Colombian renewable energy start-up E-Dina has developed a cordless light that converts salt water into electricity as a more reliable alternative to solar lamps in off-grid communities. More
Dezeen Showroom: London-based designer Arnold Chan has created a cordless light for Voltra that flickers and glows like a candle. More
Dezeen Showroom: London designer Arnold Chan has created the Alabaster lamp collection from smooth stone set in a metal base for lighting brand Voltra. More
Dezeen promotion: new lighting brand Voltra has launched a range of minimal cordless lamps, designed to "recreate the intimacy of candlelight". More
Toronto-based industrial design studio Castor has managed to induce an electric current through a 2,500-pound marble slab, causing a glow from a fluorescent tube simply laying on its top. More
Italian lighting company Artemide is the latest brand to add portable lighting to its collection with its cordless Emera and Empatia Mobile lamps. More
German designer Simon Diener has designed a portable light that is suspended using its wrap-around cord and counterweight. More
This LED pendant by Dutch designer Teresa van Dongen is powered by living organisms that require regular feeding. More
Barcelona brand Marset has released a portable lamp with a rechargeable battery that allows it to be detached and carried around the house. More
Milan 2016: Belgian architect Vincent Van Duysen has created a cast-concrete lamp as part of a range of designs for Italian brand Flos (+ slideshow). More
Milan 2016: Italian lighting design firm Nemo has reissued Le Corbusier's Borne Béton lamp, originally designed by the architect in 1952. More
Milan 2016:Â this cordless lamp generates its own electricity from bio ethanol, creating enough power to additionally charge a smartphone. More
New York-based HCWD Studio has released a white-concrete version of its cordless brick-shaped lamp, which is activated by movement rather than a switch (+ movie). More
Philippe Starck has spoken about the pros and cons of technology, saying that designers are morally obliged to use the latest materials to create more efficient products – but warned that dependence on screen-based devices is "sick" (+ transcript). More
Milan 2015: Dutch designer Maarten Baas has formed milky and coloured glass into pendant lamps that look like balloons. More
Milan 2015: advances in lighting and battery technologies mean that lighting cables could disappear within a few years, according to designer Philippe Starck and Piero Gandini, CEO of lighting brand Flos (+ slideshow). More
