Michael Lanagan

Michael Lanagan

Penn State University

H-index: 59

North America-United States

About Michael Lanagan

Michael Lanagan, With an exceptional h-index of 59 and a recent h-index of 33 (since 2020), a distinguished researcher at Penn State University,

His recent articles reflect a diverse array of research interests and contributions to the field:

Effect of the Boson Peak and the Ionic Resonance in the Dielectric Properties of Silicate Materials at mm-Wave and THz Frequencies

Dielectric characterization of materials at 5G mm-wave frequencies

Novel Glass Material with Low Loss and Permittivity for 5G/6G Integrated Circuits

(K0.5Bi0.5)(Mg1/3Nb2/3)O3‐modified Sr0.7Bi0.2TiO3 lead‐free ceramics for energy storage applications

Broadband and Tunable Microwave Absorption Properties from Large Magnetic Loss in Ni–Zn Ferrite

Enhanced Dielectric Breakdown Reliability of Glass with Polymer Coating

Broadband Dielectric Characterization of Glasses and Other Silicates up to the THz Frequencies

Synthesis, dielectric and impedance spectroscopy study of temperature stable Ta2O5 modified 0.85 BaTiO3-0.15 Bi (Mg0. 5Ti0. 5) O3 ceramics

Michael Lanagan Information

University

Penn State University

Position

___

Citations(all)

13610

Citations(since 2020)

5598

Cited By

10210

hIndex(all)

59

hIndex(since 2020)

33

i10Index(all)

215

i10Index(since 2020)

102

Email

University Profile Page

Penn State University

Top articles of Michael Lanagan

Effect of the Boson Peak and the Ionic Resonance in the Dielectric Properties of Silicate Materials at mm-Wave and THz Frequencies

Authors

Rocio Rodriguez-Cano,Michael T Lanagan

Journal

Materials Research Bulletin

Published Date

2024/4/18

In this paper, a broadband measurement of the dielectric properties of silicates has been done to cover the seldom characterized mm-wave spectrum and the low THz spectrum. The dielectric properties, i.e. loss and permittivity, show a frequency independent response up to approximately 40 GHz and the loss monotonically increases to the THz frequency range. Two resonance peaks appear at THz frequencies: the first is the boson peak, and the second one corresponds to the ionic resonance of the network former, which in this case is silicon. Even though the materials belong to different groups in the silicate family (crystalline and non-crystalline, with different levels of purity), they seem to have the same overall tendency in the dielectric properties. Argand plots are used for the first time at THz frequencies to provide physical insight into the boson peak and ionic resonance. The complex plane analysis reveals …

Dielectric characterization of materials at 5G mm-wave frequencies

Authors

Rocio Rodriguez-Cano,Steven Perini,Michael Lanagan

Published Date

2024/1

The development of the next-generation 5G wireless networks depends critically on the engineering of optimized high-frequency devices, employing dielectric materials. This work presents a comprehensive broadband dielectric characterization of polymers, ceramics and glasses from 5 GHz until 115 GHz.

Novel Glass Material with Low Loss and Permittivity for 5G/6G Integrated Circuits

Authors

Rocio Rodriguez-Cano,Michael Lanagan,Nicholas L Clark,John C Mauro

Journal

IEEE publication

Published Date

2024/3

A new borosilicate glass with lower loss and permittivity than any commercial glass has been proposed in this contribution as a substrate or interposer for mm-wave and THz integrated electronics. The glass is composed of a microstructure enclosing high-purity boron rich areas and silicon rich areas. This phase-separated areas are several orders of magnitude smaller than the wavelength at 1 THz.

(K0.5Bi0.5)(Mg1/3Nb2/3)O3‐modified Sr0.7Bi0.2TiO3 lead‐free ceramics for energy storage applications

Authors

Murad Ali Khan,Abdul Manan,Maqbool Ur Rehman,Sami Ullah Khan,Shah Faisal,Arshad Hussain Wazir,Faisal Alresheedi,Michael T Lanagan

Journal

International Journal of Applied Ceramic Technology

Published Date

2024/3

In the present study, Sr0.7Bi0.2TiO3 is mixed with [(K0.5Bi0.5)(Mg1/3Nb2/3)O3] to form a solid solution of [(1 − x)SBT–x(KB)(MNb), x = 0.02, 0.04, 0.06, 0.1]. From the XRD results, it is indicated that KB is the main substituent for SBT ceramic at the A‐site. The breakdown strength (BDS) of ceramic gradually increases with an increase in doping content and achieves a high value of 280 kV/cm for x = 0.06. In addition, the 0.94SBT–0.06(KB)(MNb) ceramic shows excellent temperature stability (−55 to 140°C), a high recoverable energy density (Wd)—2.6 J/cm3, and an efficiency (η)—88% at 280 kV/cm. Therefore, 0.94SBT–0.06(KB)(MNb) ceramic is one of the possible materials for energy storage capacitor applications.

Broadband and Tunable Microwave Absorption Properties from Large Magnetic Loss in Ni–Zn Ferrite

Authors

Subrata Ghosh,Shweta Sharma,Wenjie Li,Amin Nozariasbmarz,Lavanya Raman,Na Liu,Gagan K Goyal,Yu Zhang,Steven E Perini,Michael Lanagan,Shashank Priya,Bed Poudel

Journal

Advanced Materials Technologies

Published Date

2024/1/31

Highly effective electromagnetic (EM) wave absorber materials with strong reflection loss (RL) and a wide absorption bandwidth (EBW) in gigahertz (GHz) frequencies are crucial for advanced wireless applications and portable electronics. Traditional microwave absorbers lack magnetic loss and struggle with impedance matching, while ferrites are stable, exhibit excellent magnetic and dielectric losses, and offer better impedance matching. However, achieving the desired EBW in ferrites remains a challenge, necessitating further composition design. In this study, impedance matching is successfully enhanced and EBW in Ni–Zn ferrite is broadened by successive doping with Mn and Co , without incorporation of any polymer filler. It is found that Ni0.4Co0.1Zn0.5Fe1.9Mn0.1O4 material exhibits exceptional EM wave absorption, with a maximum RL of −48.7 dB. It also featured a significant EBW of 10.8 GHz …

Enhanced Dielectric Breakdown Reliability of Glass with Polymer Coating

Authors

Mengxue Yuan,Cesar A Nieves,Mohamed E Eltantawy,Eugene Furman,Emily Schrock,Michael T Lanagan

Published Date

2023/6/25

Low-alkali boroaluminosilicate glasses have attracted increasing attention in high-temperature dielectric applications due to their excellent dielectric, mechanical, and thermal properties. While the breakdown strength could be enhanced by reducing alkali concentration, we demonstrate an effective approach to improve the breakdown reliability of these low-alkali glasses by selectively coating a thin layer of polymers on anodes. It is shown that the dielectric breakdown of the glasses is dominantly determined by the magnified electric field in the depletion layer; that employment of a thin polymer coating on the anode side substantially mitigates the local field enhancement and improves the high-field reliability of the glass-polymer laminate. Cathode side polymer coating improves the laminate performance as well.

Broadband Dielectric Characterization of Glasses and Other Silicates up to the THz Frequencies

Authors

Rocio Rodriguez-Cano,Michael Lanagan,Steven Perini,Xiaojiang Li,Venkatraman Gopalan

Published Date

2023

The dielectric characterization of silicate materials up to 2.5 THz is presented in this paper, to try to fill up the THz gap between electrical and optical measurements. Several measurement techniques have been employed to provide a broadband response. Materials in the silicate family can be classified as amorphous or crystalline. The internal structure, as well as the composition of the material, influences the dielectric properties. The loss of a material depends on its crystallinity, with higher crystallinity exhibiting lower loss.

Synthesis, dielectric and impedance spectroscopy study of temperature stable Ta2O5 modified 0.85 BaTiO3-0.15 Bi (Mg0. 5Ti0. 5) O3 ceramics

Authors

Abdul Manan,Gul Shah Jahan,Maqbool Ur Rehman,Michael T Lanagan

Journal

Chemical Physics Impact

Published Date

2023/12/1

In the present study, 0.85BaTiO3–0.15Bi(Mg0.5Ti0.5)O3-xTa2O5 (x = 0, 0.01, 0.015, 0.02, 0.025) processed via the conventional mix oxide route. The phase, microstructure, and dielectric properties were studied. Single perovskite phase developed and studied via XRD. A Dense microstructure for each composition was developed with the pseudo-crystal structure. Low grain size <3 μm is achieved for each composition. A high dielectric constant (εr) > 1000 and low dielectric loss (tanδ <2.5 %) is obtained for x ≤ 0.020, with high stability over a broad range of temperatures (<0 °C to 180 °C). These compositions are considered to be suitable for designing X9R capacitors. In complex impedance analysis, the decreasing value of the bulk impedance upon increasing the temperature revealed the negative temperature coefficient of resistance (NTCR) behavior. The small conductivity and high activation energy value for x …

Wideband All-Dielectric Reflector at 100 GHz for 6G Communications

Authors

Rocio Rodriguez-Cano,Michael Lanagan

Published Date

2023/7/23

Power-efficient systems are required for 6G communications. Part of a window real-state can be used as placement of a reflecting metasurface, which can provide coverage to users in scenarios, where there are no line-of-sight links. In this contribution, we propose a wideband all-dielectric metasurface at 100 GHz that consists of alumina posts on plastic and does not depend on the angle of incidence. The design has been manufactured and measured, with good agreement between measurements and simulations.

Broadband characterization of silicate materials for potential 5G/6G applications

Authors

Rocio Rodriguez-Cano,Steven E Perini,Brian M Foley,Michael Lanagan

Journal

IEEE Transactions on Instrumentation and Measurement

Published Date

2023/3/13

This article provides a broadband dielectric characterization of different silicate substrates up to 115 GHz, to fill the gap in the properties of different kinds of glasses in a broad part of the mm-wave spectrum. Both the internal structure (crystalline or amorphous) and the chemistry of the substrates influence the permittivity and loss tangent of the material. Quartz and sapphire are crystalline materials that exhibit a low loss in the mm-wave frequency range. Amorphous silicates generally have higher loss values than crystalline materials, and within the glasses, the level of impurities added also affects the dielectric loss. Several characterization techniques have been employed to cover a broad frequency band. The limitations of the different characterization techniques are also included. Once the dielectric properties of substrates are characterized, a metasurface has been designed and fabricated at 100 GHz to increase …

Exploring the dielectric polarization and ionic conduction mechanisms in sodium-containing silicate and borosilicate glasses

Authors

Cesar A Nieves,Michael T Lanagan

Journal

Journal of Non-Crystalline Solids

Published Date

2023/10/1

The dielectric and electrical behavior of a sodium silicate glass (soda-lime-silica; SLS) and a sodium borosilicate glass (D263T) are systematically and comprehensively characterized by a combination of ac and dc techniques at various temperatures and electric fields. This study reveals that Na+ migration primarily influences the dielectric loss, energy efficiency, and leakage current in these glasses, with a less detrimental effect in D263T due to its higher activation energy for ionic conduction. Moreover, this study identifies an additional relaxation mechanism contributing to the leakage current in D263T which was not observed in SLS. The origin of this mechanism has not been extensively explored, and it is believed to arise from a more limited migration of Na+ ions associated with the short migration and accumulation of a second and less mobile ion near the anode.

Characterization of AZ31/HA biodegradable metal matrix composites manufactured by rapid Microwave Sintering

Authors

Shivani Gupta,Apurbba Kumar Sharma,Dinesh Agrawal,Michael T Lanagan,Elzbieta Sikora,Inderdeep Singh

Journal

Materials

Published Date

2023/2/25

This study reports the development of magnesium alloy/hydroxyapatite-based biodegradable metal matrix composites (BMMCs) through rapid microwave sintering. Magnesium alloy (AZ31) and hydroxyapatite powder were used in four compositions 0, 10, 15 and 20% by weight. Developed BMMCs were characterized to evaluate physical, microstructural, mechanical and biodegradation characteristics. XRD results show Mg and HA as major phases and MgO as a minor phase. SEM results correlate with the XRD findings by identifying the presence of Mg, HA and MgO. The addition of HA powder particles reduced density and increased the microhardness of BMMCs. The compressive strength and Young’s modulus increased with increasing HA up to 15 wt.%. AZ31-15HA exhibited the highest corrosion resistance and lowest relative weight loss in the immersion test for 24 h and weight gain after 72 and 168 h due to the deposition of Mg(OH)2 and Ca(OH)2 layers at the sample surface. XRD analysis of the AZ31-15HA sintered sample after an immersion test was carried out and these results revealed the presence of new phases Mg(OH)2 and Ca(OH)2 that could be the reason for enhancing the corrosion resistance. SEM elemental mapping result also confirmed the formation of Mg(OH)2 and Ca(OH)2 at the sample surface, which acted as protective layers and prevented the sample from further corrosion. It showed that the elements were uniformly distributed over the sample surface. In addition, these microwave-sintered BMMCs showed similar properties to the human cortical bone and help bone growth by depositing apatite layers at the surface …

Dielectric Resonance Modes Effect on Enhancing the Rx-Sensitivity in Magnetic Resonance Imaging (MRI) RF Coil

Authors

Parisa Lotfi,Navid P Gandji,Michael Lanagan,Qing X Yang

Published Date

2023/7/23

Dielectric resonators with Ultra-High Dielectric Constant (uHDC) materials possess intrinsic resonance modes which can be employed in the design of transceiver coils for magnetic resonance imaging (MRI) applications. The resonance modes and conditions of the uHDC discs were studied through computer simulations. We compared the magnetic field and Rx-sensitivity when employing cylindrical uHDC discs at both resonant and non-resonant conditions. We showed in this work, to achieve the maximum focusing of the magnetic field into the phantom, the design with uHDC material should operate around the first TE01δ mode and lower than the second mode with the highest permittivity.

Relaxation dynamics of water in the vicinity of cellulose nanocrystals

Authors

Inseok Chae,Luis E Paniagua-Guerra,Mica L Pitcher,Roya Koshani,Mengxue Yuan,Yen-Ting Lin,Jongcheol Lee,Steven E Perini,Amir Sheikhi,Bladimir Ramos-Alvarado,Michael T Lanagan,Seong H Kim

Journal

Cellulose

Published Date

2023/9

Water molecules near cellulose nanocrystals (CNCs; produced via the sulfuric acid-catalyzed hydrolysis of wood pulp) are believed to relax slower than those in the bulk liquid, which may result in unique properties of CNC aqueous dispersions. This study analyzed the polarization behavior of water molecules in CNC aqueous dispersions and other reference samples using a dielectric relaxation spectroscopy (DRS) technique in the microwave frequency range (0.2–20 GHz). As the CNC concentration increases, two slow relaxation components become prominent. The comparison with DRS data of aqueous dispersions of nanoporous silica, polyvinyl alcohol (PVA), and hairy CNC (HCNC) with amorphous chains protruding from both ends suggested that these slow relaxation modes of water near CNC surfaces cannot be attributed to direct hydrogen bonding interactions with the hydroxyl (OH) groups exposed and …

Dielectric characterization of paraelectric particle-loaded polymer matrix composites and commercial photoresins at W-band frequencies

Authors

Michael Forstmeier,Mengxue Yuan,Steve Perini,Michael Lanagan,Brian Foley

Journal

Heliyon

Published Date

2023/2/1

This work presents W-band (75–110 GHz) dielectric characterization of commercially available photoresins in their neat state, as well as in polymer matrix composite (PMC) mixtures with various loading concentrations of the paraelectric barium strontium titanate (BST). Due to difficulties 3D printing the BST-loaded PMC resins detailed within, a custom curing and casting process was used to fabricate testable PMC samples, which were synthesized to demonstrate the dielectric functionalization of the underlying polymer matrix. Dielectric characterization of the PMCs confirmed the functionalization of our composites when compared to the commercial photoresins. For example, a volumetric loading concentration of 25 vol % BST increased the dielectric permittivity (εr) from 2.78 to 9.60 and the loss tangent (tanδ) from 0.022 to 0.114. These results indicate that the realization of UV-cured photoresins with "designer …

Ion migration study in acid‐leached soda–lime–silica glass by thermally stimulated depolarization current analysis

Authors

Cesar A Nieves,Andrew L Ogrinc,Seong H Kim,Eugene Furman,Michael T Lanagan

Journal

Journal of the American Ceramic Society

Published Date

2023/7

Ionic conductivity in silicate glasses is a major issue in the energy sector due to its detrimental effect on electric energy generation and storage and has received increasing attention over the past years. In this study, surface modification of soda–lime–silica (SLS) float glass via acid‐leaching treatment (pH 1) was implemented to understand the impact on ionic transport. The acid‐leaching treatment created a sodium‐depleted “silica‐like” structure in the near‐surface region with depths of 110 ± 20 nm for the air‐side and 93 ± 2 nm for the tin‐side of the SLS glass. Using the thermally stimulated depolarization current technique, two thermally activated relaxation peaks were found to be associated with different ion migration mechanisms. The first peak (P1) with activation energy of ∼0.85 eV was attributed to dc conduction of Na+ ions through the glass bulk. A second overlapping peak (P2) at a higher temperature was …

Dielectric polarizability of SiO2 in niobiosilicate glasses

Authors

Katy S Gerace,Michael T Lanagan,John C Mauro

Journal

Journal of the American Ceramic Society

Published Date

2023/8

Understanding the mechanisms contributing to dielectric properties of glasses is critical for designing new compositions for microwave frequency applications. In this work, dielectric permittivity was measured using a cavity perturbation technique at 10 GHz for a series of niobiosilicate glasses with the compositions (100‐2x)SiO2‐ xNb2O5‐ xLi2O where x = 32.5, 30, 25, and 15 mol%. Permittivity measurements and glass compositions were used to calculate the polarizability of each cation‐anion unit in the glass network using the Clausius‐Mossotti equation. The SiO2 polarizability in niobiosilicates was calculated to be 6.16 Å3, which is much higher than the SiO2 polarizability in fused silica glass (5.25 Å3), alkali modified silicates (5.37 Å3), and aluminosilicates (5.89 Å3). The increasing trend in SiO2 polarizability is attributed to the disruption in the connectivity of the SiO4 tetrahedral network as it accommodates …

Analysis of dielectric breakdown failure and electric field distribution in polymer-coated boroaluminosilicate glass through simulation and experimental measurements

Authors

Cesar A Nieves,Mengxue Yuan,Eugene Furman,Emily Schrock,Michael T Lanagan

Published Date

2023/6/25

Parylene C coating is used to mitigate local electric field intensification in high-alkali BAS (Schott D263T) glass and low-alkali BAS glass (Schott AF32) with the aim of improving the dielectric breakdown characteristics. The breakdown events in these glasses were analyzed using a two-parameter Weibull probability distribution. Our findings demonstrate that the parylene C coating effectively mitigates the intensified electric field and reduced the risk of surface damage from thermal shock. Consequently, the weakest breakdown events are shifted to higher breakdown voltages and longer times, leading to a significant increase in the Weibull modulus. For anode-coated D263T glass, the Weibull modulus increases from 19.90 to 45.88 (a 130.55% enhancement), while for anode-coated AF32 glass, the increase is from 3.82 to 28.53 (a 646.86% enhancement), compared to uncoated glass. Although cathode-coated glass …

A Fast Indoor Coverage Prediction Scheme at 60 GHz Based on Image Processing, Geometrical Optics, and Transport Theory

Authors

Ziheng Fu,Swagato Mukherjee,Michael T Lanagan,Prasenjit Mitra,Tarun Chawla,Ram M Narayanan

Published Date

2023/7/23

3D ray tracing is used to accurately predict path loss, phase, and Received Signal Strength for various environments. In this paper, we develop a fast and approximate prediction scheme for indoor path loss using digital image processing, geometrical optics and transport theory. The proposed algorithm is tested in an apartment environment, and its performance is compared against a commercial 3D ray tracing software suite, Wireless InSite®.

Transient behavior of electrical conductivity in low‐density polyethylene in the presence of acetophenone

Authors

Hossein Hamedi,Roger C Walker,WH Hunter Woodward,Ramakrishnan Rajagopalan,Eugene Furman,Michael T Lanagan

Journal

Journal of Applied Polymer Science

Published Date

2022/4/10

The transient current in low‐density polyethylene (LDPE) is studied, particularly in the presence of the small organic molecule acetophenone (ACP). Crosslinked LDPE is used extensively in high‐voltage power transmission, and acetophenone is a common byproduct of the crosslinking chemistry. Time‐dependent current measurements of LDPE with and without ACP soaked into the polymer as well as at one or both electrodes are performed by applying step voltages. The results demonstrate that the presence of ACP causes a deviation in the predicted power‐law current decay, suggesting that electron and hole injection at the anode and cathode, respectively, are affected by the presence of this small organic molecule. ACP contributes both to the ionic conduction and charge hopping mechanism. The charge mobility depends on the applied electric field and the sample thickness. The results suggests that the …

See List of Professors in Michael Lanagan University(Penn State University)

Michael Lanagan FAQs

What is Michael Lanagan's h-index at Penn State University?

The h-index of Michael Lanagan has been 33 since 2020 and 59 in total.

What are Michael Lanagan's top articles?

The articles with the titles of

Effect of the Boson Peak and the Ionic Resonance in the Dielectric Properties of Silicate Materials at mm-Wave and THz Frequencies

Dielectric characterization of materials at 5G mm-wave frequencies

Novel Glass Material with Low Loss and Permittivity for 5G/6G Integrated Circuits

(K0.5Bi0.5)(Mg1/3Nb2/3)O3‐modified Sr0.7Bi0.2TiO3 lead‐free ceramics for energy storage applications

Broadband and Tunable Microwave Absorption Properties from Large Magnetic Loss in Ni–Zn Ferrite

Enhanced Dielectric Breakdown Reliability of Glass with Polymer Coating

Broadband Dielectric Characterization of Glasses and Other Silicates up to the THz Frequencies

Synthesis, dielectric and impedance spectroscopy study of temperature stable Ta2O5 modified 0.85 BaTiO3-0.15 Bi (Mg0. 5Ti0. 5) O3 ceramics

...

are the top articles of Michael Lanagan at Penn State University.

What is Michael Lanagan's total number of citations?

Michael Lanagan has 13,610 citations in total.

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