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GS Paper: GS3-16.Achievements of Indians in Science & Technology

  • FDA Approves World’s First Chikungunya Vaccine: Ixchiq

    Central Idea

    • The Food and Drug Administration (FDA) in the US granted approval for the world’s inaugural vaccine against chikungunya.

    Ixchiq: The Chikungunya Vaccine

    • Developed by European vaccine manufacturer Valneva, this vaccine will be available under the brand name Ixchiq.
    • It has been authorized for use in individuals aged 18 and above who are at elevated risk of chikungunya exposure.
    • It is administered as a single dose via injection into the muscle.
    • The vaccine contains a live, attenuated (weakened) form of the chikungunya virus. It may induce symptoms similar to those experienced by individuals with the disease.

    Understanding Chikungunya

    • Symptoms: Chikungunya is characterized by severe joint pain, limited mobility, and accompanying fever. It is a viral infection (CHIKV) primarily transmitted by Aedes aegypti and Aedes albopictus mosquitoes, earning it the status of an “emerging global health threat.”
    • Global Prevalence: Chikungunya is prevalent in Africa, Asia, and the Americas, with sporadic outbreaks reported in other regions. Since 2004, outbreaks have become more frequent and widespread, partly due to viral adaptations facilitating transmission by Aedes albopictus mosquitoes.
    • Symptoms: Alongside joint pain, chikungunya symptoms include joint swelling, muscle pain, headache, nausea, fatigue, and rash. While severe cases and deaths are rare, they may be underreported due to misdiagnosis, often confused with dengue or zika.
    • No Cure: Currently, there is no cure for chikungunya, and treatment is primarily focused on symptomatic relief, including analgesics for pain, antipyretics for fever, rest, and adequate fluid intake.
    • Prevention: Prevention efforts primarily revolve around mosquito control through public health initiatives, civic maintenance, and personal measures such as using medicated mosquito nets and eliminating stagnant water sources to hinder mosquito breeding.

  • Amal Kumar Raychaudhuri and the Raychaudhuri Equation

    Raychaudhuri

    Central Idea

    • Amal Kumar Raychaudhuri, an Indian physicist, overcame obstacles and restrictions to make a profound contribution to the field of general relativity.

    A.K. Raychaudhuri: Early Life  

    • Born in Barisal, now in Bangladesh, in 1923.
    • Educated in Kolkata.
    • Developed a deep interest in general relativity during his time at the Indian Association of Cultivation of Science (IACS).

    Challenges Faced

    • While passionate about general relativity, Raychaudhuri was instructed by the director of IACS, Meghnad Saha, to work on topics of the director’s choosing or leave.
    • Raychaudhuri, with limited career options, complied with Saha’s directive but continued to explore the mysteries of gravity in his spare time.

    Theoretical Breakthrough: The Raychaudhuri Equation

    • Raychaudhuri focused on the problem of singularities in general relativity, specifically points where gravity could become infinitely strong.
    • Developed a unique approach that bypassed complex mathematical challenges.
    • Introduced the Raychaudhuri equation, a simple and elegant formula that showed the inevitable convergence of matter in curved spacetime.
    • The equation hinted strongly at the existence of singularities, a critical aspect of general relativity.

    Influence on Renowned Physicists

    • Raychaudhuri’s equation played a pivotal role in the work of Stephen Hawking and Roger Penrose.
    • Hawking’s area theorem, demonstrating that the surface area of black holes never decreases, relied on the Raychaudhuri equation.

    Recognition and Legacy

    • Despite his groundbreaking work, Raychaudhuri received limited recognition in India.
    • He faced obstacles in career advancement, including rejection by Calcutta University.
    • Raychaudhuri eventually joined Presidency College, Kolkata, where he became a revered teacher, inspiring future generations of physicists.

  • NASA-ISRO NISAR Mission Prepares for Launch

    nisar

    Central Idea

    • The NASA-ISRO Synthetic Aperture Radar (NISAR) mission, a collaborative effort between NASA and ISRO, is on track for its scheduled launch in the first quarter of 2024.

    About the NISAR Mission

    • Collaboration: NISAR is a Low Earth Orbit observatory developed jointly by NASA and ISRO, highlighting international collaboration in space exploration.
    • Launch Vehicle: The mission is set to launch from the Satish Dhawan Space Centre in Sriharikota onboard ISRO’s GSLV Mark-II launch vehicle.
    • Data Utility: NISAR data will offer unprecedented detail and assist researchers in various ways, including monitoring volcanic activity, tracking groundwater use effects, measuring ice sheet melt rates, and observing changes in global vegetation distribution.
    • Mission Duration: The $1.5-billion NISAR mission has a planned mission life of three years and will survey Earth’s land and ice-covered surfaces every 12 days following a 90-day commissioning period.

    Advanced SAR Technology

    • Dual-Band SAR: NISAR carries L and S dual-band Synthetic Aperture Radar (SAR) using the Sweep SAR technique, providing both wide coverage and high-resolution data.
    • Observatory Structure: The SAR payloads are mounted on the Integrated Radar Instrument Structure (IRIS) along with the spacecraft bus, forming an observatory.
    • Contributions: NASA’s Jet Propulsion Laboratory (JPL) provides the L-band SAR and several key components, while ISRO’s U R Rao Satellite Centre contributes the spacecraft bus, S-band SAR electronics, launch vehicle, and mission operations.

    Key milestones achieved

    • Thermal Vacuum Testing: The thermal vacuum testing, a critical system-level test, was successfully completed in Bengaluru. This test ensures that the spacecraft can operate effectively under extreme temperature conditions.
    • EMI and EMC Testing: Electromagnetic interference (EMI) and electromagnetic compatibility (EMC) testing have also been successfully accomplished.
    • Upcoming Vibration Tests: The next phase involves conducting vibration tests to simulate the harsh launch environment. This test will subject the satellite to intense vibrations while mimicking the conditions of a rocket launch.

  • How does an Electric Battery work?

    battery

    Central Idea

    • Electric batteries have become an integral part of modern life, enabling the widespread use of motorization and wireless technology.
    • These devices store and release electrical energy, acquired by converting other forms of energy, primarily through chemical reactions.

    Historical Roots of Electric Batteries

    • Galvani’s Experiment: In 1780, Luigi Galvani conducted an experiment involving two metal plates and a frog’s leg, marking an early exploration of electricity’s effects on biological systems.
    • Volta’s Voltaic Pile: Alessandro Volta’s voltaic pile in 1800 consisted of alternating copper and zinc plates separated by electrolyte-soaked paper. It produced a steady current but lacked a comprehensive explanation.
    • John Daniel’s Innovation: British chemist John Daniel improved on Volta’s design with a more efficient cell that generated electric current for extended periods.
    • Faraday’s Insights: In the early 19th century, Michael Faraday elucidated the principles of electrochemical cells, including naming components like anode, cathode, and electrolyte.

    Understanding Electric Batteries

    • Voltaic Cells: Electric batteries, also known as voltaic or galvanic cells, utilize redox reactions to produce an electric current. They consist of two half-cells, each with a metal electrode immersed in an electrolyte of the same metal.
    • Electron Transfer: In one half-cell, metal ions dissolve into the electrolyte, releasing electrons. In the other half-cell, the reverse occurs, as metal ions deposit onto the electrode and require electrons.
    • External Circuit: A wire connects the two electrodes, allowing electron flow from the anode to the cathode. A salt bridge connects the two electrolytes, enabling ion exchange.
    • Components: Key components include the cathode (positive electrode), anode (negative electrode), and the electrolyte. The source voltage and terminal voltage are important concepts.
    • Source Voltage: It represents the energy imparted to electrons and is equal to the terminal voltage in ideal conditions.
    • Issues: Corrosion is a common issue in electrochemical cells, caused by factors like moisture and galvanic corrosion.

    Types of Batteries

    • Lithium-Ion (Li-ion) Batteries: Li-ion batteries are rechargeable and have revolutionized technology. They consist of a cathode, anode, and an electrolyte. During discharge, lithium ions move between electrodes, facilitating energy storage.
    • Electric Vehicle (EV) Batteries: EV batteries, such as those used in Tesla’s Model S, are composed of numerous Li-ion cells and are critical for powering electric vehicles.
    • Hydrogen Fuel Cells: Hydrogen fuel cells are gaining interest, especially in the context of green energy. They use hydrogen as a fuel source and produce electricity through a chemical reaction with oxygen, emitting water as a byproduct.

    Future Prospects and Significance

    • Ongoing Research: Li-ion batteries and hydrogen fuel cells continue to be areas of extensive research, with diverse configurations and advantages.
    • Hydrogen Economy: Hydrogen fuel cells are expected to play a pivotal role in the emerging hydrogen economy, and countries like India are investing in green hydrogen production.

    Conclusion

    • Electric batteries, rooted in the principles of electrochemistry, have undergone significant evolution, transforming the way we live and utilize energy.
    • Their development and improvement remain central to advancing convenience and sustainability in industrialized societies, shaping the future of technology and transportation.

  • Norwegian perspective of India’s digital journey

    Central idea

    India’s digital journey, marked by Digital Public Infrastructure (DPI), exemplifies a commitment to inclusivity. The article underscores global collaboration, with MOSIP impacting millions, and highlights Norway’s role, advocating for the 50-in-5 campaign. It emphasizes the balance between openness and security in navigating the digital domain.

    Key Highlights:

    • DPI Transforming India: Digital Public Infrastructure (DPI) has transformed India, providing digital identities and access to services for its vast population.
    • Global Recognition and Frameworks: India’s G-20 presidency gained global recognition for DPI, setting frameworks for digital public goods and highlighting its development benefits.
    • Digital Inclusion Success Stories: MOSIP, developed in Bengaluru, serves as a global blueprint, benefiting over 97 million citizens in diverse countries, showcasing achievements in digital inclusion.
    • Comprehensive Development Framework: DPI is a comprehensive framework aligning with Sustainable Development Goals (SDGs), emphasizing development, inclusion, innovation, trust, and global competition.

    Challenges:

    • South-South Cooperation Dynamics: The article explores the dynamics of South-South cooperation, especially in the context of MOSIP, showcasing organic global organization.
    • Financial Considerations and Privacy: Financial challenges in developing digital protocols and concerns about data privacy are highlighted as critical challenges for the future.
    • Safeguarding Digital Sovereignty: Governments and businesses must navigate challenges, ensuring digital sovereignty without compromising an open, free, and secure Internet.
    • Balancing Openness and Security: Balancing openness and security is crucial, emphasizing the importance of DPGA’s compass in certifying and pooling digital public goods.

    Key Phrases:

    • “Leaving no one behind” – Emphasizes the commitment to inclusivity and the challenge in achieving the Sustainable Development Goals (SDGs).
    • “Digital Public Infrastructure (DPI)” – Highlights the transformative role of DPI in providing digital identities and access to services.
    • “South-South cooperation” – Signifies the collaborative efforts among countries in the global South, exemplified by MOSIP’s impact.
    • “Global development architecture” – Describes the role of digital public goods in shaping international development frameworks.

    Analysis:

    • Global Recognition of DPI: The article analyzes India’s G-20 presidency and its impact on recognizing DPI as part of the international development architecture.
    • Challenges in Digital Domain: The challenges of financial considerations, data privacy, and safeguarding digital sovereignty are critically examined.
    • Norway’s Digital Contributions: The analysis delves into Norway’s contributions to the digital domain, showcasing its commitment to the 50-in-5 campaign.
    • Balancing Openness and Security: The article emphasizes the need to balance openness and security, considering the complexities of the digital domain.

    Key Data:

    • MOSIP’s Global Reach: Over 97 million people in various countries, including Morocco, Togo, Sri Lanka, and the Philippines, have received IDs through MOSIP.
    • Norwegian Digital Goods: Examples include weather services (Yr), health information systems (DHIS2), and contributions targeting SDG2 on ending food hunger.
    • 50-in-5 Campaign: Norway pledges to make at least one national digital good available globally in the next five years as part of the 50-in-5 campaign.
    • Digital Public Goods Alliance (DPGA): The article highlights the DPGA’s role as a registry of certified digital public goods, shaping the global digital landscape.

    Key Facts:

    • Digital Inclusion in India: DPI has played a pivotal role in providing digital identities to almost all of India’s 1.4 billion citizens.
    • G-20 Framework for DPI: India’s achievement in getting all G-20 countries to agree to the G-20 Framework for Systems of Digital Public Infrastructure is emphasized.
    • Norway’s Role in DPGA: Norway is a co-founder and member of the DPGA, contributing to the certification and pooling of digital public goods.
    • Digital Goods Addressing Global Challenges: Digital goods like VIPS and DHIS2 contribute to addressing global challenges such as food insecurity and health management.

    Key Terms for enriching answer quality:

    • Digital Public Infrastructure (DPI)
    • South-South Cooperation
    • MOSIP (Modular Open Source Identity Platform)
    • G-20 Framework for Systems of Digital Public Infrastructure
    • 50-in-5 Campaign
    • Digital Public Goods Alliance (DPGA)
    • Sustainable Development Goals (SDGs)

    The Way Forward:

    • Collaborative Frameworks with India: Encouraging closer collaboration with India within DPGA frameworks is seen as a positive step for advancing global digital initiatives.
    • Learning from India’s Digital Journey: Leveraging lessons from India’s digital journey is crucial for inclusive global development, offering insights into effective transformation strategies.
    • Balancing Sovereignty and Collaboration: Collaborating with India within the DPGA framework requires a delicate balance, ensuring digital sovereignty while fostering successful global digital initiatives.
    • Certification and Pooling for Global Good: Certification and pooling of digital public goods under DPGA’s global leadership provide a compass for future collaborations, emphasizing global cooperation for mutual benefit.

  • India’s Deep Ocean Mission: A Journey into the Abyss

    matsya

    Central Idea

    • India’s Deep Ocean Mission (DOM) is a visionary initiative aimed at exploring and harnessing the immense potential of the ocean’s depths.
    • Among its groundbreaking objectives, DOM will deploy an indigenous submersible with a three-member crew to reach a depth of 6,000 meters in the ocean, marking India’s first foray into the profound oceanic abyss.

    Deep Ocean Mission Overview

    • Mission Pillars: DOM, principally led by the Ministry of Earth Sciences (MoES), encompasses six pillars:
      1. Development of deep-sea mining technologies and a crewed submersible for exploring depths of 6,000 meters.
      2. Ocean climate change advisory services, involving extensive ocean observations and modeling.
      3. Technological innovations for deep-sea biodiversity exploration and conservation.
      4. Deep-ocean survey to identify potential sites of multi-metal hydrothermal sulphides mineralization.
      5. Harnessing energy and freshwater resources from the ocean.
      6. Establishment of an advanced Marine Station for Ocean Biology.
    • Strategic Significance: DOM aligns with the ‘New India 2030′ vision, focusing on a blue economy as a core objective for India’s growth. It is part of the United Nations’ ‘Decade of Ocean Science’ (2021-2030) and complements Prime Minister Narendra Modi’s emphasis on sustainably utilizing the ocean’s potential for national development.
    • Collaborative Efforts: Multiple MoES institutes, including the Centre for Marine Living Resources and Ecology (CMLRE), Indian National Centre for Ocean Information Services (INCOIS), National Centre for Coastal Research (NCCR), National Centre for Polar and Ocean Research (NCPOR), and National Institute of Ocean Technology (NIOT), collaborate with national institutes and academia to achieve DOM’s objectives.

    Progress on Pillar 1: Deep-Sea Mining Technologies and Crewed Submersible:

    • ‘Samudrayaan’ Initiative: India’s deep ocean mission, ‘Samudrayaan,’ was launched in 2021 under the leadership of MoES. It aims to reach a depth of 6,000 meters in the central Indian Ocean using the ‘Matsya6000’ submersible, accommodating a crew of three members.
    • Submersible Features: Matsya6000 is equipped with scientific sensors, tools, and an operational endurance of 12 hours (extendable to 96 hours in emergencies). The submersible’s design is complete, with testing and experimentation at a depth of 500 meters scheduled in the upcoming year.
    • Mining System: NIOT is developing an integrated system for mining polymetallic nodules from the central Indian Ocean bed. This mineral-rich region, allocated by the United Nations International Seabed Authority (ISA), includes copper, manganese, nickel, and cobalt.
    • Successful Trials: NIOT conducted deep-sea locomotion trials with the ‘Varaha’ underwater mining system at a depth of 5,270 meters in the central Indian Ocean. Varaha collected polymetallic nodules during the trial, marking a significant milestone.
    • Challenges: Deep-sea exploration faces immense challenges, including high pressure, soft and muddy ocean bed surfaces, power supply constraints, visibility limitations, temperature variations, and corrosion. NIOT and MoES are committed to addressing these complexities.

    Significance of the Chosen Depth (6,000 meters)

    • Strategic Depth: Targeting a depth of 6,000 meters serves a strategic purpose. India aims to sustainably extract valuable resources such as polymetallic nodules and sulphides, with ISA allocating regions in the central Indian Ocean for exploration.
    • Resource Distribution: Polymetallic nodules, rich in metals like copper, manganese, nickel, iron, and cobalt, are found around 5,000 meters deep. Polymetallic sulphides occur at approximately 3,000 meters. By operating at 6,000 meters, India can effectively cover depths of 3,000 to 5,500 meters, spanning its Exclusive Economic Zone and the central Indian Ocean.

    Challenges in Deep-Ocean Exploration

    • High Pressure: Exploring the deep oceans involves extreme pressure conditions, with water exerting tremendous force. Equipment must be meticulously designed to withstand these conditions.
    • Soft Ocean Bed: The soft and muddy ocean bed complicates landing and maneuvering for heavy vehicles.
    • Material Durability: Electronics and instruments must endure underwater conditions, unlike space where objects are designed to function in a vacuum.
    • Extraction Challenges: Extracting materials from the ocean bed necessitates significant power and energy, with the need to transport extracted minerals to the surface.
    • Visibility Constraints: Limited natural light penetration in deep waters poses visibility challenges.

    Matsya-6000 and Varaha: A Vision for India’s Ocean Exploration

    • Matsya6000: India’s flagship deep-ocean submersible combines features of remotely operated vehicles (ROVs) and autonomous remote vehicles (AUVs). It accommodates a crew of three, is constructed from titanium alloy, and is designed to withstand high pressures.
    • Varaha: Varaha is India’s deep-ocean mining system, operating on the flexible riser technique. It successfully conducted deep-sea locomotion trials at a depth of 5,270 meters, marking a world record.
    • Unique Ecosystem: India is poised to possess a comprehensive underwater vehicle ecosystem, encompassing deep-water ROVs, polar ROVs, AUVs, deep-water coring systems, and more.

    Conclusion

    • India’s Deep Ocean Mission is a pioneering endeavour to explore and harness the potential of the ocean’s depths.
    • With Matsya6000 and Varaha, India is poised to join the selective nations conducting deep-ocean exploration and mining.

  • Lessons in how to build an innovation ecosystem

    Central idea

    India’s innovation journey, seen in Global Innovation Index (GII) progress and Amul’s community success, faces challenges in maintaining Atal Tinkering Labs (ATLs). Collaborative clusters like ATL Sarthi highlight the need for a community-driven shift. The way forward involves community ownership, dialogue, and resource provision for continued success in innovation.

    Key Facts:

    • ATL Sarthi Impact: Over 90% of schools in clusters demonstrating high attendance and performance.
    • Green and White Revolutions: Past successes serving as inspiration for future triumphs.
    • ATL Utilization: Challenge of uniform and effective utilization addressed in the ATL Sarthi experiment.
    • Government Vision: Push towards liberating innovation and entrepreneurship from complex processes.

    Key Terms:

    • GII: Global Innovation Index, measuring a nation’s innovation capabilities.
    • ATL: Atal Tinkering Labs, fostering innovation in middle and high schools.
    • ATL Sarthi: Clusters of ATLs overseen by a guidance committee for efficiency.
    • Neoteric Innovators: Term defining students keeping pace with rapidly changing technology.

    Key highlights of India’s innovation landscape

    • GII Leap: From 81 to 40 India’s substantial improvement in the Global Innovation Index showcases a dedicated commitment to fostering innovation.
    • Community-Driven Success Lessons from Amul: Examining the cooperative model of Amul as a testament to the power of community-driven initiatives in achieving global milestones.
    • ATLs Nurturing the Next Generation Innovators : Understanding the role of Atal Tinkering Labs (ATLs) in cultivating a million “neoteric innovators” among middle and high school students.
    • Government’s Vision of Liberating Innovation and Entrepreneurship: Analyzing the impact of the government’s push towards liberating innovation and entrepreneurship from complex processes.

    Key Data:

    • GII Progress: India’s notable rise from 81 to 40 in the Global Innovation Index.
    • ATL Impact: Over 10,000 Atal Tinkering Labs (ATLs) engaging more than 75 lakh students.
    • Rural Emphasis: 60% of ATLs strategically located in rural areas.
    • ATL Sarthi Clusters: Implementation in states like Karnataka, Andhra Pradesh, and Jammu and Kashmir.

    Challenges in Innovation Infrastructure

    • Infrastructure Expansion: The challenge of efficiently expanding and maintaining the infrastructure of Atal Tinkering Labs (ATLs).
    • Rural-Urban Disparities: The disparities in ATL infrastructure between urban and rural areas, with 60% of ATLs located in remote regions.
    • Ensuring Effective Use of ATLs: The challenge of uniform and effective utilization of ATLs, particularly in schools facing economic and geographical constraints.
    • Innovation Hubs: The ATL Sarthi experiment, exploring the creation of clusters overseen by a guidance committee to enhance ATL efficiency.

    Way Forward

    • Unlocking Maximum Potential: Emphasizing the timeless lesson that community ownership is essential to unlock the maximum potential of government-led initiatives.
    • Green and White Revolutions Redux: Drawing parallels with past successes like the Green and White Revolutions, envisioning a similar triumph in the age of innovations.
    • Fostering Dialogue: Advocating for the importance of fostering dialogue between government bodies, schools, and communities for sustained success.
    • Resources and Support: Exploring the need for providing resources and support to communities, ensuring their active participation in the innovation ecosystem.

  • NexCAR19: India’s own CAR-T Cell Therapy

    car-t cart cell therapy

    Central Idea

    • India has achieved a significant milestone in the field of cancer treatment with the approval of NexCAR19, its first indigenous CAR-T Cell Therapy, by the Central Drugs Standard Control Organisation (CDSCO).
    • Developed by ImmunoACT, an incubated company of IIT Bombay, NexCAR19 is set to transform cancer treatment in India and make it more affordable.

    What is CAR-T Cell Therapy?

    • Revolutionary Approach: CAR-T cell therapy involves modifying T-cells, a type of white blood cell, into potent cancer-fighting cells.
    • Targeting Cancer: These genetically enhanced cells are reintroduced into the patient’s body, where they identify and eliminate cancer cells, particularly effective against blood cancers like leukemia and lymphomas.
    • Game-Changer: Unlike chemotherapy or immunotherapy, CAR-T therapy offers the potential for a cure and lifelong benefits, making it a transformative treatment option.

    NexCAR19: India’s Indigenously Developed CAR-T Therapy

    • NexCAR19 is designed to target cancer cells carrying the CD19 protein, a marker on cancer cells, enhancing precision in treatment.
    • India joins a select group of nations with its own CAR-T and gene therapy platform, reducing dependence on imports.
    • Initially approved for patients aged 15 and above with B-cell lymphomas who did not respond to standard treatments, leading to relapse or recurrence.

    Effectiveness and Unique Features

    • Approximately 70% of patients respond to NexCAR19 treatment, with some achieving complete remission.
    • Lab and animal studies indicate lower drug-related toxicities, including reduced neurotoxicity and Cytokine Release Syndrome (CRS).
    • Trials for paediatric patients are underway at Tata Memorial Hospital, ensuring broader applicability.

    Availability and Affordability

    • ImmunoACT is in the process of securing licenses and partnering with hospitals, including Tata Memorial, Nanavati, Fortis, and Jaslok, across multiple cities.
    • CAR-T therapy is expected to be available in a matter of weeks to a few months, pending final government approvals.
    • Initially priced at Rs 30-40 lakh, ImmunoACT aims to eventually reduce the cost to Rs 10-20 lakh, making the therapy more accessible.
    • Approval by regulatory agencies like CDSCO should lead to insurance coverage, but the extent may vary, and discussions with insurers and the government are ongoing.

  • IIT-B pioneers Nanostructured Hard-Carbon Florets (NCF)

    Nanostructured Hard-Carbon Florets (NCF)

    Central Idea

    • Scientists at IIT Bombay have achieved a groundbreaking development by creating a material known as Nanostructured Hard-Carbon Florets (NCF).
    • This innovative material boasts an unparalleled solar-thermal conversion efficiency, surpassing 87%.

    What is Nanostructured Hard-Carbon Florets (NCF)?

    • NCF Development: It is a material capable of absorbing and storing an exceptional amount of heat energy.
    • Stunning Efficiency: It exhibits an extraordinary solar-thermal conversion efficiency of over 87%, absorbing more than 97% of sunlight’s ultraviolet, visible, and infrared components.
    • NCF Manufacturing: The material is manufactured through chemical vapor deposition, making it easily scalable and suitable for large-scale production.

    Science behind NCF’s Efficiency

    • NCF’s success lies in its unique structure, resembling interconnected carbon cones.
    • This structure combines high photon thermalization (efficiently converting light into heat) with low phonon thermal conductivity (retaining heat without loss).

    Applications of NCF

    • Wide Range: NCF can be applied to diverse surfaces, including paper, elastomer, metal, and terracotta clay, making it adaptable for various contexts.
    • Versatility: The generated heat can be efficiently transferred to air or water, making NCF ideal for smoke-free space heating, particularly beneficial in cold regions like Leh and Ladakh.
    • Eco-Friendly and Cost-Effective: Unlike conventional coatings based on heavy metals like chromium (Cr) or nickel (Ni), NCF coatings do not harm the environment

    Beyond Solar Thermal Conversion

    • Heating Rooms and Spaces: Hollow copper tubes coated with NCF can heat air to over 72 degrees Celsius, demonstrating potential applications in space heating.
    • Efficient Water Vapor Conversion: NCFs have achieved an astonishing water vapor conversion efficiency of 186%, surpassing commercial solar stills.
    • Sustainable Energy Solution: This groundbreaking technology provides a green solution to the global energy crisis, supporting the transition to sustainable energy sources.
    • Commercialization and Recognition: The project is on the path to commercialization through the establishment of a company at IIT Bombay’s Society for Innovation and Entrepreneurship. It has received accolades and support, highlighting its potential to revolutionize the solar-thermal energy market in India and contribute to decarbonization.

  • Gaganyaan: Flight Test Vehicle Abort Mission-1

    vehicle

    Central Idea

    • ISRO detailed about Gaganyaan mission’s Test Vehicle-Demonstration 1 (TV-D1) Mission which is scheduled for tomorrow.
    • TV-D1 will demonstrate the performance of the crew escape system.

    Flight Test Vehicle Abort Mission

    • Objective: The mission involves launching a rocket to an altitude of approximately 17 km, followed by a simulated abort signal, resulting in the separation of the crew module.
    • Safety Test: The crew module will descend safely using a parachute, ultimately splashing down in the Bay of Bengal.
    • Duration: This comprehensive test mission is scheduled to last 532 seconds, from liftoff at 8 am to the crew module’s splashdown, situated about 10 km from the Sriharikota coast.
    • Empty Module: It’s important to note that the crew module will remain uncrewed during this test.

    What will be tested?

    • New Test Vehicle: This mission introduces the new Test Vehicle, aptly named Test Vehicle-Demonstration 1 (TV-D1), and designed specifically for testing systems and procedures.
    • Crew Module Functionality: A basic version of the crew module, the capsule in which astronauts will eventually journey into space, will be tested for functions such as mid-flight emergency crew module separation and astronaut escape.
    • Technical Terminology: ISRO’s technical definition of the mission is “In-flight Abort Demonstration of Crew Escape System (CES),” which simulates abort conditions during ascent corresponding to a Mach number of 1.2, a critical aspect of the Gaganyaan mission.

    About the New Test Vehicle

    • Cost-Effective Testing: The TV-D1 mission employs a low-cost Test Vehicle, optimized for system testing, instead of the more expensive GSLV Mk III rocket used in previous tests.
    • Innovations: It uses existing liquid propulsion technology but includes innovations such as the throttleable and restartable L110 Vikas engine.

    Key Feature: Crew Escape System

    • Safety Precedence: The TV-D1 mission underscores ISRO’s unwavering commitment to astronaut safety, particularly in emergencies.
    • Environmental Control Systems: ISRO is actively developing environmental control and life support systems for the crew module.
    • Integrated Vehicle Health Management: The program includes an integrated system to monitor the vehicle’s health and initiate mission-abort procedures when necessary.
    • Testing Milestones: Some of these systems were previously assessed in the Crew module Atmospheric Re-Entry Experiment (CARE) and the Pad Abort Test-PAT in 2018.

    Stages of TV-D1 Mission

    • Critical Phases: The mission involves key stages, including the separation of the Crew Escape System from the Test Vehicle and the subsequent separation of the crew module.
    • Parachute Deployment: Parachutes will be deployed for a safe descent over approximately seven minutes.
    • Navy’s Involvement: The Indian Navy will play a crucial role in recovering the crew module from the Bay of Bengal.
    • Milestone Setting: The TV-D1 mission serves as a significant milestone, marking the integration of a near-complete system for flight testing.

    Status of Preparations

    • Unmanned Mission: An unmanned mission is scheduled for early next year, followed by abort missions, with the manned mission targeted for late 2024 or early 2025.
    • Technical Readiness: The human-rated LVM 3 rocket has successfully undergone testing, and essential components such as solid rocket boosters and liquid propellant engines are ready.
    • Training: Four astronauts from the Indian Air Force have undergone training in Russia and will receive further training to prepare for the final mission.

    Conclusion

    • ISRO’s relentless pursuit of space exploration reaches a pivotal juncture with the TV-D1 mission.
    • As India inches closer to sending its astronauts into space, these planned tests and safety measures underscore ISRO’s commitment to ensuring a safe and successful Gaganyaan mission.