About this Dataset

Broadband Electromagnetic Properties Of Engineered Flexible Absorber Materials

Figures and relevant data from the paper "Broadband Electromagnetic Properties of Engineered Flexible Absorber Materials" are found here . The paper was published on Advanced Materials Technologies in 2023. ABSTRACT: Flexible and stretchable materials have attracted significant interest for applications in wearable electronics and bioengineering fields. Recent developments also incorporate mounted and embedded microwave circuits, components, and systems with engineered flexible materials that operate over a broadband frequency range (~1 to 100 GHz). Here we demonstrate a simple, low-cost, flip-chip technique where flexible materials are placed on top of coplanar waveguide (CPW) transmission lines for material property measurement. We apply on-wafer error correction and de-embedding techniques to determine broadband electromagnetic properties of the material-loaded transmission line segments. Finite-element simulations of material-loaded devices were employed along with the broadband measurements to estimate the electromagnetic material properties. To demonstrate this technique, we fabricated flexible polydimethylsiloxane (PDMS) composites with varying concentrations of Barium Hexaferrite (BaM) nanoparticles for potential applications in electromagnetic shielding and quantified the complex permittivity and permeability of the composites up to 110 GHz using our broadband scattering-parameter measurements. We fit the frequency-dependent permeability to models describing the ferromagnetic resonance of barium hexaferrite (BaM) nanoparticles in PDMS and estimated the constituent nanoparticle properties using the Maxwell-Garnett mixing model. This study paves way to exploit a wide range of engineered materials in flexible, wearable, and biomedical electronics applications and presents a convenient methodology to extract important broadband electromagnetic properties for applications such as electromagnetic shielding.
Organization: Department of Commerce
Last updated: 2025-09-30T05:15:57.277623
Tags: barium-hexaferrite, flexible-electronics, microwave-circuits, pdms-composites, permeability, permittivity

Tables

Calculated And Extracted Imaginary Part Of Effective Permeability For Samples

@usgov.doc_gov_broadband_electromagnetic_properties_of_engine_2b07dfce.calculated_and_extracted_imaginary_part_of_effective_p_b6ff29a9

29.16 kB
514 rows
8 columns

CREATE TABLE calculated_and_extracted_imaginary_part_of_effective_p_b6ff29a9 (
  "frequency" VARCHAR,
  "permittivity" VARCHAR,
  "frequency_1" VARCHAR,
  "permittivity_1" VARCHAR,
  "permittivity_2" VARCHAR,
  "permittivity_3" VARCHAR,
  "permittivity_4" VARCHAR,
  "permittivity_5" VARCHAR
);

Calculated And Extracted Real Part Of Effective Permeability For Samples

@usgov.doc_gov_broadband_electromagnetic_properties_of_engine_2b07dfce.calculated_and_extracted_real_part_of_effective_permea_455b3425

29.67 kB
514 rows
8 columns

CREATE TABLE calculated_and_extracted_real_part_of_effective_permea_455b3425 (
  "frequency" VARCHAR,
  "permittivity" VARCHAR,
  "frequency_1" VARCHAR,
  "permittivity_1" VARCHAR,
  "permittivity_2" VARCHAR,
  "permittivity_3" VARCHAR,
  "permittivity_4" VARCHAR,
  "permittivity_5" VARCHAR
);

Calculated And Measured Distributed Circuit Parameters - Inductance Per Unit Length

@usgov.doc_gov_broadband_electromagnetic_properties_of_engine_2b07dfce.calculated_and_measured_distributed_circuit_parameters_274ca570

24.56 kB
641 rows
8 columns

CREATE TABLE calculated_and_measured_distributed_circuit_parameters_274ca570 (
  "frequency" VARCHAR,
  "distributed_inductance" VARCHAR,
  "frequency_1" VARCHAR,
  "distributed_inductance_1" VARCHAR,
  "distributed_inductance_2" VARCHAR,
  "distributed_inductance_3" VARCHAR,
  "distributed_inductance_4" VARCHAR,
  "distributed_inductance_5" VARCHAR
);

Calculated And Measured Distributed Circuit Parameters - Resistance Per Unit Length

@usgov.doc_gov_broadband_electromagnetic_properties_of_engine_2b07dfce.calculated_and_measured_distributed_circuit_parameters_e7fca378

53.9 kB
641 rows
8 columns

CREATE TABLE calculated_and_measured_distributed_circuit_parameters_e7fca378 (
  "frequency" VARCHAR,
  "distributed_resisitance" VARCHAR,
  "frequency_1" VARCHAR,
  "distributed_resisitance_1" VARCHAR,
  "distributed_resisitance_2" VARCHAR,
  "distributed_resisitance_3" VARCHAR,
  "distributed_resisitance_4" VARCHAR,
  "distributed_resisitance_5" VARCHAR
);

Calculated Imaginary Effective Permittivity (εeff) Vs. Frequency

@usgov.doc_gov_broadband_electromagnetic_properties_of_engine_2b07dfce.calculated_imaginary_effective_permittivity_eff_vs_frequency

47.22 kB
641 rows
11 columns

CREATE TABLE calculated_imaginary_effective_permittivity_eff_vs_frequency (
  "frequency" VARCHAR,
  "permittivity" VARCHAR,
  "frequency_1" VARCHAR,
  "permittivity_1" VARCHAR,
  "permittivity_2" VARCHAR,
  "permittivity_3" VARCHAR,
  "permittivity_4" VARCHAR,
  "permittivity_5" VARCHAR,
  "permittivity_6" VARCHAR,
  "permittivity_7" VARCHAR,
  "permittivity_8" VARCHAR
);

Calculated Real Effective Permittivity (εeff) Vs. Frequency

@usgov.doc_gov_broadband_electromagnetic_properties_of_engine_2b07dfce.calculated_real_effective_permittivity_eff_vs_frequency

31.04 kB
641 rows
11 columns

CREATE TABLE calculated_real_effective_permittivity_eff_vs_frequency (
  "frequency" VARCHAR,
  "permittivity" VARCHAR,
  "frequency_1" VARCHAR,
  "permittivity_1" VARCHAR,
  "permittivity_2" VARCHAR,
  "permittivity_3" VARCHAR,
  "permittivity_4" VARCHAR,
  "permittivity_5" VARCHAR,
  "permittivity_6" VARCHAR,
  "permittivity_7" VARCHAR,
  "permittivity_8" VARCHAR
);

Differential Inductance Vs. Superstrate Permeability

@usgov.doc_gov_broadband_electromagnetic_properties_of_engine_2b07dfce.differential_inductance_vs_superstrate_permeability

2.73 kB
28 rows
2 columns

CREATE TABLE differential_inductance_vs_superstrate_permeability (
  "permeability" VARCHAR,
  "differential_inductance" VARCHAR
);

Differential Substrate Capacitance Vs. Substrate Permittivity

@usgov.doc_gov_broadband_electromagnetic_properties_of_engine_2b07dfce.differential_substrate_capacitance_vs_substrate_permittivity

2.69 kB
21 rows
2 columns

CREATE TABLE differential_substrate_capacitance_vs_substrate_permittivity (
  "er_sub_1" DOUBLE  -- Er,sub -1,
  "csub_cint_cint" DOUBLE
);

Differential Superstrate Capacitance Vs. Superstrate Permittivity

@usgov.doc_gov_broadband_electromagnetic_properties_of_engine_2b07dfce.differential_superstrate_capacitance_vs_superstrate_pe_cb72fd80

2.69 kB
20 rows
2 columns

CREATE TABLE differential_superstrate_capacitance_vs_superstrate_pe_cb72fd80 (
  "er_sup_1" BIGINT,
  "csup_cair_cair" DOUBLE
);

Estimates For The Free-space Attenuation Constant For Engineered BaM-PDMS Composites

@usgov.doc_gov_broadband_electromagnetic_properties_of_engine_2b07dfce.estimates_for_the_free_space_attenuation_constant_for__cdc6bb17

25.41 kB
641 rows
5 columns

CREATE TABLE estimates_for_the_free_space_attenuation_constant_for__cdc6bb17 (
  "frequency" VARCHAR,
  "attenuation" VARCHAR,
  "attenuation_1" VARCHAR,
  "attenuation_2" VARCHAR,
  "attenuation_3" VARCHAR
);

Frequency Dependence Of The Capacitance Per Unit Length

@usgov.doc_gov_broadband_electromagnetic_properties_of_engine_2b07dfce.frequency_dependence_of_the_capacitance_per_unit_length

21.26 kB
641 rows
9 columns

CREATE TABLE frequency_dependence_of_the_capacitance_per_unit_length (
  "frequency" VARCHAR,
  "capacitance" VARCHAR,
  "frequency_1" VARCHAR,
  "capacitance_1" VARCHAR,
  "capacitance_2" VARCHAR,
  "capacitance_3" VARCHAR,
  "capacitance_4" VARCHAR,
  "capacitance_5" VARCHAR,
  "capacitance_6" VARCHAR
);

Frequency Dependence Of The Conductance Per Unit Length (LDUT)

@usgov.doc_gov_broadband_electromagnetic_properties_of_engine_2b07dfce.frequency_dependence_of_the_conductance_per_unit_length_ldut

37.26 kB
641 rows
9 columns

CREATE TABLE frequency_dependence_of_the_conductance_per_unit_length_ldut (
  "frequency" VARCHAR,
  "capacitance" VARCHAR,
  "frequency_1" VARCHAR,
  "capacitance_1" VARCHAR,
  "capacitance_2" VARCHAR,
  "capacitance_3" VARCHAR,
  "capacitance_4" VARCHAR,
  "capacitance_5" VARCHAR,
  "capacitance_6" VARCHAR
);