Deepak Ranjan Sahoo

schoolSwansea Universitybar_chart#956 Global Rank

Total Papers

HCI Rank

#956

Research Areas

Years Active

Recent Publications

Light in Light Out (LiLo) Displays: Harvesting and Manipulating Light to Provide Novel Forms of Communication

Many of us daily encounter shadow and reflected light patterns alongside macro-level changes in ambient light levels. These are caused by elements - opaque objects, glass, mirrors, even clouds - in our environment interfacing with sunlight or artificial indoor lighting. Inspired by these phenomena, we explored ways of…

CHI '225th+ AuthorHonorable MentionContext-Aware Computing +1

Can't Touch This: Rethinking Public Technology in a COVID-19 Era

What do pedestrian crossings, ATMs, elevators and ticket machines have in common? These are just a few of the ubiquitous yet essential elements of public-space infrastructure that rely on physical buttons or touchscreens; common interactions that, until recently, were considered perfectly safe to perform. This work in…

CHI '215th+ AuthorShape-Changing Interfaces & Soft Robotic Materials +3

PV-Pix: Slum Community Co-design of Self-Powered Deformable Smart Messaging Materials

Working with emergent users in two of Mumbai’s slums, we explored the value and uses of photovoltaic (PV) self-powering digital materials. Through a series of co-design workshops, a diary study and responses by artists and craftspeople, we developed the PV-Pix concept for inter-home connections. Each PV-Pix element co…

DIS '202nd AuthorKnowledge Management & Team Awareness +1

Digital Bookmark: Seamless Switching Between Printed and Electronic Books

Recently, people prefer to read books via a combination of formats - E-Books along with printed books. We conducted a scoping survey and a lab-study which informed various inhibiting factors associated with switching between formats to conveniently use multiple formats. To improve the switching experience, we present…

CHI '203rd AuthorShape-Changing Interfaces & Soft Robotic Materials +2

PV-Tiles: Towards Closely-Coupled Photovoltaic and Digital Materials for Useful, Beautiful and Sustainable Interactive Surfaces

The interactive, digital future with its seductive vision of Internet-of-Things connected sensors, actuators and displays comes at a high cost in terms of both energy demands and the clutter it brings to the physical world. But what if such devices were made of materials that enabled them to self-power their interacti…

CHI '195th+ AuthorIntelligent Voice Assistants (Alexa, Siri, etc.) +1

StreetWise: Smart Speakers vs Human Help in Public Slum Settings

This paper explores the use of conversational speech question and answer systems in the challenging context of public spaces in slums. A major part of this work is a comparison of the source and speed of the given responses; that is, either machine-powered and instant or human-powered and delayed. We examine these dim…

CHI '195th+ AuthorShape-Changing Interfaces & Soft Robotic Materials +1

PickCells: A Physically Reconfigurable Cell-composed Touchscreen

Touchscreens are the predominant medium for interactions with digital services; however, their current fixed form factor narrows the scope for rich physical interactions by limiting interaction possibilities to a single, planar surface. In this paper we introduce the concept of PickCells, a fully re-configurable devic…

CHI '192nd AuthorVibrotactile Feedback & Skin Stimulation

Pulp Friction: Exploring the Finger Pad Periphery for Subtle Haptic Feedback

Current haptic feedback techniques on handheld devices are applied to the finger pad or the palm of the user. These state-of-the-art approaches are coarse-grained and tend to be intrusive, rather than subtle. In contrast, we present a new feedback technique that applies stimuli around the periphery of the finger pulp,…

CHI '181st AuthorVibrotactile Feedback & Skin Stimulation +2

Tangible Drops: A Visio-Tactile Display Using Actuated Liquid-Metal Droplets

We present Tangible Drops, a visio-tactile display that for the first time provides physical visualization and tactile feedback using a planar liquid interface. It presents digital information interactively by tracing dynamic patterns on horizontal flat surfaces using liquid metal drops on a programmable electrode arr…

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