Shift Of Edge Research Articles

Elliptical vibration cutting of large-size thin-walled curved surface parts of pure iron by using diamond tool with active cutting edge shift

Large-size thin-walled curved surface parts of pure iron are crucial in aerospace, national defense, energy and precision physical experiments. However, the high machining accuracy and surface quality are difficult to achieve due to the serious tool wear and deformation when machining the parts with conventional cutting tools. In this paper, an elliptical vibration cutting (EVC) with active cutting edge shift (ACES) based on a long arbor vibration device is proposed for ultra-precision machining the pure iron parts by using diamond tool. Compared with cutting at a fixed cutting edge, the influence of ACES on the EVC was analyzed. Experiments in EVC of pure iron with ACES were conducted. The evolutions of the surface roughness, surface topography, and chip morphology with tool wear in EVC with ACES are revealed. The reasonable parameters of ultra-precision machining the pure iron parts by EVC with ACES were determined. It shows that the ACES has a slight influence on the machined surface roughness and surface topography. The diamond tool life can be significantly prolonged in EVC of pure iron with ACES than that with a fixed cutting edge, so that high profile accuracy and surface quality could be obtained even at higher nominal cutting speed. A typical thin-walled curved surface pure iron part with diameter ∅240 mm, height 122 mm, and wall thickness 2 mm was fabricated by the presented method, and its profile error and surface roughness achieved PV 2.2 μm and Ra less than 50 nm, respectively.

Estimation of spectral responses and chlorophyll based on growth stage effects explored by machine learning methods

Estimation of leaf chlorophyll content (LCC) by proximal sensing is an important tool for photosynthesis evaluation in high-throughput phenotyping. The temporal variability of crop biochemical properties and canopy structure across different growth stages has great impacts on wheat LCC estimation, known as growth stage effects. It will result in the heterogeneity of crop canopy at different growth stages, which would mask subtle spectral response of biochemistry variations. This study aims to explore spectral responses on the growth stage effects and establish LCC models suited for different growth stages. A total number of 864 pairwise samples of wheat canopy spectra and LCC values with 216 observations of each stage were sampled at the tillering, jointing, booting and heading stages in 2021. Firstly, statistical analysis of LCC and spectral response presented different distribution traits and typical spectral variations peak at 470, 520 and 680 nm. Correlation analysis between LCC and reflectance showed typical red edge shifts. Secondly, the testing model of partial least square (PLS) established by the entire datasets to validate the predictive performance at each stage yielded poor LCC estimation accuracy. The spectral wavelengths of red edge (RE) and blue edge (BE) shifts and the poor estimation capability motivated us to further explore the growth stage effects by establishing LCC models at respective growth periods. Finally, competitive adaptive reweighted sampling PLS (CARS-PLS), decision tree (DT) and random forest (RF) were used to select sensitive bands and establish LCC models at specific stages. Bayes optimisation was used to tune the hyperparameters of DT and RF regression. The modelling results indicated that CARS-PLS and DT did not extract specific wavelengths that could decrease the influences of growth stage effects. From the RF out-of-bag (OOB) evaluation, the sensitive wavelengths displayed consistent spectral shifts from BE to GP and from RE to RV from tillering to heading stages. Compared with CARS-PLS and DT, results of RF modelling yielded an estimation accuracy with deviation to performance (RPD) of 2.11, 2.02, 3.21 and 3.02, which can accommodate the growth stage effects. Thus, this study explores spectral response on growth stage effects and provides models for chlorophyll content estimation to satisfy the requirement of high-throughput phenotyping.

Abnormal red shift in photoluminescence emission of ZnO nanowires

In this study, ZnO nanowires (NWs) have been synthesized through a simple chemical method and their optical properties were investigated using UV–vis, photoluminescence (PL) and Raman spectroscopy. PL studies revealed the red shift in the near band edge (NBE) emission peak with increasing diameter from 170 nm to 560 nm. By taking the sample with diameter d = 170 nm as a reference, the value of this red shift was found to be varied from 55 meV to 149 meV with the increase in diameter. Furthermore, this red shift shows the direct relation with the width of extra Zinc interstitial (Zni) or metal clusters related defect depletion layer at the boundary walls of nanowires. In this paper, the explanation for this red shift in PL is established by band bending at the edges of NWs caused by the depletion layer of excess Zn related defects. The confinement of the electrons at the surface of NWs was also found to be responsible for this red shift.

One-pot synthesis of flower-like Bi2WO6/BiOCOOH microspheres with enhanced visible light photocatalytic activity

Herein, flower-like Bi2WO6/BiOCOOH heterojunction photocatalysts were synthesized by one-pot method. Morphological characterizations had demonstrated that the Bi2WO6 nanoparticles were tightly anchored on the surface of BiOCOOH, which indicated that the successful synthesis of the Bi2WO6-BiOCOOH photocatalysts. Compared with pure BiOCOOH and Bi2WO6, the Bi2WO6/BiOCOOH photocatalysts had exhibited a red shift in absorption edge and enhanced visible light absorption. EIS, PL and photocurrent response results suggested that the form of the Bi2WO6-BiOCOOH heterojunction facilitated the separation of photogenerated electron and hole pairs. Furthermore, the photoactivity of Bi2WO6/BiOCOOH were evaluated by the photocatalytic degradation of tetracycline (TC) and ciprofloxacin (CIP) under the simulated sunlight irradiation. The results manifested that the W/Bi-2 photocatalyst exhibited the best photocatalytic activity, which TC was degraded by 88 % within 75 min and CIP was degraded by 90 % within 90 min. The improvement of photocatalytic activity was mainly attributed to the decrease in the composite rate of photo-induced electron-hole pairs. Radical trapping experiments and EPR results indicated that holes (h+) and superoxide radicals (·O2–) were dominant during the degradation of TC. The possible photocatalytic mechanism was discussed based on the band structures of BiOCOOH and Bi2WO6.

Superior dielectric behaviour and band gap tuning of Zn doped MgO nanoparticles

ABSTRACT The primary aim was to study the doping effect of Zn in MgO nanoparticles (NPs) prepared by the co-precipitation method. X-ray diffraction (XRD) results inferred the cubic structure of MgO with good crystallinity, which changed with dopant additions. Scanning electron microscope (SEM) images exposed the development of NPs with decreasing size and dimensions with little agglomeration on doping. Fourier transform infrared (FTIR) results revealed the Mg-O bond formation, which is associated with Zn-O bond on increasing dopant content. UV Vis studies showed the red shift in absorption edge and decreased band gap with percentage of Zn dopant additions. The dielectric results exposed the dielectric constant, dielectric loss and ac conductivity of Zn-doped MgO NPs. Dopant addition led to the higher dielectric constant and low dielectric loss at lower frequency due to oxygen vacancies generation. The impedance behaviour in different frequency regimes illustrated the effective contribution of conductive grains and insulating grain boundaries.

Energy band reconstruction mechanism of Cl-doped Cu2O and photocatalytic degradation pathway for levofloxacin

Cl-doped Cu 2 O microparticles were prepared by hydrothermal synthesis . XRD, BET, SEM, TEM, UV–Vis and RSM were used to reveal the microstructure, optical properties and degradation regularity of the Cl-doped Cu 2 O microparticles. The band gap structures and state densities of Cl-doped Cu 2 O microparticles were computed based on density functional theory . The major intermediate degradation products and potential photocatalytic degradation pathways of levofloxacin were identified by HPLC–MS/MS. The photocatalytic active sites of levofloxacin and its intermediate products were calculated based on the frontier electron densities. The results showed that the prepared Cl-doped Cu 2 O microparticles increased the specific surface area and absorption efficiency of visible light compared with undoped pure Cu 2 O. The doping of Cl introduced hybrid orbitals and oxygen vacancy defects in the Cu 2 O crystal cell and decreased the forbidden bandwidth of Cu 2 O crystal microparticles, leading to a redshift of the absorption edge . Cl doping could form a shallow donor impurity energy level composed of Cl 3 p orbital in the energy gap of Cu 2 O and make the energy band denser and move to a lower energy, which could promote the electron leap to the conduction band through the impurity level . The doping of Cl can make the density of states curve of the Cu 2 O crystal shift to low-energy and the Cl-doped Cu 2 O rendered to half-metallic behavior and characteristic behavior of an n type semiconductor. The photocatalytic degradation of levofloxacin was attributed to attack of photogenerated holes and hydroxyl radicals , and the ring opening of the piperazine ring by oxidation and decarboxylation reactions from the quinolone ring might be two photocatalytic degradation pathways. This study revealed the mechanism of oxygen vacancy formation and the change rules of the band structure by doping of the nonmetal chlorine into Cu 2 O crystallites . • Migration laws of band structure and state density of Cl-doped Cu 2 O were revealed. • Doping of Cl introduced hybrid orbitals and oxygen vacancies in the Cu 2 O crystal. • Doping of Cl decreased band gap of Cu 2 O and led to red shift of absorption edge. • Holes and hydroxyl radicals are the main photocatalytic active species. • Degradation paths of levofloxacin were piperazine ring opening and decarboxylation.

Photoassisted Charging of Li-Ion Oxygen Batteries Using g-C3N4/rGO Nanocomposite Photocatalysts.

In this work, g-C3N4/rGO nanocomposites were synthesized to use them as photocatalysts in Li-ion oxygen batteries by aiming at the reduction of the charging potential efficiently under photoassisted conditions. Fourier transform infrared (FTIR) spectra showed that novel C=C bonds formed between g-C3N4 and rGO during the decomposition of melamine and that the formation of these bonds was assumed to cause a red shift in the optical absorption band edge. The competition between the narrowing in the optical band gaps of the nanocomposites as a result of the red shift due to the presence of rGO and the degradation in the visible light utilization as a result of favorably absorbed incident light by rGO instead of g-C3N4 pointed out that the g-C3N4/3% rGO nanocomposite has the optimum light absorbance efficiency. The photoassisted charging tests indicated that the g-C3N4/3% rGO nanocomposite reduced the charging potential effectively, especially at higher current densities, and improved the cyclic discharge–charge performance of the Li-ion oxygen batteries considerably.

A Single-Atom Fe-N-C Catalyst with Ultrahigh Utilization of Active Sites for Efficient Oxygen Reduction.

Fe-N-C single-atom catalysts (SACs) are emerging as a promising class of electrocatalysts for the oxygen reduction reaction (ORR) to replace Pt-based catalysts. However, due to the limited loading of Fe for SACs and the inaccessibility of internal active sites, only a small portion of the sites near the external surface are able to contribute to the ORR activity. Here, this work reports a metal-organic framework-derived Fe-N-C SAC with a hierarchically porous and concave nanoarchitecture preparedthrough a facile but effective strategy, which exhibits superior electrocatalytic ORR activity with a half-wave potential of 0.926V (vs RHE) in alkaline media and 0.8V (vs RHE) in acidic media while maintaining excellent stability. The superior ORR activity of the as-designed catalyst stems from the unique architecture, where the hierarchically porous architecture contains micropores as Fe SAC anchoring sites, meso-/macro-pores as accessible channels, and concave shell for increasing external surface area. The unique architecture has dramatically enhanced the utilization of previously blocked internal active sites, as confirmed by a high turnover frequency of 3.37 s-1 and operando X-ray absorption spectroscopy analysis with a distinct shift of adsorption edge.

First-principles study of photocatalytic mechanism and charge transfer of PtS2/MoSe2 S-scheme heterojunction

In this work, the PtS2/MoSe2 heterojunction was verified as a S-scheme heterojunction with strong redox ability by density functional theory calculations. Firstly, the band structure and density of states of PtS2/MoSe2 heterojunction are systematically investigated. The results show that the band gap of the PtS2/MoSe2 heterojunction is effectively narrowed compared to the pristine semiconductor, resulting in a red shift of the absorption edge; then, According to the analysis of work function, the height difference of the Fermi level induces the spontaneous flow of electrons, resulting in band bending and the establishment of the built-in electric field, which will promote the recombination (separation) of electron-hole pairs with weak (strong) redox ability at the interface. The carriers with strong redox ability are effectively separated and preserved, which prolongs the lifetime of photogenerated carriers and improves the photocatalytic efficiency.

Chemical and structural changes of g-C3N4 through oxidative physical vapor deposition

In this work, a novel synthetic route was proposed for producing a g-C3N4-based wide band gap semiconductor material and its thin film deposition via oxidative physical vapor deposition (OPVD). To study the phase composition of the initial and OPVD-deposited samples, the PXRD method was used. The analysis of the qualitative and quantitative composition was carried out using XPS. Finally, the change in the morphology of the samples was shown by SEM and Raman analyses. It was found that the OPVD-deposited sample shows an increase in graphite-like species and a decrease in pyridine and pyrrole forms of nitrogen. An increase in the band gap from 2.92 eV to 4.2 eV and a shift of the absorption edge to longer wavelengths allows to consider the deposited material as a base substance for the production of multi-junction carbon photocatalysts with a broader work spectrum.

Photocatalytic Degradation of Phenol Red in Water on Nb(x)/TiO2 Nanocomposites

In this paper, the photocatalytic effect of Nb(x)/TiO2 nanocomposites on the degradation of phenol red (PR) was studied. Nb(x)/TiO2 nanocomposites are fabricated by a simple sol-gel route with new experimental conditions. The structural and optical properties were determined using high transmission electron microscopy (HRTEM), X-ray diffraction, Raman spectroscopy, photoluminescence, and UV-vis absorbance spectroscopy. Compared to pure anatase TiO2, the recently fabricated Nb(x)/TiO2 nanocomposite has a shift in the optical band edge to the visible wavelength. Consequently, it has high performance in adsorption capacity and photocatalytic activities. A time of 160 min has been observed to be suitable for mostly degradable 20 mgL−1 of phenol red on Nb(2.0)/TiO2 composite. The kinetic results were in good agreement with the first-order kinetic model at different concentrations. In addition, the results showed that the addition of Nb led to a significant degradation process. The decomposition of phenol red pollutants showed a synergistic effect of the Nb(2.0)/TiO2 nanocomposites on wastewater treatment.

Enhanced Photocatalytic Degradation of Rhodamine-B under Led Light Using CuZnAl Hydrotalcite Synthesized by Co-Precipitation Technique

The co-precipitation method was employed to synthesize a set of ZnAl hydrotalcite materials modified by Cu2+. The synthesized materials have a similar lamellar structure to that of hydrotalcite. The distance between layers is in the range of 7.73–8.56 Å. The network parameters a and c ranged from 3.058 to 3.074 Å and from 23.01 to 24.44, respectively. According to the IUPAC classification, the composites possess a mesoporous structure which belongs to class IV, type H 3. Particularly, the absorption edge shifts strongly to the visible light region when increasing the molar ratio of Cu2+ in the samples from 0 to 3.5. The photocatalytic activity of the synthetic materials was evaluated through the degradation efficiency of rhodamine-B (Rh-B) in the water and colorants in textile wastewater. The present study was the first to synthesize a material sample that contains a molar ratio of Cu2+ in the range of 2.5–3.5 and has high catalytic activities. They were able to degrade Rh-B at a high concentration (100 ppm) with a conversion rate of approximately 90% after 240 min of irradiation using a 30 W LED light. The catalytic activity of the composites depends on the molar ratio of modified Cu2+, the value of environmental pH, the H2O2 concentration and the irradiation time.

Structural and Optical Properties of R6G Doped Nanotitania Thin Films Deposited via Sol–Gel Dip-coating Meth

Pure and rhodamine 6G (R6G) doped titanium dioxide (TiO2) nanostructure thin films with different concentrations (310-4 , 310-5 , 310-6 , and 310-7 ) M of doped TiO2 sol were deposited on glass substrate via dip-coated sol-gel method. Amorphous structure of the pure and doped TiO2 thin films was identified by X-ray diffraction (XRD) technique. UV-Visible (UV-vis) and fluorescence spectrophotometry techniques were used to study optical and spectroscopic characterization of the samples, respectively. The absorption spectra for all pure and doped TiO2 films indicate a strong absorbance in the UV region which open the possible application of these films for UV filter optical element. 50 nm blue shift of the absorption edge for the TiO2 films with respect to the sol was observed which proves the nanostructure texture of TiO2 thin films. Upon increasing dye concentration, a red shift in the maximum fluorescence emission peaks of R6G ethanolic solution and doped TiO2 sol was observed. The presence of R6G dye molecules in the matrix of TiO2 films is demonstrated by the appearance of two distinct intensity fluorescence peaks at 540 and 600 nm. Various fluorescence peaks of R6G doped TiO2 thin films were observed in UV-vis region under 300 nm pumping wavelength.

Synergetic surface defect passivation towards efficient and stable inorganic perovskite solar cells

Metal halide inorganic perovskites with excellent thermal stability are holding promise for practical application of perovskite solar cells (PSCs). However, ionic defects, especially iodine vacancies or undercoordinated lead, from the perovskite film surface restrain the obtainment of maximum open circuit voltage as well as long term stability of devices. In this regard, reducing the detrimental defects is of priority to further enhance the performance of inorganic PSCs. Herein, we employed an organic amine compound, specifically diethyldithiocarbamic acid diethylamine (DADA), to passivate the ionic defects on the surface of CsPbIxBr3-x inorganic perovskite film. It is found that the electron-rich sulfur atoms from DADA molecule react with undercoordinated Pb in perovskite, while diethylamine cation effectively forms hydrogen bond with halide ion, further strengthening the passivation effect. Such synergetic passivation, together with the improved film morphology, significantly reduces the defect density and prolongs the lifetime of charge carriers within the perovskite film. Moreover, DADA treatment induces an upward shift of the energy band edge of the perovskite layer, which may facilitate hole extraction at the interface. These combination raises the solar cell efficiency from 18.56% to 20.06% under 100 mW cm−2 illumination. More importantly, the mitigation of ionic defects via DADA passivation dramatically improve the devices ambient stability by retaining the PCE of nearly 90% over 800 h in a 30–40% relative humidity environment.

High zirconium loads in Zr-SBA-15 mesoporous materials prepared by direct-synthesis and pH-adjusting approaches

SBA-15 is a material with interesting characteristics associated with the size, order, uniformity, and pores distribution. However, the absence of acidity in SBA-15 restricts its applications as a potential acid catalyst in the industry for the large-scale production of fuels and chemicals. Mesoporous SBA-15 modified by the incorporation of heteroatomic species can be a good strategy to include acidity and prepare an efficient catalyst. In this work, we present a comparative study in the preparation of SBA-15 and Zr-SBA-15 mesoporous materials with high zirconium loads (Si/Zr ​= ​10, 5, and 2) using direct-synthesis and pH-adjusting approaches with a low crystallization temperature of 60 ​°C. The materials were characterized using XRPD, HRTEM, ICP, SEM-EDS, XPS, DRS UV-VIS, FT-IR, NH3-TPD, in situ FT-IR with pyridine probe, and N2-physisorption. Characterization by ICP and SEM-EDS indicated that the Si/Zr molar ratio of Zr-materials prepared by the pH adjustment better matched the nominal values. N2-physisorption showed that the mesoporosity of the materials was preserved even at the high Zr load. XRPD and HRTEM pointed out that Zr-SBA-15 materials prepared by the pH adjustment showed a higher level of ordering in the porous network. Regardless of the synthesis approach, the presence of a higher Zr load caused a loss in the structural ordering. It must be highlighted that the high-resolution XPS spectra of Zr 3d suggested the formation of Si–O–Zr bonds giving some indication of Zr incorporation into the SBA-15 framework. The formation of Si–O–Zr linkage in the Zr-materials was also corroborated by DRS UV-VIS due to the presence of a blue shift in the absorption edge for both series of the Zr-SBA-15 materials. NH3-TPD and in-situ FT-IR spectroscopy with pyridine probe showed that the presence of Zr species introduces acidity in the SBA-15 and at higher Zr load the Brønsted acidity increased particularly for the Zr-materials prepared by pH adjustment. In conclusion, this study evidences that the pH-adjusting approach improves structural, textural, morphological, and acidic properties in SBA-15 and Zr-SBA-15 materials compared to the direct-synthesis approach.

Influence of Ni doping on the structural and third order nonlinear optical properties of ZnMoO4 nanostructures

We report the third order nonlinear optical properties of Ni doped ZnMoO4 nanostructures with various concentration of Ni. The structural, optical and morphological properties have been investigated. X-ray diffraction pattern confirmed the successful incorporation of Ni into ZnMoO4 lattice without any secondary phase formation. The optical absorption spectra revealed a slight shift of absorption edge towards longer wavelength with an additional band appeared at 440 nm upon Ni doping. The variation of nonlinear optical properties of the synthesized nanostructures under continuous wave laser was investigated by a Z-scan technique at 532 nm. Experimental results reveal that the nanostructures exhibit reverse saturable absorption and negative nonlinearities. The measured third order nonlinear optical susceptibility was found to be in the order of 10−6 esu. Based on the observed results it is suggested that the nonlinear optical characteristics of the nanostructures could be controlled by Ni doping making them a potential candidate for optical device applications.

Investigation of electronic and optical properties of PbxSn1-xO2 for optoelectronic applications: A TB-mBJ DFT approach

A comprehensive study of electronic and optical properties of PbxSn1-xO2 (x = 0.125, 0.25 and 0.375) have been performed utilizing PBE-GGA + TB-mBJ scheme employing WIEN2K package under DFT formalism. The lattice constant parameters obtained for PbxSn1-xO2 are observed to be invariant with rutile SnO2. The DoS (Density of States) profile of PbxSn1-xO2 states a dominant impact of partial states of Pb along the conduction band. A red shift of conduction band edge has been observed with increasing Pb incorporation in PbxSn1-xO2 supercells. The contribution due to partial states of O is supreme as compared to Pb along the valence band, as also encountered in SnO2. The nature of bandstructure is in parity with DoS profile. With increased incorporation of Pb atoms in PbxSn1-xO2 supercells, a significant lowering of conduction band minimum occurs thereby resulting in reduced band gap. The nature of reduction of optical band gap values is in parity with the electronic band structure. The optical parameter characteristic curves undergo redshift due to increased Pb incorporation in PbxSn1-xO2 supercells. Distinct peak values in absorption characteristic curve claims the material to have direct band gap. Higher value of static refractive index causes dispersion in the material. The real (imaginary) part of dielectric constant is consistent with the refractive index (extinction coefficient) characteristic curves. The reflection coefficient curve indicates lossy nature of the material. The reflection coefficient curve contradicts the loss coefficient characteristic curve. Hence, the consequences of this investigation claim the competency of PbxSn1-xO2 material for optoelectronic applications.

The effect of Ge addition on the optical and physical properties of thermally evaporated amorphous Pb15Se85-xGex (x = 0, 3, 6, 9, 12) thin films and bulk glasses

The effects of the addition of Ge on the optical and physical properties of a-Pb15Se85-xGex (x = 0, 3, 6, 9, 12 at. %) vacuum evaporated thin films are discussed in the given paper. An X-ray diffraction analysis of the films reveals no sharp peaks, indicating their amorphous nature. Transmission spectra of normal incidence were measured in the spectral window of 500 nm–2400 nm. An absorption edge shift has been observed with the addition of Ge at the expense of Se. Swanepoel analysis was applied to compute the refractive index values. Absorption losses were also calculated and discussed. The increase in Ge addition changes the refractive index and absorption coefficient. The bandgap transition is indirect and experimentally calculated using the Tauc-extrapolation method. Penetration depth and optical density were also calculated. WDD model was applied and static refractive index and WDD parameters were evaluated. Theoretical parameters viz. Cohesive energy, average heat of atomization, compactness, polaron radius were also calculated. Efforts were made to correlate obtained optical and physical parameters of the system.

Ni doping effect on the electronic, structural and optical properties of ZnO nanoparticles prepared by Co-precipitation route

Nanoparticles (NPs) synthesized by the co-precipitation technique show many attractive properties such as small particle size, high crystallinity, high average pore diameter and high specific surface area. However, numerous reports show that some characteristics of the Ni-doped ZnO (NZO) NPs remain controversial such as optical bandgap (Eg), surface morphology and defect level. In this study, pure ZnO and NZO NPs at different Ni contents (x) were successfully prepared using the co-precipitation method. Phase analysis confirms the hexagonal wurtzite crystallinity of the samples. XRD peak shows that the Ni may substituted ZnO structure as the peaks shift toward higher angles with increasing x. Meanwhile, the formation of NiO secondary phases was significant at 12.50% Ni content. Densely packed spherical shaped structures with nanoparticle agglomeration are observed at low x, while some nanorod shaped structures appear at higher x. The stretching vibrations of the Zn–O bond are observed in the NZO NPs. The absorption edge shifts to higher wavelengths with the increase in x. This study provides consistent results in the phase analysis, morphology and structural parameters. The decrease in Eg agrees with the photoluminescence measurements. The emission spectra confirm the presence of interstitial zinc and singly ionized oxygen vacancies.

Dynamical polarization, optical conductivity and plasmon mode of a linear triple component fermionic system

We investigate the density and optical responses of a linear triple component fermionic system in both non-interacting and interacting regimes by computing its dynamical polarization function, random phase approximation dielectric function, plasmon mode and long wavelength optical conductivity and compare the results with those of Weyl fermions and three-dimensional free electron gas. Linear triple component fermions are pseudospin-1 generalization of Weyl fermions, consisting of two linearly dispersive bands and a flat band. The presence of flat band brings about notable modifications in the response properties with respect to Weyl fermions such as induction of a new region in the particle–hole continuum, increased static polarization, reduced plasmon gap, shift in absorption edge, enhanced rate of increase in energy absorption with frequency and highly suppressed intercone transitions in the long wavelength limit. The plasmon dispersion follows the usual ω ∼ ω 0 + ω 1 q 2 nature as observed in other three-dimensional systems.