Radiotherapy In Management Research Articles

Youth Climate Questions

AbstractAnthropogenic climate change and environmental crises are pressing challenges of our time, with changes to the climate system observed in every global region. Disastrous impacts on nature, including people, have already been observed in the form of drought, floods and extreme heat events across the planet. This study examines the role of an interdisciplinary approach to exploring different responses to climate-related disasters and potential disasters. The work we report takes place in the context of recent research on dialogue on climate interventions with youth. Climate interventions are large-scale interventions into the Earth’s climate system and include proposals such as solar radiation management, ocean liming, and carbon capture and storage technologies. Research and development of climate interventions as a response to one set of disasters (in the present and in-the-making), created as a result of anthropogenic climate change, are associated with much uncertainty and controversy. We explored these uncertainties and controversies with young people, scientists and policymakers, resulting in a set of illustrated climate conversation cards. In this paper, we analyse the questions produced by young people to find requests for data and knowledge from across disciplines, and for an exploration of ethics, feelings, positions and priorities. We also found problematisations of technofixes and desire for socio-political action. The implications for science and disaster education are discussed.

Development of a novel automated algorithm for patient dosimetry in computed tomography: a step towards the facilitation of size-specific dose estimates and organs dosimetry estimations in a busy clinical workflow

Abstract Accurate dosimetry in computed tomography (CT) is essential for patient safety and effective radiation management. This study presents the development of an automated algorithm designed to enhance patient dosimetry by facilitating size-specific dose estimates (SSDE) and organ dose estimations. Utilizing a Python-based script, the proposed method integrates advanced image preprocessing, contour detection, and mathematical calculations to quantify key metrics from CT images. This automated approach addresses the limitations of manual measurement techniques. A retrospective analysis was conducted on CT axial images from examinations acquired with an 80-detector scanner. The algorithm processes DICOM images, converts pixel values to Hounsfield Units, applies Gaussian smoothing, windowing, and thresholding, followed by morphological operations to refine segmentation. It measures the water equivalent diameter (Dw) and estimates both region SSDE and organ doses, incorporating tissue attenuation. Validation was performed using an adult anthropomorphic ATOM phantom, with organ doses measured by optically stimulated luminescence dosimeters. The results demonstrated the algorithm's potential in estimating SSDE and organ doses. Validation of the automated method revealed strong correlations for Dw and SSDE between the proposed method and manual measurements of five expert reviewers ranging from 0.86 to 0.99 for determination coefficient. Comparative analysis of organ doses showed close agreement between results from experimental setup against the proposed algorithm. The automated algorithm estimated brain dose with a mean of 21.8 mGy, while measurements from the ATOM phantom and CT Expo indicated 19.74 mGy and 23.05 mGy, respectively. For lung doses, the automated algorithm estimated 12.5 mGy compared to 11.0 mGy from the ATOM phantom and 13.1 mGy from CT Expo. Liver doses were measured at 12.7 mGy by the automated method, versus 12.1 mGy from the ATOM phantom and 11.1 mGy from CT Expo. This study shows the potential of automated image analysis techniques in enhancing dosimetry accuracy in CT examinations.

Impact of Solar Radiation Management on Andean glacier-wide surface mass balance

Solar Radiation Management (SRM) is a climate intervention strategy aimed at mitigating global warming by reducing incoming solar radiation. We investigate the potential influence of SRM on Andean glacier-wide surface mass balance, as glaciers are crucial for downstream ecological functions along the west coast of South America. We numerically simulate the surface mass balance response of thousands of glaciers to SRM and other climate change scenarios throughout the 21st century. Results indicate Pan-Andean negative mass balance, irrespective of the scenario or glacier-climate regimes. However, SRM tends to modify interannual variability and temperature sensitivity in several regions. Our findings also suggest that if SRM had been implemented in the late 1980’s, it would have been effective in avoiding the negative trajectory seen today. The Andes feature nearly all mountain hydroclimatic regimes, representing a globally relevant example of SRM impacts. These findings emphasize the urgency of drastic emissions reduction.

The value of elective neck irradiation in management of esthesioneuroblastoma: a retrospective study based on propensity score matching.

This study aims to assess the clinical efficacy of elective neck irradiation (ENI) in patients with esthesineuroblastoma (ENB), a rare malignant neoplasm, who are clinically node-negative. We conducted a retrospective analysis of 178 patients newly diagnosed with ENB at our institution between 2009 and 2021. Propensity score matching (PSM) was employed to compare node-negative patients treated with and without ENI. We extensively examined survival outcomes and treatment failure. Of the 178 participants, 149 (83.7%) were lymph node-negative and staged in Modified Kadish A-C. 96 patients underwent ENI treatment, while 53 did not. At baseline, patients who received ENI differed from those who did not in terms of radiotherapy technique, staging, orbital invasion, surgical mode, and chemotherapy. After PSM, 43 pairs were available for analysis. ENI was observed to extend overall survival (OS, 5-year 73.9% vs. 84.0%; 3-year 76.9% vs. 97.1%, p = 0.022), progression-free survival (PFS, 5-year 38.5% vs. 84.6%; 3-year 50.5% vs. 94.5%, p < 0.001) and locoregional relapse-free survival (LRFS, 5-year 42.7% vs. 84.6%, p = 0.023; 3-year 57.3% vs. 94.5%, p < 0.001) in node-negative ENI patients. Failure pattern analyses revealed that ENI, which included level Ib, II, VIIa, significantly reduced the treatment failure rate. Furthermore, ENI did not significantly impact the prognosis of T1-2 patients, indicating potential clinical value of ENI in T3-4 patients. Our findings suggested that ENI decreased regional failure and significantly enhanced LRFS and PFS. ENI may be considered as an integral part of the initial treatment strategy for locally advanced node-negative ENB patients.

Lymphatic mapping in second primary or recurrent oral cavity cancer with prior neck treatment: A case series and scoping review

ObjectivesLymphatic mapping is an established technique to map drainage patterns in oral cancer. Its utility in patients who have undergone prior radiation or neck dissection is not well studied. MethodsPatients presenting to a single tertiary cancer center between 2021–2023 for a recurrent/second oral cancer that underwent lymphatic mapping were considered. All patients had a history of a head and neck cancer treated with either radiation or neck dissection. We further conducted a scoping review in MEDLINE, Embase, and Web of Science of lymphatic mapping in oral cancer patients with previous neck treatment. ResultsIn our single center review, a total of 11 patients were included. 73 % received prior radiotherapy and 55 % underwent prior neck dissections for a head and neck cancer. Lymphoscintigraphy-directed neck dissections identified sentinel nodes in 9/11 patients, with only one patient who had positive sentinel node disease. There were no reports of regional recurrence at a median of 10 months follow-up. Our scoping review of 980 studies identified 151 additional patients who underwent sentinel node biopsy for a second oral cancer after previous neck treatment. Overall, the negative predictive value of lymphatic mapping in all studies was 96.7 %. ConclusionLymphatic mapping is feasible in secondary or recurrent oral cavity cancers even in patients with prior radiation or surgical management of the neck. The literature to date demonstrates a negative predictive value of ∼ 97 % for sentinel node mapping and warrants further consideration in the management of salvage oral cancer.

Heat transfer enhancement using ternary hybrid nanofluid for cross-viscosity model with intelligent Levenberg-Marquardt neural networks approach incorporating entropy generation

Thermal heat transfer analysis of trihybrid nanofluids using an intelligent Levenberg-Marquardt neural network (ANN-LMA) approach, with a focus on entropy generation, has been conducted. The flow equations were modeled in Cartesian coordinates and simplified using dimensionless variables. Partial differential equations were converted into ordinary differential equations through appropriate similarity transformations. These ordinary differential equations were then solved using the finite element method applied to a data set evaluated from (ANN-LMA) approach. This dataset can be input into MATLAB to generate predicted solutions for flow patterns. The ANN-LMA technique was employed to evaluate the efficiency of heat transfer characteristics for nanofluids in various scenarios. Incorporating carbon nanotubes (both single-wall (SWCNT) and multi-wall (MWCNT)) along with iron oxide in water, the study demonstrates their effectiveness in enhancing heat transfer. These nanofluids have broad industrial applications, such as in coolant enhancement, cancer therapy, and solar radiation management, and show promising results. This study specifically examines the flow properties of water-based CNT cross-trihybrid nanofluids over a convectively heated surface, leveraging their unique characteristics. Improvements in heat transfer are achieved through the introduction of dissipative heat, thermal radiation, and external heat sources or sinks. The performance of the computational solver was assessed using error histograms, regression analyses, and Mean Squared Error (MSE) results. The physical significance of the designed factors is graphically depicted and discussed in detail. It was found that radiative heat increases surface heat energy through substantial accumulation, thereby enhancing heat transfer properties, while dissipative heat, due to Joule dissipation and other external sources, significantly raises the fluid temperature.

Early engagement will be necessary for atmospheric methane removal field trials

Abstract Atmospheric methane removal (AMR) refers to a suite of emerging technologies and practices that destroy atmospheric methane. There is growing interest in AMR field trials to better understand the risks and benefits of various approaches. Building on rights-based rationales from international law and core principles of environmental justice, we argue that AMR field trials should not proceed before meaningful public engagement occurs. We also draw preliminary lessons from ocean fertilization and solar radiation management (SRM) cases to highlight the significance of involving members of the public in conversation about climate intervention technologies in early stages of the research and development process. While we emphasize that engagement is not a checkbox for gaining social license, these cases illustrate how neglecting public engagement can be unnecessarily detrimental to proposed research. We further point to an enhanced weathering experiment to highlight how early engagement can foster ethical processes and outcomes, which enhance alignment of research with societal values. While empirical evidence does not yet support the argument that engagement always results in the outcomes researchers desire, it does always result in justice enhancing outcomes and should therefore be pursued regardless. We advocate for diverse engagement approaches based on the nature of the technology, with a focus on collaboration with impacted communities, the public, and international interdisciplinary researchers. To ensure responsible research practices, the article calls for the development of comprehensive governance frameworks and ethical guidelines for field trials.

Shedding the Light on Powdery Mildew: The Use of Optical Irradiation in Management of the Disease.

Ultraviolet (UV) irradiation below 300 nm may control powdery mildew in numerous crops. Depending on disease pressure, wavelength, and crop growth stage, one to three applications of 100-200 J/m2 per week at night are as effective or better than the best fungicides. Higher doses may harm the plants and reduce yields. Although red light alone or in combination with UV has a suppressive effect on powdery mildew, concomitant or subsequent exposure to blue light or UV-A strongly reduces the efficacy of UV treatments. To be effective, direct exposure of the pathogen/infection sites to UV/red light is important, but there are clear indications for the involvement of induced resistance in the host. Other pathogens and pests are susceptible to UV, but the effective dose may be phytotoxic. Although there are certain limitations, this technology is gradually becoming more used in both protected and open-field commercial production systems.

The Quality of the Air we Breathe is Getting Worse, the Dust can be Dangerous: In what way?

Based on the observation that air quality measuring devices have shown increased levels of dust pollution in recent years, we carried out an investigation over two years. This confirmed the assumption of increasing air pollution: a significant increase in the parts per million of dust particles. By analysing the filter contents of an air ionizer, we were able to find various pollutants: Arsenic, aluminum, titanium, fluorides, barium as well as mold spores. The causes can be assumed to be Geoengineering, Solar Radiation Management and Stratospheric Aerosol Injection. Air purification devices are therefore becoming increasingly important.

The current role of adjuvant radiotherapy in management of medullary thyroid carcinoma: A single institute analysis.

Medullary thyroid carcinoma (MTC) accounts for only about 5% of total thyroid cancers. It usually presents as an advanced disease carrying a poor prognosis than well-differentiated thyroid cancers. While the treatment of choice is surgery, the role of adjuvant radiotherapy is still unclear. This retrospective study aims to understand the role of adjuvant radiotherapy in MTC and its effect on survival. We did a retrospective two study to estimate the effect of adjuvant external beam radiotherapy (EBRT) on survival outcomes in MTC. A total of 30 patients who were diagnosed with nonmetastatic MTC during the period 2015 to 2020 were included in the study. Fifteen patients underwent only total thyroidectomy with cervical lymph node dissection. Rest 15 patients received adjuvant EBRT following surgery. A median dose of 60 Gy in 30 fractions, 2 Gy per fraction, 5 days per week, was given by conventional radiotherapy technique. Survival outcomes were estimated using Kaplan-Meier method. A univariate analysis using log rank test was performed to estimate the association of various prognostic factors including age, sex, tumor size, nodal involvement, and surgical resection status on survival outcomes. Median age of presentation in our study is 47 years (inter quartile range: 36-55 years). Median follow-up time is 4 years. Male to female ratio is 2:3-70% of patients presented with T3 lesions and 77% with N1b disease. There was no significant difference in overall survival (OS) in patients who received adjuvant RT following surgery in comparison to patients who underwent only surgery (92.9% vs. 71.4% P value = 0.202). Similarly, there was no improvement in locoregional recurrence-free survival (LRFS) (100% vs. 85.7%, P value-0.157), Distant metastasis-free survival (DMFS) (64.3% vs. 71.4%, P value = 0.725), and Disease-free survival (DFS) (64.3% vs. 64.3%, P value = 0.91). Age, gender, nodal involvement, and surgical resection status (R0, R1, R2) did not have any effect on survival outcomes. DFS (100% vs. 63.6% P value = 0.008), LRFS (100% vs. 94.7% P value = 0.002), and DMFS (100% vs. 63.2% P value = 0.006) were significantly better in T2 lesions compared to advanced lesions. Adjuvant EBRT failed to show any significant improvement in survival outcomes and locoregional control in MTC. Further prospective randomized clinical trials are needed to validate the role of EBRT in MTC. Clinicians should proceed with caution before advising adjuvant radiotherapy in MTC and make an informed decision after weighing the pros and cons of giving adjuvant EBRT.

Measuring solar radiation and spatio-temporal distribution in different street network direction through solar trajectories and street view images

Under the dual pressures of rapid urbanization and global warming, the management of solar radiation has become an urgent issue to address. In this context, the potential regulatory role of urban street networks on solar radiation has garnered widespread attention. However, existing research lacks an understanding of the impact of street direction. By utilising street view data and solar trajectory simulation technology, it becomes possible to facilitate the revelation of spatiotemporal differences in solar radiation across streets with different direction. The results show that solar radiation is generally lower on north–south streets than on east–west streets. In terms of spatial differences, the average solar radiation in the fifth ring of Beijing is 25.38% higher than that in the second ring. Temporally, the average solar radiation in August, the highest month, is 15.98% greater than in October, the lowest month. Additionally, solar radiation on east–west street direction shows more intense variations in summer. A periodic variation in solar radiation was also discovered in relation to street angles, with different frequencies and amplitudes at 30° and 180°. This study is the first to focus on the directional attributes of roads at an urban scale. By utilising 100,000 street view images, it calculates and analyses the spatiotemporal distribution of solar radiation in Beijing during summer across different direction. The findings provide new insights into the relationship between the distribution of solar radiation and the morphology of urban roads.

Minority groups, Indigenousness and Indigeneity, and place in social perceptions of future climate interventions

Radical climate intervention technologies such as carbon dioxide removal and solar radiation management pose difficult questions as potential remedies for destructive climate change. The effect these technologies could have on Indigenous peoples and minority groups, and those living in rural areas, could be profound and potentially calamitous. Drawing on a large-scale, cross-country set of nationally representative surveys (n = 30,284 participants, with at least 1,000 in each country) in 30 countries and 19 languages, this article examines public preferences for climate intervention technologies through the three dimensions of minority groups, Indigenousness, and place. The survey explores 10 climate intervention or geoengineering technologies: stratospheric aerosol injection, marine cloud brightening, space-based geoengineering, afforestation and reforestation, soil carbon sequestration, blue carbon and marine biomass, direct air capture with carbon storage, bioenergy with carbon capture and storage, enhanced rock weathering, and biochar. Comparing the full sample of respondents with a subsample self-identifying as ethnic minorities or Indigenous peoples, it finds this latter category of respondents has greater familiarity with these technologies than non-members, are more positive about small-scale trials and have more positive attitudes towards engineered options (versus nature-based options). Those in cities also expressed stronger support for small-scale field trials. Moreover, members of Indigenous groups or ethnic minorities expressed significantly higher levels of support for small-scale trials for nearly all technologies, were more supportive of policy incentives, and, inter alia, less supportive of policy restrictions. Conversely, non-members of Indigenous or ethnic minority groups expressed small but significantly greater support for independent national restrictions being placed on solar radiation management and engineered forms of carbon removal.

Self-adaptive energy-efficient windows with enhanced synergistic regulation of broadband infrared thermal radiation

Effective management of both near-infrared (NIR) radiation and long-wavelength infrared (LWIR) thermal emission through window design holds tremendous promise for achieving carbon neutrality in the building sector. Compared to the traditional static low emissivity (Low-E) and solar regulating windows, emerging emissivity-altering windows can better adapt to varied weather. However, dynamic windows with self-adaptive solar radiation and emissivity control have long been challenging, primarily due to the intricate broadband spectrum manipulation requiring sophisticated material design. Herein, by employing the NIR transparent hydrogen-doped In2O3 (IHO) as a function layer (ε = 0.13, TNIR = 79.8 %), we present a broadband self-adaptive radiative thermal management (SRTM) window based on Fabry-Perot resonator. Compared to the common tin-indium oxide (ITO)-based counterpart, the IHO-based SRTM window shows a 70 % enhancement in NIR power regulation ability (10.9 %) with remaining emissivity regulation ability (0.26). It contributes significantly to energy conservation offering an annual energy saving and equivalent CO2 emissions reduction of up to 20 % (411 MJ·m−2) and 244 tons/yr, compared to traditional Low-E windows globally.

Why Conceptions of Scale Matter to Artificity Arguments in SRM Ethics

ABSTRACT Ethicists have raised a variety of concerns about solar radiation management (SRM). This essay investigates the specific worries associated with artificity: Does SRM transform the planet into an artifact? Should experimental SRM strategies be implemented if the consequences are unpredictable? These worries have led some to strongly reject SRM. But the conceptual framework used by environmental scientists to understand the scope of management interventions might offer a way to adequately defuse the perceived ethical concerns about artificity. Concepts from theories of scale, like discontinuity and panarchy, are discussed to demonstrate how the artificity arguments appear to depend on disputable premises.

On the credibility of threats to avoid the deployment of solar geoengineering

AbstractWe analyze how geoengineering in the form of solar radiation management (SRM), associated with the potential of high collateral damages, affects the governance architecture of climate agreements. We investigate under which conditions signatories to a climate agreement can avoid the deployment of SRM and implement a climate agreement on mitigation. We show that a climate agreement with all countries can be stable with the threat to deploy SRM in case a country free-rides. The threat is deterrent if collateral damages are perceived to be sufficiently high (lower threshold), but only credible if those damages are not too high (upper threshold). SRM deployment is the only threat available to signatories if they choose mitigation levels simultaneously with non-signatories (Nash–Cournot scenario). However, if signatories choose mitigation levels before non-signatories (Stackelberg scenario), an additional punishment option arises. Then if collateral damages are sufficiently large, signatories can reduce their mitigation levels and impose a heavier burden on non-signatories that would find it profitable to avoid the deployment of SRM. We show that our results are robust in two analytical frameworks frequently employed in the game-theoretic analysis of international environmental agreements.

Nonlinear upconverted thermal emission through difference frequency generation.

Thermal radiation management is of critical importance in energy, sensing, and heat transfer. According to Planck's law, objects at room temperature predominantly emit thermal radiation within the mid- and far-infrared bands. Here, we demonstrated the upconversion of the mid- and far-infrared thermal radiation emitted by second-order nonlinear material to the easily-detectable visible band through a difference frequency process. This nonlinear broad-spectrum upconversion is facilitated by the random quasi-phase-matching technique in the nanoparticle system. Furthermore, we show the temperature measurement of thermal spots using such nonlinear thermal radiation. This scheme paves the way for applications in thermal management and sensing.

Dynamic Infrared Radiation Regulator Enabling Positive and Reversible Modulation of Emissivity and Temperature

AbstractThe ongoing advancements and growing adoption of infrared detection technology have spurred a tremendous amount of interest in thermal camouflage technology. Various approaches are employed to develop infrared camouflage materials capable of manipulating emissivity or surface temperature. However, the range of thermal radiation regulation implemented by these materials is still somewhat limited. In this paper, a combined emissivity and temperature regulation strategy that integrates a thermoelectric device (TED) and a thermochromic structure is proposed. By utilizing this strategy, it becomes possible to simultaneously control the surface temperature and the emissivity without needing additional complex excitation. As a concept demonstration, large tunabilities of 0.38 for long‐wave infrared (8–14 µm) emittance and 87 °C for surface temperature are observed, resulting in a prominent tunability of the thermal radiation temperature that is 15.4 °C greater than that of a conventional TED with constant emissivity. This work aims to introduce a new design paradigm for future thermal radiation management and camouflage techniques.

Meta-Analysis in Comparison between Cisplatin with Radiotherapy and Cetuximab with Radiotherapy in the Management of Locally Advanced Head and Neck Squamous Cell Carcinoma

Abstract Background Nowadays there is an increasing in the numbers of cases of head and neck squamous cell carcinoma (HNSCC) all over the world. Which affect upper aerodigestive tract including the nasopharynx, paranasal sinuses, oral cavity, oropharynx, hypopharynx and larynx. Objective To compare the using of radiotherapy (RT) with cisplatin versus cetuximab with RT in the treatment of locally advanced head and neck squamous cell carcinoma (LA-HNSCC). The comparison between these two treatment regimens will be done in terms of overall survival rate and toxicity. Patients and Methods We performed this systematic review and meta-analysis in accordance to the recommendations of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement and Meta-analysis Of Observational Studies in Epidemiology (MOOSE) statement. PRISMA and MOOSE are reporting checklists for Authors, Editors, and Reviewers of Meta-analyses of interventional and observational studies. According to International committee of medical journal association (ICJME), reviewers must report their findings according to each of the items listed in those checklists. Results cetuximab with RT is associated with lower overall survival compared to cisplatin with RT in management of locally advanced head and neck squamous cell carcinoma, also patient treated with cetuximab were associated with higher rates of mortality compared to those treated with cisplatin Data Sources Medline databases (PubMed, Medscape, ScienceDirect. EMF-Portal) and all materials available in the Internet till 2020. Conclusion According to our study in the comparison between cisplatin with RT versus cetuximab with RT, cetuximab with RT is associated with lower overall survival compared to cisplatin with RT in management of locally advanced head and neck squamous cell carcinoma, also patient treated with cetuximab were associated with higher rates of mortality compared to those treated with cisplatin

Design of interconnected graphene loaded thermoplastic elastomeric blend composite films for minimizing electromagnetic radiation and efficient heat management

AbstractIn this work, electrically conductive thermoplastic elastomeric blend composite films based on polystyrene (PS)/ethylene‐co‐methyl acrylate (EMA) filled with functionalized graphene were developed via the solution mixing technique. Morphological analysis revealed that selective localization of amine‐functionalized reduced graphene oxide (G‐ODA) sheets in the EMA phase of co‐continuous binary blend formed a well‐connected dense conductive pathway by graphene sheets ultimately facilitating the double percolation phenomenon. The electrical percolation threshold was achieved at ~2 wt% of G‐ODA loading which was much lower than that for both single polymer composites. An electrical conductivity of 0.9 S/cm was obtained for blend composite film with 10 wt% of graphene concentration whereas for the same filler loading, PS and EMA composites exhibited electrical conductivity of 1.9 × 10−1 and 2.3 × 10−1 S/cm, respectively. The obtained thermal conductivity of the blend composite with 10 wt% of G‐ODA loading was 0.95 W/m K with 400% enhancement compared to the neat blend system. The same composite exhibited increased real and imaginary permittivity of 92 and 83, respectively. The electrical percolation threshold is well‐correlated with the percolation concentration found from storage modulus and thermal conductivity data. The fabricated PS/EMA blend composite film exhibited absorption‐dominant electromagnetic interference SE of −25 and − 35 dB in X‐band frequency (8.2–12.4 GHz) for 10 wt% of graphene loading with a sample thickness of 0.5 and 1 mm, respectively.

Adaptive infrared radiation modulator using reversible metal electrodeposition with silicon carbide-based fabry-perot cavity

Conventional materials that statically modulate radiation in the infrared (IR) region of the electromagnetic spectrum underpin the performance of many entrenched technologies. The development of their adaptive variants, whereby the IR radiation properties dynamically change as a response to external stimuli, has emerged as an important unfulfilled scientific challenge. Here, by combining the silicon carbide (SiC)-based Fabry-Perot (FP) cavity effect with the traditional reversible metal electrodeposition device (RMED), where the FP cavity is used as a color filter to emit a particular wavelength and the RMED is used to reversibly modulate IR radiation, we develop an adaptive IR radiation modulator with large and uniform IR emissivity tunability (Δε ≥ 0.579) in the 3–14 µm region. A specific structural color which is a function of the SiC thickness can be simultaneously displayed when the modulator is in the low-emissivity mode. By varying the SiC thickness from 100 to 180 nm, a full gamut of colors spanning the entire visible spectrum can be achieved. Additionally, the modulator can exhibit fantastic patterns consisting of different structural colors with simple designs achieved. We believe that our findings may open opportunities for camouflage in multispectral detection and many technologies related to IR radiation management.