Dielectric Constant Materials Research Articles

The Effect of Fluorinated Benzothiadiazole-dicyanovinyl Acceptors on the Dielectric Constants of Organic Photovoltaic Materials

The Effect of Fluorinated Benzothiadiazole-dicyanovinyl Acceptors on the Dielectric Constants of Organic Photovoltaic Materials

Design and analysis of hetero-dielectric Junctionless-TFET(JL-TFET) with N+ pocket as label free biosensors

This paper includes sensitivity assessment of label-free biosensors using hetero dielectric Junctionless-TFET (HD-JL-TFET) thorough TCAD simulator. The fundamental structure, operation and design of a Junctionless-TFET (HD-JL-TFET) as biosensor are investigated in this paper. For the purpose of detecting the biomolecule, a nano-gap is added close to the source end between the gate and channel. To test the sensing potential, we adjusted the charge density and material dielectric constant (K) by comprehensive calibrated device simulation. For several biomolecules, the device’s sensitivity was examined as surface potential, electron tunnelling rate, and conduction-valence band edge fluctuation. Additionally, the Id versus VGS features, the sensitivity to the drain current, and the ION/IOFF fluctuation are also examined. By contrasting neutral or charged biomolecules using various dielectric constants, the sensitivity characteristics of positive, negative, and neutral biomolecules are examined. The development of biosensors, which enable the rapid and precise detection of multiple biomolecules, has revolutionized the field of bioanalysis.

Electrode process of mobile ions in generating space-charge polarization.

Macroscopic dipole moments formed in electrolytic cells influence dielectric properties of the cells, and their magnitudes can be quantified by dielectric spectroscopy. We analyze the dielectric spectra observed for dilute electrolytic cells in low-frequency regions from two perspectives: space-charge polarization and diffuse double layers on the electrodes. The difference between the two polarization phenomena is characterized by the effective dielectric constant and the kinetic parameter introduced in the Poisson-Nernst-Planck model. The analytical results indicate that the generation of space-charge polarization is attributed to the kinetic process of mobile ions replacing solvent molecules on the electrode surface. This is an experimental confirmation of the formation process of macroscopic dipole moment due to space-charge polarization and its practical contribution to the dielectric constant of material.

Rapid microwave-assisted synthesis and characterization of a novel CuCoTe nanocomposite material for optoelectronic and dielectric applications.

In the realm of nanomaterial research, copper telluride and cobalt telluride have individually attracted considerable attention owing to their unique properties and potential applications. However, there exists a notable gap in the literature when it comes to the exploration of composite materials derived from these elements. From this point of view, a ternary CuCoTe nanocomposite was prepared using the microwave synthesis method. Various characterizations were performed by varying the power and irradiation time. X-Ray diffraction study and transmission electron microscopy analysis confirmed the polycrystalline nature of the material with Cu2Te and CoTe hexagonal phases. Field emission scanning electron microscopy images reveal nanoparticle-like morphology, which remains unchanged even when the time of irradiation increases. In addition, the nanoparticle size of the material lies in the range of 30-39 nm. The differential scanning calorimetry inferred various exothermic and endothermic peaks. Meanwhile, the optical analysis from the UV-visible study shows the red-shifted absorbance, enabling the material for semiconductor and photovoltaic devices. Furthermore, the optical bandgap of the material varies in the range from 2.45 to 3.61 eV, which reveals the tuneable bandgap desiring the material for various optoelectronic applications. The frequency-temperature-dependent dielectric study gives results for dielectric parameters, conductivity, and impedance behaviour. The material's dielectric constant, dielectric loss, and AC conductivity enhance with the increase in temperature. This behaviour of the material broadens the area of applicability in energy storage devices.

Molecular Design of Layered Hybrid Silver Bismuth Bromine Single Crystal for Ultra-Stable X-Ray Detection With Record Sensitivity.

Nowadays, weak interlayer coupling and unclear mechanism in layered hybrid silver bismuth bromine (LH-AgBiBr) are the main reasons for limiting its further enhanced X-ray detection sensitivity and stability. Herein, the design rules for LH-AgBiBr and its influence on X-ray detection performance are reported for the first time. Although shortening amine size can enhance interlayer coupling, its detection performance is severely hampered by its easier defect formation caused by enlarged micro strain. In contrast, an appropriate divalent amine design endows the material with improved interlayer coupling and released micro strain, which benefits crystal stability and mechanical hardness. Another contribution is to increase material density and dielectric constant; thus, enhancing X-ray absorption and carrier transport. Consequently, the optimized parallel device based on BDA2 AgBiBr8 achieves a record sensitivity of 2638 µC Gyair -1 cm-2 and an ultra-low detection limit of 7.4 nGyair s-1 , outperforming other reported LH-AgBiBr X-ray detectors. Moreover, the unencapsulated device displays remarkable anti-moisture, anti-thermal (>150 °C), and anti-radiation (>1000 Gyair ) endurance. Eventually, high-resolution hard X-ray imaging is demonstrated by linear detector arrays under a benign dose rate (1.63 µGyair s-1 ) and low external bias (5V). Hence, these findings provide guidelines for future materials design and device optimization.

Low‐k dielectric materials derived from ZSM‐5 zeolite

AbstractLow‐k dielectric materials were prepared by sintering ZSM‐5 zeolite powder compacts at temperatures ranged 1200–1300°C, and the microwave dielectric characteristics were investigated together with the structure evolution during sintering. It was failed to obtain ZSM‐5 ceramics by high temperature sintering because the densification could never occur below the tolerable temperature and the ordered porous structure completely collapsed above the tolerable temperature. The structure changed from ZSM‐5 zeolite to SiO2‐Al2O3 glass at 1240°C, and finally to SiO2‐based cristobalite ceramics above 1275°C. A low dielectric constant (2.63‐2.78) combined with low dielectric loss (< 0.0005 at 18 GHz) and small temperature coefficient of resonant frequency (varied from ‐18.6 to ‐8.1 ppm/°C) was achieved in the present materials, and the value of dielectric loss was the lowest one achieved so far in the dielectric materials with a dielectric constant lower than 3. With the structure evolution from ZSM‐5 zeolite to SiO2‐Al2O3 glass and finally to SiO2‐based cristobalite ceramics, the dielectric constant increased from 2.27 to 2.78, while the Qf value indicated a complicated variation tendency, and the higher Qf values were achieved in the amorphous and crystalline states, while significant drop was determined in the partial amorphous state. It should be a great challenge to prepare dense zeolite ceramics without collapse of ordered porous structure, and then the ultra‐low dielectric constant materials with high Q could be expected.

Synthetic modelling of railway trackbed for improved understanding of ground penetrating radar responses due to varying conditions

AbstractGround penetrating radar (GPR) is a commonly used tool for railway trackbed inspection due to its ability to collect information about subsurface materials at high resolution and high speed. Although GPR recording systems allow for the collection of vast quantities of data (hundreds of kilometres per day), accurate ground truth information is difficult to obtain. Models of trackbed can be used to generate synthetic radargrams to provide a better understanding and predictability of GPR responses to a wide range of trackbed conditions. In this research, we produced models of ballast using randomly shaped 3D particles, with a range of particle size distributions to represent various stages of ballast breakdown. Additionally, void spaces are partially filled with a constant dielectric material to represent ballast contamination. We used gprMax to simulate the GPR response for a 2 GHz horn antenna over the trackbed models. These simulations resulted in radargrams that are visually indistinct from real recorded data in known conditions. These radargrams, along with their formative models, have provided valuable insights into how variations in trackbed conditions can impact GPR data.

Non-Contact Adaptive Voltage Sensor Based on Electric Field Coupling Principle.

Non-contact voltage sensors based on the principle of electric field coupling have the advantages of simple loading and unloading, high construction safety, and the fact that they are not affected by line insulation. They can accurately measure line voltage without the need to connect to the measured object. Starting from the principle of non-contact voltage measurement, this article abstracts a non-contact voltage measurement model into the principle of capacitive voltage sharing and deduces its transfer relationship. Secondly, it is theoretically inferred that the edge effect of the traditional symmetric structure sensor plate will cause the actual capacitance value between the sensor plates to be greater than the theoretically calculated capacitance value, resulting in a certain measurement error. Therefore, the addition of an equipotential ring structure is proposed to eliminate the edge additional capacitance caused by the edge effect in order to design the sensor structure. In addition, due to the influence of sensor volume, material dielectric constant, and other factors, the capacitance value of the sensor itself is only at pF level, resulting in poor low-frequency performance and imbuing the sensor with a low voltage division ratio. In this regard, this article analyzes the measurement principle of non-contact voltage sensors. By paralleling ceramic capacitors between the two electrode plates of the sensor, the capacitance of the sensor itself is effectively increased, improving the low-frequency performance of the sensor while also increasing the sensor's voltage division ratio. In addition, by introducing a single pole double throw switch to switch parallel capacitors with different capacitance values, the sensor can have different voltage division ratios in different measurement scenarios, giving it a certain degree of adaptability. The final sensor prototype was made, and a high and low voltage experimental platform was built to test the sensor performance. The experimental results showed that the sensor has good linearity and high measurement accuracy, with a ratio error of within ±3%.

Composite Dielectric Model for Cement Concrete Considering Water Saturation

Water has a significant impact on the dielectric constant of materials. As a multiphase composite material, the effect of water content must be taken into account when modeling the composite dielectric of cement concrete. Cement concrete traditionally has been thought of as a three-phase mixed material consisting of mortar, aggregate (limestone), and pores (air). Water was used as a constituent material of cement concrete in this paper, and its content was described in terms of water saturation. By abstracting the components of cement concrete into independent medium units and arranging them according to certain rules, the four-phase mixing model of cement concrete can be established. To investigate the effect of water, the dielectric constant of cement concrete was measured using a network analyzer at various water saturation levels. The experimental results show that water significantly can enhance the dielectric constant of cement concrete, and this effect is related to porosity: the higher the water saturation, the faster the dielectric constant increases. According to the established concrete four-phase mixed model, combined with the parallel plate capacitor theory, a composite dielectric model considering water saturation was developed which can improve the prediction accuracy under different water saturation conditions and provide a foundation for the application of ground-penetrating radar (GPR) in the quality inspection of cement concrete pavement.

A Differential Microwave Sensor Loaded With Magnetic-LC Resonators for Simultaneous Thickness and Permittivity Measurement of Material Under Test by Odd- and Even-Mode

A differential microwave sensor for simultaneously retrieving thickness and dielectric constant of material under test (MUT) based on magnetic-LC (MLC) resonator is proposed in this manuscript. The procedure of designing proposed microwave sensor is illustrated as follows: 1) Designing a splitter/combiner; 2) Separately etching an MLC resonator under every microstrip branch of splitter/combiner; 3) The symmetry axis of electric wall of each resonator is moved by an offset distance away from the center of every microstrip branch, so the odd- and even-mode will be produced. One resonator is regarded as reference, the other is used as test. From numerical simulation, the electric fields of odd- and even-mode are mainly concentrated at the center arm and two sides of the resonator, respectively. The area of resonator is regarded as sensing region. The equivalent circuit model is adopted to illustrate the operating principle of the proposed sensor. The mathematical model of the relative frequency shifts of two resonant modes with respect to thickness and permittivity of loaded MUT can be established by simulated data. In measurement, the unloaded odd/even-mode resonant frequency and quality factor are 2.5875/5.625 GHz and 251/77.67, respectively. The maximum errors for retrieving permittivity and thickness are about 4.02% and 8.4%, respectively. Besides, the sensitivities for odd- and even-mode are separately calculated as 2.21% and 1.38%, if permittivity and thickness of MUT are set as 6 and 0.1mm, respectively. If the lowest sensitivity of even-mode is set as 0.31%, then the minimum size of MUT is about 3.4 mm×10 mm×0.1 mm. With comparison to traditional microstrip sensors, the proposed sensor can simultaneously retrieve thickness and permittivity of MUT by odd- and even-mode, and it can reduce interferences of external environment by virtue of differential structure. The proposed microwave sensor has a compact size of about 0.43λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> × 0.436λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> (λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> is the wavelength in free space at 2.5875 GHz), and it is a good candidate in the field of characterizing solid materials with some superiorities.

Abnormal line loss identification system of low voltage distribution network based on HPLC communication technology

AbstractPower cable is mainly responsible for the transmission and distribution of electric energy in the power grid. The performance of a power cable greatly affects the reliability and security of the power supply. In order to solve the problem of cable aging caused by long‐term operation and various internal and external factors, this paper proposes an abnormal line loss identification method for a low‐voltage distribution network station area, aiming at focusing on the monitoring of cable aging. The transmission characteristic model based on the transmission line theory and the dielectric constant model of the aging cable insulation layer is established, and the internal relationship between the transmission characteristic and the aging characteristic is analyzed. The characteristic extraction algorithm is used to extract the characteristics of the transmission characteristic curve. Through simulation analysis, for the abnormal line loss fault, the location accuracy of different fault locations is basically at the level of 0.1–0.3%. The simulation of local defects in the cable shows that the change of material dielectric constant is more clear for the characterization of cable aging. The monitoring method in this paper is helpful to provide the relevant basis for the line maintenance plan and the operation strategy of the power grid and is of great significance to ensure the safe and stable operation of the power grid.

Design of meander line antenna using low tangent loss material

The meander line antenna is designed for wireless application using CST-MWS. The antenna design requires lots of analysis like substrate material, dielectric constant, loss tangents, port selection etc. The FR4 is widely available and chip material for antenna design. But tolerances are quite high because FR4 is a considerably less expensive board. Therefore, it is challenging to determine the relative dielectric constant's exact value. In this research antenna is designed using 4.4 dielectric constant material. A mixture of flame-retardant epoxy resin and glass fabric is used to create the FR4 class of printed circuit board base materials. FR stands for flame retardant and complies with UL94V-0 standards.A two-element meander line antenna is created for this study. The MIMO antenna is 90 × 31 × 1.6 mm3 in total. A single patch meander antenna measures 45x31 mm2. Good isolation performance between antenna elements is produced by the high isolation. The suggested MIMO antenna is designed with meander arms since the basic rectangular traditional patch required more space than the meander line structure did. The recommended antenna's envelope correlation coefficient (ECC) is less than 0.014. The gain of the MIMO antenna is 0.4 dB, and the directivity of the antenna is 6.85 dBi. The MIMO antenna's bandwidth ranges from 4.88 to 4.97 GHz, and it resonate at 4.93 GHz. The antenna has a return loss of −44 dB and a bandwide isolation of more than 22 dB. The material consider here as FR-4 substrate (lossy) (Ɛr = 4.3), h = 0.078 mm and t = 0.07 mm with low tangent losses. The thermal conductivity of material is varies from 2.2 to 2.5 cal/h. cm Deg C. The coefficient of thermal expansion is 11 µm/m/Deg. C. The MIMO antenna performance parameter is evaluated by considering FR-4 material and it is found satisfactory to fulfill the wireless antenna design needs.

IoT based dielectric constant measurement system for solid or semi-liquid materials using Arduino WeMos D1R1

The measurement-system mainly consists of sensing-element, signal conditioning circuit and signal-processing unit. The sensing-element of a measuring system is directly affected by materials carrying quantity to be measured. This system supports solid or semi-liquid material. This paper signifies the designed system for dielectric constant measurement using Arduino with Wi-Fi and capacitive sensing element which sends/shows information continuously on android app or cloud to build IoT based system.With the help of Polarization, Dielectric properties, Cole-Cole diagram, Microwave Measurement Methods and Arduino with IC-555, many techniques with limitations and complications are available to calculate dielectric constant. But this advanced system consists only Arduino without any other bulky circuit. In this system, measurement of dielectric constant depends on parameters of capacitive sensing element and property time constant of capacitor. Capacitor with larger capacitance takes more time to charge as well as discharge. The charging and discharging voltage of the capacitor is applied to Arduino (WeMos D1-R1) with signal conditioning. Here, from capacitance, dielectric constant of material is calculated and verified with standard values. WeMos D1-R1 Arduino has Wi-Fi facility to transmit data continuously on cloud. Designed system gives the capacitance, dielectric constant of substance, and displays it on android app and cloud or website with accuracy about approximately 99.46%.

(Digital Presentation) Investigation on Effects of I/C Ratio on Dispersion Structure of PEFC Catalyst Ink By Scanning Electron Assisted Dielectric Microscopy

To achieve high power density operation of polymer electrolyte fuel cells (PEFCs), it is required to realize higher performance catalyst layer with low oxygen transport resistance, high proton conductivity, and low Platinum loading. Because dispersion structure of catalyst ink strongly affects the catalyst layer structure, it is crucial to understand the dispersion mechanism of PEFC catalyst ink. We have reported that that solvent composition (ethanol concentration) of the catalyst ink strongly affect dispersion of the catalyst ink [1, 2], but effects of other components on the dispersion of the catalyst ink were not fully understood yet. In this study, effect of I/C ratio (amount of ionomer) on the dispersion of the catalyst ink was investigated.The catalyst inks were fabricated by mixing platinum-supported carbon (TEC10V30E, Tanaka Kikinzoku), ionomer (DE1021, Sigma-Aldrich), and water/ethanol solvent. To investigate the effect of ionomer on dispersion of the catalyst ink, solvent compositon (ethanol/water = 20/80 wt%), amount of the platinum-supported carbon and solid content of the catalyst ink were kept constant., and the I/C ratio was changed from 0.25 to 1.25. Viscosity characteristics were measured at each shear rate in the range of 0.01 to 1000 1/s by a rotary rheometer (MCR302, Anton-Paar), and particle size distribution of the catalyst ink was measured by the laser diffraction type particle size distribution meter (LA-960V2, HORIBA) without any dilution. In addition, we have succeeded to directly observe the dispersion structure of the catalyst ink by using a scanning electron assisted dielectric microscopy (SE-ADM) for the first time. SE-ADM enabled observation of the catalyst ink with very little radiation damage and high-contrast imaging without staining or fixation at an 8-nm spatial resolution, and distribution of the platinum-supported carbon, ionomer, and solvent were clearly observed.Figure (a) showed the effects of I/C ratio on aggregation size. The result clearly showed that the catalyst inks with too less (I/C=0.25) or too much (I/C=1.25) amount of ionomer were aggregated. Figure (b) showed the results of SE-ADM imaging. Because the dielectric constant of materials within the catalyst ink were different, the image clearly visualized distribution of the platinum-supported carbon, ionomer, and solvent, and the visualization results of the catalyst ink with different I/C ratio were consistent with the results of the particle size distribution measurement. Though the ionomer works as a surfactant within the catalyst ink, too much ionomer makes the dispersion of the catalyst ink worth, and tuning the amount of ionomer is important to realize the high performance catalyst layer.AcknowledgementThis presentation is based on results obtained from a project commissioned by the New Energy and Industrial Technology Development Organization (NEDO).[1] Kaname Iida et al. 2020 ECS Trans. 98, 497.[2] Takashi Sasabe et al. 2021 ECS Trans. 104, 191. Figure 1

Inter-band and mid-gap luminescence in CH3NH3PbBr3 single crystal

Photoluminescence is informative to other optoelectronic processes that are less directly accessible in metal halide perovskites. In this study, we conducted optical studies on CH3NH3PbBr3 single crystals with robust cubic lattices and atomically flat surfaces. Inter-band luminescence peaking aside from the absorption cutoff was observed, and its shifts toward shorter wavelength upon cooling. Cooling the crystal below 150 K leads to the occurrence of mid-gap luminescence partly at the expense of the inter-band luminescence, which indicates bulk photoluminescence quenching by trap-mediated electronic trapping and subsequent mid-gap radiation following electronic de-trapping. Time-resolved photoluminescence probed at the mid-gap luminescence maxima shows two-stage mono-exponential traces, directly corroborating the trapping and de-trapping processes. In the presence of mid-gap luminescence at low temperatures, time-resolved inter-band luminescence demonstrates triplet decaying pathways, in sharp contrast to the doublet decaying pathways at higher temperatures in the absence of mid-gap luminescence. Time- and temperature-resolved inter-band photoluminescence gave rise to a characteristic photocarrier lifetimes evolution against temperature in a close analogy to the material's dielectric constant.

Dielectric Properties of Polymer Films in Strong Electromagnetic Field for Energy Storage Capacitor

In this article, polypropylene (PP), polyimide (PI), polyvinylidene difluoride (PVDF), and polyethylene (PE) dielectric materials are applied to analyze the performance degradation mechanism under magnetic field. The properties of the dielectrics are investigated under different magnetic fields. With the increase of magnetic field, the dielectric constant of materials is reduced and that of PVDF decreases the most. The conductivity of dielectric materials is all on the rise due to the magnetic field. Compared with under normal environment, the conductivity of the PVDF under 12-T magnetic field climbs to 574%, which is the largest increase in all dielectrics. The breakdown strength of PP and PE decreases by 17.2% and that of PVDF decreases by 22%. On the one hand, the magnetic field deflects the electric dipole in the opposite direction through Lorentz force, so as to limit the dipole steering and reduce the dielectric constant. On the other hand, the magnetic field increases the quantity of carriers by exciting electrons, which is the main reason for the decrease of breakdown strength. This article is of significance to the application of dielectric capacitors under harsh magnetic environment.

Microwave Polarization Sensing for Dielectric Materials Based on a Twisted Dual-Layer Meta-Surface.

A microwave sensor is proposed based on a chiral twisted dual-layer meta-surface. Elliptical angle and polarization rotation angle are used to characterize the different dielectric constants of materials. The dielectric films consisting of polydimethylsiloxane and barium titanate with volume fractions 0%, 10%, 15%, 20% are prepared and tested for a proof of concept. The measured results show that the Q factors of polarization rotation angle and elliptical angle peak are 11.85 when the volume fraction of barium titanate is 20%, which is 75.5% higher than 6.75 of the transmission resonance peak, and the figures of merit of the polarization rotation angle and elliptical angle peak are 0.99 and 0.86, which are 73.7% and 50.9% higher than the 0.57 of transmission resonance, respectively. Compared to the resonance sensing method, polarization sensing not only has a better Q factor and figure of merit while maintaining similar sensitivity, but also obtains more characterization information due to the double-parameter sensing, which provide a new idea for the development of high-sensitivity microwave sensors.

Enhanced electromagnetic microwave absorption of SiC nanowire-reinforced PDC-SiC ceramics catalysed by rare earth

Rare earth elements can modulate the dielectric constant of materials and significantly improve their dielectric properties. Herein, SiCnws/SiC ceramics were prepared through polymer derived ceramics (PDCs) technology with rare earth Sc particles as the catalyst. The Sc particles promote the precipitation of SiC and C from the matrix. Furthermore, the SiCnws, grown via the vapour-liquid-solid (VLS) mechanism, construct the three dimensional (3D) network structure to improve impedance matching and loss characteristics. Remarkably, the SiCnws/SiC ceramics minimum reflection coefficient (RCmin) achieved a value of −33.2 dB at 9.4 GHz with a thickness of 2.75 mm, and the effective absorption bandwidth (EAB) was 4.2 GHz covering the whole X band. When microwaves permeated into the SiCnws/SiC ceramics, those trapped in the 3D network structure underwent a variety of microwave energy dissipation processes, including multiple reflections, scattering, and interface and dipole polarisation. Consequently, SiCnws-reinforced PDC-SiC ceramics catalysed by rare earth emerge as a promising new approach to enhance electromagnetic (EM) wave absorption performance.

Application of the body of revolution finite-element method in a re-entrant cavity for fast and accurate dielectric parameter measurements

In dielectrometry, traditional analytical and numerical algorithms are difficultly employed in complex resonant cavities. For a special kind of structure (a rotating resonant cavity), the body of revolution finite-element method (BOR-FEM) is employed to calculate the resonant parameters and dielectric parameters. In this paper, several typical resonant structures are selected for analysis and verification. Compared with the resonance parameter values in the literature and the simulation results of commercial software, the error of the BOR-FEM calculation is less than 0.9% and a single solution time is less than 1 s. Reentrant coaxial resonant cavities loaded with dielectric materials are analyzed using this method and compared with simulation results, showing good agreement. Finally, in this paper, the established BOR-FEM method is successfully applied with a machined cavity for the accurate measurement of the complex dielectric constant of dielectric materials. The test specimens were machined from polytetrafluoroethylene, fused silica and Al2O3, and the test results showed good agreement with the literature reference values.

Cellulose nanocrystal enhanced, high dielectric 3D printing composite resin for energy applications

Photocuring-based 3D printing becomes an emerging technology in various applications owing to their advantages of high design flexibility and low cost. Developing 3D printing resins with high dielectric constant is important for enabling on-demand manufacturing of energy storage materials. Herein, we report a scalable and simple approach for preparing ultraviolet (UV) curable resin composite with high dielectric constant, through the introduction of cellulose nanocrystals (CNCs) as bio-fillers into methacrylate malate photocurable resins (MMPR). MMPR resin was synthesized by reacting methacrylic acid (MAA) with malate resin (MR), while CNCs were also grafted to MAA for allowing the uniform dispersion of fillers in the polymer matrix. Subsequently, high dielectric constant composite resin CNCs-MAA/MMPR was prepared by simply mixing CNCs-MAA with MMPR and the dielectric constant of materials can be manipulated by varying the content of CNCs-MAA particles. Specifically, with the addition of 1 wt% CNCs-MAA, the dielectric constant increases from 4.0 (MMPR) to 10.9 at 1 MHz, which can be attributed to the interfacial effect between CNCs-MAA and MMPR matrix and the abundant presence of polar groups (-OH) from CNCs surface. The prepared resin composite can be directly used for conventional 3D printing technologies. Specifically, practical use of CNCs-MAA/MMPR composites for energy storage was demonstrated, which the capacitance of MAA/MMPR resin with 1 wt% CNCs increases more than 132% compared to pristine MMPR. This work provides an industrially feasible method for preparing photocurable resin composites with high dielectric constants for 3D printing.