UPSC Courses

DNA banner


  • 07 December, 2020

  • 3 Min Read



A team of researchers at the Indian Institute of Technology-Guwahati (IIT-G) have developed a method for harvesting water from humid air.

About the Method

  • This method involves spraying a sponge-like porous polymeric material on a normal printer paper.
  • This method can also be used in underwater hulls of ships and submarines to prevent bio-fouling; and to prevent icing on aircraft windows.
  • The method mainly uses the principle of hydrophobicity. The lotus leaves exhibit the property of hydrophobicity.
  • They used ‘Slippery liquid-infused porous surface’ (SLIPS) to effectively harvest water from foggy air.
  • The SLIPS are capable of harvesting water from air without the use of an external cooling arrangement.
  • Conventionally, the Atmospheric water generator (AWG) that extracts water from humid ambient air, uses condensation, exposing to desiccants or pressurizing water.

Atmospheric Water Generator

  • The main principle of operation is condensation.
  • Here the water vapour in the air is extracted as water by pressuring the air, cooling the air below its dew point and exposing the air to dessicants.
  • A Dessicant is a hygroscopic substance.
  • Dew Point is the point to which air should be cooled to make its saturated with water vapour. When cooled further, it will condense into liquid water (or dew).

Source: TH

What is Mission Indradhanush ?

Mission Indradhanush was launched in 2014 under the Ministry of Health and Family Welfare.  1. Between 2009 - 2013, only 1% coverage per year has increased. We have to make it to 5%. 2. Objectives of Mission Indradhanush: We have the aim of full coverage by 2020. Cover all those children who are either unvaccinated or are part

Mediation Bill 2021 - Detailed Overview

A Bill that could alter the Mediation landscape The background behind Mediation Bill:         In General, Disputes Became part and parcel of  Day-to-Day Life. Someone or the Other belonging to family or else not a part of the family would be fighting for something. These Disputes may be for Smaller or B

Military exercises of India

List of all Military Exercises of India 2021 Military Exercises of India with Neighbours Sampriti: India & Bangladesh Mitra Shakti: India & Sri Lanka Surya Kiran: India & Nepal Hand in Hand Exercise: India & China Ekuverin: India & Maldives Military Exercises of India with Other countries Maitree Exer

Consumer Protection Rules, 2021

Consumer Protection (Jurisdiction of the District Commission, the State Commission and the National Commission) Rules, 2021 1) Pecuniary Jurisdiction The Consumer Protection Act, 2019 The Consumer Protection Act, 2019 promulgates a three-tier quasi-judicial mechanism for redressal of consumer disputes namely district commissions, state

Swachh Bharat Mission (Urban) 2.0

The Swachh Bharat Mission - Urban (SBM-U), launched on 2nd October 2014 aims at making urban India free from open defecation and achieving 100% scientific management of municipal solid waste in 4,041 statutory towns in the country. The objectives of the mission are mentioned below: Elimination of open defecation Eradication of Manual S

Students Achievement

Search By Date

Newsletter Subscription
SMS Alerts