a relatively lean meat diet, a BMFlim (averaged over several PCB congeners) of approximately 41 was observed, whereas the BMFlim reached 81 for an adult domestic dog eating a lipid-rich diet. Besides the dietary lipid content that strongly affects the Z-value of the diet, the capability of an animal to digest its diet also influences the BMFlim by controlling the Z-values of their feces and the volume reduction of the food in the gastrointestinal tract. Less efficient digestion leads to a lower BMFlim in a juvenile dog (approximately 35) compared to its older self, even though their diets had similar lipid contents. The effect of the volume reduction (VD/VF ranging from 4 to 15) was comparable to the effect of the Z-value reduction (ZD/ZF from 3 to 20).

Domain Size Dependence of the Oxygen Reduction Reaction on (100)-Oriented Au Thin Films

Due to its importance for energy conversion and storage, the oxygen reduction reaction (ORR) is one of the most studied electrochemical reactions. It has been reported that, in alkaline media, Au(100) single crystal is the most active electrocatalyst for the ORR1,2. Different reasons have been proposed to explain this high activity3,4. Understanding this remarkable activity can guide researchers in the design of more active electrocatalysts for practical applications using nanomaterials with specific shape and size. Since the ORR is a structure-sensitive reaction5–7 the manipulation of the structural properties of the materials is a powerful tool to elucidate the reaction mechanism responsible for the ORR and increase the activity of materials towards the reaction.In this work, (100)-oriented Au thin films were deposited on (100) MgO. Thin films with different thicknesses were prepared by pulsed laser deposition and were used as model surfaces to study the ORR activity. Pulsed Laser Deposition (PLD) is a versatile method to prepare thin films with different surface orientations (epitaxial thin films)8,9 , 10. The structure and microstructure of the films were assessed by X-Ray Reciprocal Space Mapping (RSM) and Atomic Force Microscopy (AFM). There results were correlated with those obtained from Cyclic Voltammetry (CV) and Sampled Current Voltammetry (SCV).The ORR activity was observed to be dependent on the film thickness, which is reflected by the shift of the onset and half-wave potentials of the ORR towards more positive potentials for the thicker films. When correlating the ORR activity with the structural and microstructural properties, Fig.1, the evidences suggest that larger lateral coherent lengths are responsible for the enhancement of the ORR catalysis on (100)-oriented Au thin films. The reasons underlying this behavior will be presented and discussed. Figure 1: Plot showing the variation of the onset and half-wave potential, and the variation of the coherence length for thin films of various thicknesses. References (1) Stamenkovic, V. R.; Strmcnik, D.; Lopes, P. P.; Markovic, N. M. Nature Materials. 2016, pp 57–69.(2) Markovic, N. M.; Tidswell, I. M.; Ross, P. N. Langmuir 1994, 10 (1), 1–4.(3) Duan, Z.; Henkelman, G. ACS Catal. 2019, 9, 5567–5573.(4) Schneider, O. Size Dependent Electrocatalysis of Gold Nanoparticles; Elsevier, 2018.(5) Adžić, R. R.; Marković, N. M.; Vešović, V. B.; Adzic, R. R.; Markovic, N. M.; Vesovic, V. B. J. Electroanal. Chem. 1984, 165 (1–2), 105–120.(6) Markovic, N. M.; Gasteiger, H. A.; Ross, P. N. J. Phys. Chem. 1995, 99 (11), 3411–3415.(7) Schmidt, T. J.; Stamenkovic, V.; Arenz, M.; Markovic, N. M.; Ross, P. N. Electrochim. Acta 2002, 47 (22–23), 3765–3776.(8) Sacré, N.; Hufnagel, G.; Galipaud, J.; Bertin, E.; Hassan, S. A.; Duca, M.; Roué, L.; Ruediger, A.; Garbarino, S.; Guay, D. J. Phys. Chem. C 2017, 121 (22), 12188–12198.(9) Garbarino, S.; Imbeault, R.; Sacré, N.; Guay, D. In Encyclopedia of Interfacial Chemistry: Surface Science and Electrochemistry; 2017.(10) Imbeault, R.; Reyter, D.; Garbarino, S.; Roué, L.; Guay, D. J. Phys. Chem. C 2012, 116 (8), 5262–5269. Figure 1

A time-domain ultrasonic approach for oil film thickness measurement with improved resolution and range

The ultrasonic-based method has been proved to be a practical technique for measuring oil film thickness in the enclosed tribo-pair of a supporting bearing and under dynamic conditions. To cope with the large-scale variations of oil film thickness in engineering applications, frequency-domain based models, being adaptive for different measurement ranges, are widely used. As an improvement, the time-domain approach can further expand the effective range, but suffers from decreased resolution in oil thickness measurement. To address these issues, this paper proposes a unified time-domain model for full-range measurement. First, a cluster of standard echoes with definite film thicknesses in a wide range are pre-constructed, and they are matched with measured echoes to find the most suitable oil film thickness. Further, an optimized interpolation is applied to both the constructed and the measured echoes for better resolution. Aiming for the lowest interpolation error, the windowed sinc function was employed optimally. Using a precision calibration rig, the proposed model was compared to the traditional frequency-domain and the time-domain models. The comparison demonstrates that the proposed model has a larger effective measurement range, covering those of all traditional frequency-domain models and with equal accuracies. In addition, the proposed model shows both a wider effective range and a higher resolution than that of the reference time-domain model. This work contributes to the development of on-line continuous measurement of oil film thickness variation at a large scale.

Large-area grain-boundary-free copper films for plasmonics

Ultrasmooth single-crystalline metallic thin films provide several key advantages for the fabrication of well-defined and high-resolution plasmonic nanostructures, particularly complex integrated nanocircuits. For this purpose, copper is generally regarded as a poor plasmonic material compared to gold and silver because of its notorious oxidation issues when subjected to air exposure. Here, we report on the use of large-area grain-boundary-free copper films grown epitaxially on sapphire substrates in combination with focused ion beam milling to pattern plasmonic nanostructures with superior quality. The copper surfaces prepared using a single-crystalline copper sputtering target exhibit a very low roughness without any grain boundaries for varying film thicknesses and a strong resistance to oxidation, overcoming the bottleneck in conventional copper film fabrication. Surface plasmon resonance measurements show that improved dielectric constants with higher conductivity and long-term stability can be achieved using the single-crystalline copper films. Plasmonic nanohole arrays patterned from these high-quality films are found to display a stronger field enhancement compared to those made from polycrystalline copper films, thus resulting in an enhanced extraordinary optical transmission performance. This study suggests that our fabrication method is ideally suited for applications in copper-based plasmonic and nanophotonic devices as well as integrated nanocircuits on a large scale.

Comparison of ALD-grown thin ZnO films with various thicknesses for NO2 sensing

Thin zinc oxide (ZnO) films of various thicknesses were characterized and compared in terms of their suitability to gas sensor applications. Applying atomic layer deposition (ALD), very thin ZnO films were deposited on quartz resonators, and their gas sensing properties were studied using a quartz crystal microbalance (QCM). The ZnO thin films were prepared using diethyl zinc and water as precursors. The crystal structure of the films was studied by X-ray diffraction (XRD), and their surface was observed by scanning electron microscopy (SEM) coupled with energy dispersive X-ray analysis (EDX) used to study the films’ composition. Films of thickness of ~10 – 80 nm were deposited on quartz resonators with Au electrodes and the QCM method was used to build highly sensitive gas sensors. These were tested for sensitivity to various concentrations of NO2. Although some of the films were very thin, they were sensitive to NO2 already at room temperature and could register reliably as low concentrations as 50 ppm, while the sorption was fully reversible and the sensors could be fully recovered. With the technology presented, manufacturing of QCM gas sensors is simple, fast and cost-effective, and suitable for application in energy-effective portable equipment for real-time monitoring of NO2 in the automotive industry or environmental protection.

Silver holographic gratings as substrates for surface-enhanced Raman scattering gas analysis.

This work is devoted to the investigation of the enhancement of Raman signals of nonadsorbed gases in the vicinity of corrugated metallic surfaces supporting propagating surface plasmon-polaritons (PSPPs). Simulation of the PSPP excitation efficiency on holographic gratings coated with silver films of various thicknesses at different groove heights was carried out. Verification showed good agreement between theory and experiment. Also, it was found that an increase of the PSPP excitation efficiency may not lead to an increase in the enhancement factor of Raman signals of gases located near the surface-enhanced Raman scattering active surface. For a holographic grating with a period of 667 nm, a groove height of 70 nm, and a silver film thickness of 30 nm coated with a protective ${{\rm Al}_2}{{\rm O}_3}$Al2O3 layer, the enhancement factor of Raman signals of nonadsorbed nitrogen molecules was $\sim{{\rm 4\cdot10}^3}$∼4⋅103.

Micro-Scale 2D Thermal Gradiometer

We investigate thin film thermocouples (TFTC) as thermal gradient sensors at the micro-scale and using thermocouples perpendicular to each other with separation distances of 20- $100~\mu \text{m}$ . Pairs of ${x}$ -direction and $y$ -direction thermocouples sense the thermal gradient while another calibrates the Seebeck coefficient to be S = 22.27 ± $0.01\mu$ V/K. The smallest detectable temperature difference is 10mK, and the sensitivity is 0.5/ $\mu$ m. The minimal Johnson-noise limited performance for thermocouple devices with typical integrated-circuit dimensions is 1.4 nV/ $\sqrt{{\mathrm {Hz}}}$ . Our design further reduces the number of leads L needed to measure N thermocouples to $L=N$ and allows direct measurement of thermal gradient instead of interpolation. Our design implements a local metal layer A at the gradiometer distinct from an extended metal layer B. This design is robust against any erroneous Seebeck contribution caused by minor film thickness variations in the extended leads. This device can be applied for embedded thermal management systems that require high resolution and rapid-response thermal management, such as stacked three-dimensional (3D) integrated circuits.

A thermal EHL investigation on plate-pin hinge pairs in silent chains using a narrow finite line contact

Purpose The purpose of this paper is to numerically study the variations of oil film pressure, thickness and temperature rise in the contact zone of plate-pin pair in silent chains. Design/methodology/approach A steady-state thermal elastohydrodynamic lubrication (EHL) model is built using a Ree–Eyring fluid. The contact between the plate and the pin is simplified as a narrow finite line contact, and the lubrication state is examined by varying the geometry and the plate speed. Findings With increase in the equivalent radius of curvature, the pressure peak and the central film thickness increase. Because the plate is very thin, the temperature rise can be neglected. Even when the influence of the rounded corner region is less, a proper design can beneficially increase the minimum film thickness at both edges of the plate. Under a low entraining speed, strong stress concentration results in close-zero film thickness at both edges of the plate. Originality/value This study reveals the EHL feature of the narrow finite line contact in plate-pin pairs for silent chains and will support the future works considering transient effect, surface features and wear.

Effect of plasmon–phonon interaction on the infrared reflection spectra of MgxZn1-xO/Al2O3 structures

The effect of plasmon–phonon interaction on the vibrational properties of the MgxZn1-xO films on anisotropic substrate is studied versus Mg content (x), film thickness (0.5–20 μm), free carrier concentration (1×1016–5×1018 cm−3) and damping coefficients using infrared reflection spectroscopy. The mathematical model with additive and phenomenological contribution of several oscillators to dielectric permittivity of MgxZn1-xO material was developed. The infrared reflection spectra were simulated in the range of “residual rays” of the film and the substrate for MgxZn1-xO/Al2O3 structures using self-consisted parameters of bulk ZnO, MgO and Al2O3 materials. Based on the Kramers–Kronig relationship, the frequency range where film reflectivity is sensitive to the variation of film doping and thickness was determined. The frequencies and damping coefficients of TO and LO modes of the oscillators, static and high-frequency dielectric permittivity for orientation E⊥c were obtained with high accuracy. Main attention was paid to the compositions which were in hexagonal structure. Experimental infrared reflection spectra were recorded for the films with x = 0.25 additionally doped with manganese and their simulation was performed based on the model developed. The free carrier concentration and mobility as well as film conductivity were determined. The results obtained showed the utility of infrared reflection spectroscopy for the investigation of textured alloy films. This non-destructive and contactless method can be implemented for the determination of optical properties of other semiconductor films.

Thickness determination of porous Pt cathode thin film capped by atomic layer-deposited alumina for low-temperature solid oxide fuel cells

This study investigated the effects of the apparent thickness of porous Pt cathode thin films thermo-mechanically stabilized by an atomic layer-deposited (ALD) alumina capping agent on effective electrical conductivity and electrochemical performance. Four-point probe resistance measurements revealed that a 120 nm-thick porous Pt film exhibits a relatively high electrical conductivity of 9.2 × 103 S/cm. Cathode reaction resistance measurements by means of alternating current impedance spectroscopy (ACIS) analysis show that ALD alumina can act as a thermo-mechanical stabilizer for a 120 nm-thick porous Pt cathode film. The ACIS analysis results for solid oxide fuel cells (SOFCs) with porous Pt cathode thin films of various thicknesses showed that a 120 nm-thick porous Pt cathode film is thermo-mechanically stabilized by the conformal coating of an ALD alumina capping agent. The iR-free polarization curves show that an ALD alumina-capped 120 nm porous Pt cathode film-embedded SOFC delivers ~65% higher power density than an ALD alumina-capped 480 nm-thick porous Pt cathode film-embedded SOFC.

Dynamics of instability in plasmonic response of nanostructured gold thin films on ambient ageing

Instability in the plasmonic response of nanostructured gold (Au) thin films on ambient ageing has been investigated. Different types of Au nanostructures (island, percolated, and continuous thin film) are obtained at the early stage of thin film growth by variation in film thickness using sputtering technique. Absorbance spectra of as-deposited island Au film shows a systematic blue-shift in the localized surface plasmon resonance (LSPR) peak position on ageing. The rate of blue-shift in the LSPR peak position is fitted with single-exponential decay function to analyse the dynamics of the plasmonic response. The as-deposited percolated Au film displays a transformation of broadened plasmonic response into a wavelength independent absorbance profile on ageing. The immersion of a new plasmonic band in the absorbance spectra is noted for continuous Au thin film on ageing. The change in plasmonic responses of nanostructured Au thin films on ambient ageing is found to be directly correlated with the re-organization of the surface morphology. Finally, ageing-induced solid-state dewetting and crystallization are found to be the main responsible processes of the underlying mechanism for morphological re-organizations, leading to change in the plasmonic response of the nanostructured Au thin films.

Microstructured Biodegradable Fibers for Advanced Control Delivery

AbstractBiodegradable polymers are increasingly employed at the heart of therapeutic devices. Particularly in the form of thin and elongated fibers, they offer an effective strategy for controlled release in a variety of biomedical configurations such as sutures, scaffolds, wound dressings, surgical or imaging probes, and smart textiles. So far however, the fabrication of fiber‐based drug delivery systems has been unable to fulfill significant requirements of medicated fibers such as multifunctionality, adequate mechanical strength, drug loading capability, and complex release profiles of multiple substances. Here, a novel paradigm in the design and fabrication of microstructured biodegradable fibers with tailored mechanical properties and capable of predefined release patterns from multiple reservoirs is proposed. Different biodegradable polymers compatible with the scalable thermal drawing process are identified, and their release properties as thin films of various thicknesses in the fiber form are experimentally investigated and modeled. Multimaterial microstructured fibers with predictable complex release profiles of potentially different substances are then designed and fabricated. Moreover, the tunability of the mechanical properties via tailoring the drawing process parameters is demonstrated, as well as the ability to weave such fibers. This work establishes a novel platform for biodegradable microstructured fibers for applications in implants, sutures, wound dressing, or tissue scaffolds.

Controllable phase transition temperature by regulating interfacial strain of epitaxial VO2 films

Modulation of the vanadium oxide epitaxial film metal insulator transition process through interfacial strain is a novel approach for controlling the properties of epitaxial vanadium oxide films, improving its scope for device applications. In this work, vanadium oxide films of various thickness were prepared and the effects of strains on the transition temperature were investigated. The vanadium oxide films exhibited compressive or tensile interfacial strain along their c-axis, the transition temperature varied in a range of 310–370 K owing to the effects of the interfacial strains. The tensile strain along the c-axis is correlated with an increase in transition temperature; however, the compressive strain along the c-axis leads to a decrease in transition temperature. The results show that the metal insulator transition process of vanadium oxide thin films can be regulated by interfacial strain. This work shows the feasibility of engineering the phase transition of epitaxial vanadium oxide films or the related devices through strain manipulating, which may be of great importance in practical applications.

Misalignment-Induced Micro-Elastohydrodynamic Lubrication in Rotary Lip Seals

In literature the lubrication of rotary lip seals is explained by hydrodynamic action on a microscopic scale. This theory assumes perfect concentricity between the seal and the shaft which in reality seldomly occurs. Focusing on the stern tube seals application, an analysis is performed on the phenomena distorting the axisymmetric operation of rotary lip seals. Radial and angular shaft misalignments together with pressure and temperature gradients have been modelled. The model predictions are validated using a dedicated setup. Additionally, applying the soft-EHL film thickness expressions at the asperity level, an equivalent film thickness along the circumferential direction is estimated. The Reynolds PDE is solved to predict the misalignment-induced hydrodynamic pressure build-up. The film thickness variation derived and accompanying non-uniform contact pressure distribution was shown to be sufficient for hydrodynamic action and, depending on the minimum film thickness, the hydrodynamic pressure build-up can exceed the static contact pressure. Additionally, significant differences were observed between the radial and angular misalignment configurations.

Printing 2D Conjugated Polymer Monolayers and Their Distinct Electronic Properties

AbstractRecently, 2D monolayer films of conjugated polymers have gained increasing attention owing to the preeminence of 2D inorganic films that exhibit unique optoelectronic and mechanical properties compared to their bulk analogs. Despite numerous efforts, crystallization of semiconducting polymers into highly ordered 2D monolayer films still remains challenging. Herein, a dynamic‐template‐assisted meniscus‐guided coating is utilized to fabricate continuous, highly ordered 2D monolayer films of conjugated polymers over a centimeter scale with enhanced backbone π–π stacking. In contrast, monolayer films printed on solid substrates confer upon the 1D fiber networks strong alkyl side‐chain stacking at the expense of backbone packing. From single‐layers to multilayers, the polymer π‐stacks change from edge‐on to bimodal orientation as the film thickness reaches ≈20 nm. Spectroscopic and cyclic voltammetry analysis reveals an abrupt increase in J‐aggregation and absorption coefficient and a decrease in bandgap and highest occupied molecular orbital level until critical thickness, possibly arising from the straightened polymer backbone. This is corroborated by an abrupt increase in hole mobility with film thickness, reaching a maximum of 0.7 cm2 V−1 s−1 near the critical thickness. Finally, fabrication of chemical sensors incorporating polymer films of various thicknesses is demonstrated, and an ultrahigh sensitivity of the ≈7 nm thick ultrathin film (bilayers) to 1 ppb ammonia is shown.

Luminescence behavior of CsI:Ag thin films

Thin films of Cesium iodide with silver doping in ratio of 500:1, 400:1 and 200:1 were grown by thermal evaporation. The structural, compositional and photoluminescence behavior of these films were studied. It was found that depending on the doping concentration, silver atoms either took up interstitial positions or displaced the cesium atom from the lattice. Based on whether silver existed in interstitial positions (low Ag doping) or had made substitutional doping (high Ag doping), various photoluminescence emission peaks appeared. The interplay of these emissions give an insight to the nature of CsI:Ag thin films and their potential use as a scintillator. The variation of film thickness for 200:1 doping was also studied to compare the changes in PL emission.

Magnetic Tunability of Permalloy Artificial Spin Ice Structures

This paper reports tunable ${\mathrm{Ni}}_{80}{\mathrm{Fe}}_{20}$ artificial spin ice structures of various geometrical lattice arrangements as a function of film thickness. We achieve the magnetic tunability by three distinct methods namely, geometrical arrangements of nanomagnetic elements in the form of square, kagome, and triangular lattices with the variation in film thickness (20, 30, and 50 nm) for each geometry and the applied field orientations. Magnetic force microscopy reveals that the nanoelements are in single-domain states, obeying the spin ice rules for the 20-nm-thick spin ice structures. A combination of nanoelements in single-domain and vortex states is observed with the increase in thickness up to 30 nm. For the 50-nm-thick elements, vortex and flux closure states are in evidence. Broadband ferromagnetic resonance spectroscopy establishes the presence of distinct resonant modes that are spatially localized in the nanomagnets of different orientations and, hence, can be controlled by the applied field orientations. The role of shape anisotropy on the static and dynamic properties is investigated systematically and complemented by extensive micromagnetic simulations. The results show great potential towards designing reconfigurable magnonic crystals for microwave filter applications.